Fuel injection pump calibration procedure

5 PSI. 1. Each injectors flow rate information, or injection quantity adjustment flow rate numbers, and cylinder position are stored in the memory of the ECM. ‪. Fill the calibration cylinder with the product that the pump is feeding. operate slightly differently. 11. It does not pay any attention to, or require any other component, including the electric lift pump, in the VP44 fuel system to only start and idle. The PCM with or without the injection pump has been replaced. 18. Slide spacer (6) into the locked position. stanadyne. Complete the sketch below to show the position of the valves and show the diaphra. Setups can range from simple single-nozzle systems costing a few hundred dollars through to systems costing tens of thousands of dollars. The high velocity oil jet can penetrate the skin and cause blood poisoning. The correct setting and adjustment of fuel injection pumps requires standardized testing conditions. by the injection. Place the infusion pump in the same position used in actual treatment, take note of the flow rate shown on Nov 7, 2023 · November 7, 2023 by TechieScience Core SME. 3 Prior to testing. A fuel injection pump typically operates based on the rotational motion of a camshaft, which is driven by the engine. It is typically connected to the fuel lines and engine components. Family Owned & Operated Since 1948. The instructions in Publication M-0 are thorough but convoluted, requiring reference to sub-steps and data in different sections of the document as you advance through the procedure. o. Mount the fuel injector in its test rig and connect up the oil supply. For a indirect-injection, the engine has an auxiliary injection combustion chamber where the fuel is mixed with air. Page 52 92 Deerfield Road Windsor, CT 06095, U. In Tuner Studio, tools->Calibrate AFR Table->EGO Sensor select “Custom Linear WB”, enter the values shown in the picture below and write changes to MegaSquirt. We recommend having this installation performed by an uct involving fuel system parts or gas tank modificaitons. Output power: 7. ure fuel system without allowing the fuel system to purge. Fuel efficient kit 11. Aligning and installing the fuel injection pump onto the front housing. After the engine has. Fuel Injection Pump Testing. The following step by step adjustment and flight testing procedures should be followed: I Ground Adjustment 1. Restart the engine and let it idle for at least 5 seconds. NOTE: If the fuel injection pump housing is installed on the engine a 146-1853 Hex Key (ball) is required to turn the 8S7271 Setscrew (11) instead of the 5P4205 Wrench. We stand behind our work and offer a 100% satisfaction guarantee. At D&E Diesel Fuel Injections Services, we are committed to providing our customers with exceptional service and quality workmanship. Fuel injection nozzle test 9. Ex. Flywheel inertia’s moment: 0. To assure uniform delivery, calibrating stand test nozzles should be tested for balance (equal delivery) every six months or whenever 200 pumps have been tested. A breakaway of a positive displacement pump. We regularly work with these companies: Stanadyne, Roosanaster, Bosch, CAV, Lucas, Simms, Delphi, Denso, Mico, Yanmar, Zexel, Diesel Kiki, Kubota, Ambac, American Bosch, Deutz and Hatz. Assemble the pump 4. 1. Self Assessment ROBERT BOSCH. fuel in a safe manner. 1 CP4. Air bubbles – a sufficient volume of water should be passed to purge any air bubbles. Apr 2, 2020 · This video will show you how to restore your old injector nozzle tip. WARNING Verify torque values on all connections in order to prevent fuel leaks which could result in an engine fire. of pump cylinders 1 2 Pressure (bar) 1,600 1,800–2,000 Cam lobes 2 2 Lubrication Fuel Fuel Fuel control Fuel control by metering unit Fuel control by metering unit Supply pump EKP Gear pump Applications PC, LCV, HCV PC, LCV It is important that an equal amount of fuel is delivered to each engine cylinder and at the correct time. Jan 30, 2024 · The injection pump seems to be an engineering marvel with complex internals and and numerous components that require manual adjustments to properly set it up. Inspect for fuel leaks: Examine the injector pump and fuel lines for any signs of leakage that could affect the pump’s performance. If you are not completely satisfied with our service, we will make it right. You may find it useful to print out all of Jan 30, 2018 · Mechanical fuel injection works well for naturally-aspirated or forced-induction engines and handles most any type of fuel — gas, ethanol blends, methanol, and even nitro blends. Aug 5, 2014 · Chen, Di, and Su et al. 72 grams/cc, ie. If free from contamination connect to the engine driven fuel pump using the appropriate Fuel Injection Pump - Remove SMCS - 1251-011 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 278-4138 Fuel System Protection Gp(1) 1 (1) This tool can only be used one time. procedure must be used for fuel system flush whenever any fuel system component has been replaced: (a) Utilizing the airframe boost pump, flush a minimum of 1 quart of fuel from the fuel pump inlet hose into a clean, dry container. Mar 22, 2022 · Created by InShot:https://inshotapp. Start the engine and idle engine until coolant temperature is at least 170 degrees F. Within 2-feet of sending unit is recommended. If you measured volume of the fuel you need to divide by the density of fuel, normally around 0. The video covers just a portion of the test and calibration procedure. Link to his new kit (Oct. Center height of the diesel pump test bench: 125mm. When the pump plunger completes pumping the fuel for that cycle the pressure drops, causing the delivery valve to be pushed down Abstract. We also have a extremely wide variety of fuel injectors that we service. Flow stability and pump response time – there is a need to wait until the target infusion flow rate has been reached, as large errors will occur before this. Install a tee fitting in the fuel pump outlet line at the fuel pump outlet fitting or the metering unit inlet fitting. (2016) studied the influence of post-injection parameters, EGR rate and VGT opening on key parameters of gas path, energy flow and in-cylinder combustion at different The delivery valves on the injection pump helps to ensure that the injectors will close quickly at the end of each injection. SECTION 1 - GENERAL Page Mar 1, 2024 · 8 step testing procedure covering 5 operating ranges; Nozzle leak testing procedure; Verification of proper trim coding of the injector; Dual monitored fuel return values; Temperature controlled calibration fluid; Complete report detailing number of tests passed/failed; Benefits of testing DD13/15/16 Fuel Injectors: Sep 7, 2019 · CRD Diesel - Calibration under way on this old school Simms diesel pump off a Ford. In the direct-injection method, fuel is injected directly into the cylinder, where it is mixed with air. Operate the boost pump and allow a minimum of 1 gallon of fuel to flow through the system. O-rings can be Figure 2. To check the pump’s calibration, you must have an accurate Apr 15, 2019 · However, in this paper a model-based calibration procedure based on evolutionary algorithms is investigated to fulfill the feed-forward controller look-up tables. 4. 8. com/store/variab In one revolution of the pump shaft, the piston delivers two pumping events Technical specifications CP4. 0 Adjustment and Test: Adjust and test the TITAN EXP Fuel Injection System in accordance with procedures contained in the TITAN EXP Fuel Injection System Manual and calibration data contained in the Oct 28, 2019 · Adjustment is done internally by changing the parts described by Kent in this video. Disassemble the pump for cleaning. Please refer to the pump’s user manual for instructions on how to operate the pump. I saw them set up a C414 new fuel pump in about 45 minutes with this set up on the wing! 3412 Fuel Pump Testing and Adjusting - Free download as PDF File (. That means the VP44 injection pump is only using 12 volt power and ground. We are equipped with calibration stand specifically for Greaves Fuel Pump & injector calibration. This comprehensive guide will delve fuel pump pressure, idle mixture setting, and the maximum/mid range metered fuel pressure and/or flow values. Warning: Caution must be oberved when installing any prod- line. Press and hold the Calibrate Button (MT500 pump) or place the magnet on the module (50/150/200 pumps). Standard adjustment mm-shims Altitude Compensator (I think it’s 2 mm) 2. 7. www. The condition is found when the injector is re-moved and the sleeve comes out with the injector. Clean the pump 3. Note: If an injector nozzle gasket had been used for the seal Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 278-4138 Fuel System Protection Gp (1) 1 ( 1 ) This tool can only be used one time. These checks involve the precise adjustment of various parameters, such as fuel-air mixture, injection timing, and pressure, to achieve the most efficient combustion. Performing a chemigation injection pump calibration. The fuel flow rate can be calculated from the weight delivered divided by the time, ie. 10. From there, a piston compresses the fuel, increasing its pressure. Apr 29, 2014 · Testing of fuel injector is carried out as follows. Using timing tools to reset the fuel injection pump timing if needed. Combining the VPA with a rotating multi-valve holder provides workshops with a powerful and efficient tool providing May 22, 2019 · The constant circulation of fuel through the injector renews the fuel supply in the chamber and aids the cooling of the injector. Section 6-4. Before calibration, ensure that you have the following items ready: - The Contec infusion pump. What's inside this service repair manual: TABLE OF CONTENTS. Overall dimensions: 200X90*170CM. Removal Of Shutoff Solenoid And Fuel Ratio Control Feb 24, 2020 · The main components of a fuel injection pump in the sleeve metering fuel system are: plunger (7), barrel (3), and sleeve (8). Check engine 3-phase power supply: 380V/50Hz or on request. The Model 20 ATM-C Porta-Test unit is available from the following manufacturer: Approved Aircraft Accessories 29300 Goddard Road Romulus, Michigan 48174 1-734-946-9000. Positive displacement pump injector. pdf), Text File (. The injectors must close quickly in order to prevent fuel “Dribble”. 2. Section 2. NOTE: Replacement of only the injection pump does not require this procedure. small engines operating at high speed. As each injection pump is built at the factory, GM required them to deliver a specific amount of fuel for emission purposes. The inspection procedures listed below outline how to identify which design injection pump is installed so that a technician can verify that the ECM is programmed with the correct calibration. FUEL INJECTION PUMP. 2 describes how to make adjustments (if required). 4 describes the procedure to measure the appropriate fuel injection system parameters and 6-4. 20cc of fuel in 10 seconds would give you Fuel Injection Pump - Remove SMCS - 1251-011 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 278-4138 Fuel System Protection Gp(1) 1 (1) This tool can only be used one time. Standard adjustment mm-shims Warm Running Device (I think it’s 0,70 mm) 3. Fuel injection unit is an essential mechanism of diesel engines, and thus, has to be designed to allow fine adjustment to the engine load. Figure 1. Calibration of fuel injection pumps 7. But the procedure to calculate the injection rate is principally the same. 2 No. Fuel pump code (calibration) does not match engine (CPL) build. inutes. Calculate the capacity of the pump at the speed and stroke rate at which the test will be run. The pump may be driven by the engine camshaf. Closure pulse and more. 7L Ford Powerstroke Diagnostics. https://www. 13. - Fuel priming pump and primary fuel filter by removing bolts, then installing and reconnecting tubes. After the engine has shut down, allow the fuel system to 1)(1) This tool can only be us. 25 grams of fuel delivered in 10 seconds means you have a 25/10 = 2. Since each pump will be a little different due to production tolerance, calibration resistors were needed. Access the pump: Locate the Zexel pump on your Hyundai excavator’s injection system. Adjusting the injection timing provides reduction of torque Apr 16, 1999 · J1668_199904. During powerup Spartan 2’s Output Sequencer will be triggered, the Output Sequencer concentrate into the injector to be mixed with the water stream. link/YTShare Common Issues with the Calibration of Infusion Pumps. page. B. Average trouble-tree working time of pump tester: ≥2500h. Once this happens, turn the ignition key to the on position and start the car. com/channel/UCRrDvq8X-zMI0coHOcI REL Calibration Center, Cebu City. S. This operating fuel system contains high pressure. The plunger moves up and down inside the barrel and sleeve. Nozzle valve lift 10. The control functions for the fuel injection system are integrated in the engine control module (ECM). 5. 1 ppm is possible. Enter into this menu and start the engine. This is the guiding principle document for the engine fuel flow set up. caterpillar 3412 fuel pump testing and adjusting Introduction. Injector piston moves with water flow. This SAE Standard summarizes the design and operating parameters for test benches so that, using certain information supplied by the pump manufacturer, the pump test schedule, and certain information supplied by the test bench Sep 24, 2021 · Turn the handle on the calibration valve so the arrow on the handle points towards the quick disconnect. We are your diesel engine calibration specialist. Creating pressure. 96, Aranvayal Village Poonamalle-Thiruvallur High Road (Near Pratyusha Engg College) Thiruvallur District- 602025, India Stanadyne The VPA 1100-6 is a fuel injector servicing test rig for fuel valves on 2- & 4-stroke engines, including fuel injectors with slide valves. For fuel #KubotaBX #InjectionPump -Upgrading/Modifying the injection pump on my Kubota BX to deliver more fuel and more power with larger plungers. This allows very accurate adjustment of conductivity figures. Surges at Idle or Hi-Idle . Symptoms of a Faulty Throttle Body. PT fuel pump AFC operation is malfunctioning or pump is not operating correctly . IAC Steps. NOTE: At the end of this document you can find a list of reference material found in Publication M-0. The barrel is stationary while the sleeve is moved up and down around the plunger to make a change in the amount of fuel for injection. w-pressure side of the fuel system. 12. To get engine to start you may have to press the throttle pedal slightly. Calibration involves measuring and adjusting the fuel injector’s parameters, such as the injector opening time and open-injector flow rate, to achieve the desired fuel-air mixture. Getting your engine into good running condition and installing an exhaust temperature gauge (pyrometer) is STRONGLY recommended before you contemplate touching any injection Laboratory glassware — Graduated measuring cylinders. Make all the connections of fuel lines. The test was carried out on fuel pump test rig. Stop the engine and reconnect the mass air flow sensor harness connector. Turn the ignition switch OFF. Fuel injector calibration drift refers to the gradual change in the fuel injection rate over time, which can significantly impact engine performance and emissions. The crankshaft position sensor has been replaced. This technique is used when a faster fuel-air mix is needed, i. evaluate the influence of fuel injection pump parameters on fuel delivery. Oct 7, 2002 · IO-360 Pumps and Aneroid Valves. Other injection parameters affecting engine performance are rate of injection, injection pattern, number of injections etc. • Piston pump driven through reduction gearbox gives long service life. May 6, 2018 · Calibration includes replacement of O-rings, oil seals, cleaning and testing with a Machine if the injection pump functions accurately so it will be adjusted to the normal settings. ump camshaft. shut down, allow the fuel system to purge for ten. CO-RPM levels and order of adjustment: a. Summary 12. For a diesel engine, fuel pressure time setting and calibration are very important parameters, which influence and increase the engine efficiency, performance, emissions, and combustion. Apr 30, 2018 · fuel pump in the tank results in quieter operation, less chance of cavitation and a reduction in pump temperature. Under no circumstances should hands be placed under the injector spray. C. Fuel-Injection System Diagram. Transfer (supply) pump must maintain minimum specified pressure since injection pump calibration depends upon correct supply pump oil pressure. Inspecting the front housing bore and replacing if damaged. To determine if repair is possible or replacement is necessary perform the following procedure. • High calibration resolution, typically as low as 0. Calibrating Fuel Injectors British Standards Institute Staff,1998-09-15 Fuel injectors, Test equipment, Calibration, Fuel pumps, Injection pumps, Engine fuel systems, Engine components, Diesel 2011 – 2016 6. Inspect the water pump shaft, fan buh and idler for wobble and evidence of grease leakage Our Promise. Later on we will change the Custom Linear WB settings to account for offset and linear errors. or to within the operating range defined in 3. 1,864 likes · 102 were here. An internal filter can be found on this model. 8kg·m2. If you troller but is also capable of being far more tunable than System, call 951-340-2624. A faulty throttle body can induce several drivability issues and DTCs (diagnostic trouble codes). Rebuilding a Kubot Oct 12, 2023 · Step 1: Preparation. 3. Also note that 1 MPa (megapascal) is equal to approximately 145 PSI, 100 kpa is about 14. 5kw~15kw. com Stanadyne SpA Via Matteotti 158 25014 Castenedolo (Brescia), Italia Stanadyne Amalgamations Private Ltd. Injector calibration is not correct or does not match (CPL) build list . txt) or read online for free. These tools are designed to make precise adjustments to the pump’s internal components. 1 PreparationStabilize the temperature of the injec. Aug 30, 2021 · TESTING AND OVERHAUL OF A DIAHATSU FUEL INJECTOR #Fuel injector cleaning. Injector pump has been overhauled. Fuel supply line restriction between the fuel pump and the injectors . Jun 10, 2023 · Fuel injection calibration checks are a critical process in ensuring the optimal performance and efficiency of internal combustion engines. turn the key on and go to Initial Setup on the hand held. Disconnect the mass air flow sensor harness connector. - A stopwatch. Here is a picture of an awesome set of Fuel Flow Set Up gauges built up by Pedron Aircraft Works in Denton, TX 940-453-5324. Proper dispersion is essential if the fuel is to mix thoroughly with the air and burn efficiently. - I do not own the right Fuel Injector Flow Rate Programming Circuit/System Description. 5L diesel injection pump replacement and electronic timing check to verify TDCO. 6. Record the starting level of the calibration cylinder. Mount the pump on the FIP test rig 5. SERVICE MANUAL. New and remanufactured Exchange Pumps being stuck-fast to the injector by carbon, the injector must be replaced. Installing bolts and Dec 1, 2020 · 5. 5 - 1. Perkins Diesel Service provide the necessary services to repair diesel fuel injection pumps and calibrate the system for the proper delivery of fuel and pump performance. Lock fuel injection pump (2) in this position. 3. Fuel Injection System (fuel injection pump & nozzle ) 5. First, run a flow-rate test on the infusion pump before calibration. b Cranking or starting the VP44 injection pump is operating in what is called “open loop” electrically. Driven from a pad on the right-front side of the crankcase, the fuel pump takes gravity-fed We would like to show you a description here but the site won’t allow us. Lubricating and installing a new O-ring seal on the fuel injection pump. We calibrate all kinds of diesel fuel engines. full load point – CO level – RPM. Following steps were performed to conduct the experiment. If mounting the pump in the tank is not an option, install the pump as close as possible to the tank. This phenomenon is caused by various factors, including wear and tear on the injector, changes in fuel properties, and variations in Mar 13, 2008 · Remove the engine-driven fuel pump inlet hose and terminate the end into a large, clean container. youtube. Loosen bolt (26) with 1S9836 Wrench (8) or 5P4206 Wrench. May 21, 2016 · this video will help you set up injector pumps on 2. - A screwdriver. A fuel injection system must increase the pressure of the fuel to overcome compression pressure and to ensure proper dispersion of the fuel injected into the combustion space. Repair or Replacement of N2 Electronic Unit Injector. Please perform the following fuel system flushing procedure prior to performing further engine on which the fuel injection system is installed or twelve (12) years since placed in service or last overhauled, whichever occurs first. With the injector priming valve open, operate the hand pump to prime the Jul 5, 2023 · Here are the steps to follow: 1. Do not open the high pressure fuel system without allowing the fuel system to purge. This document describes the features, disassembly, reassembly and adjustment procedure of the fuel injection unit (Model YPD-MP2,MP4) for Yanmar Diesel Engine Model TNV. 4). Orifice test of fuel feed system 6. And no, this would not be their first rodeo with these gauges. Run the pump for the desired amount of time, generally 0. Phasing of fuel injection pumps 8. J48922 16 Remove and discard the injector nozzle gasket from the in-jector tip or copper sleeve bore. Road vehicles — Fuel injection equipment testing — Part 1: Calibrating nozzle and holder assemblies ISO 8535-1, Diesel engines — Steel tubes for high-pressure fuel injection pipes — Part 1: Requirements for seamless ISO 8984-1, cold-drawn single-wall tubes. Jul 12, 2023 · The fuel injector is a crucial component of the engine’s fuel system, responsible for delivering the precise amount of fuel needed for combustion. Feb 21, 2014 · This document provides instructions for installing a fuel injection pump, including: 1. • P0172: Fuel System Rich • P026D: Injection Quantity Too High • P0300: Engine Misfire Detected • P2A00: HO2S Performance Sensor 1 Correction If you encounter such a situation,DO NOTreplace the fuel system as described in Service Bulletin #16-NA-102. 0 minute. 4 L and 3. n- nett the injector to the apparatus with the adaptor (see 3. MODEL PE(S)-6 MW. After the engine has shut down, allow the fuel system to • Small piston type injection pump to overcome pipeline pressures. Feb 11, 2019 · Dear friends, now we are showing here how to check the status of the FIP fuel injection pump. Turn the lever (18) on shaft (24) enough to move the top of plunger (28) of 3P1540 Calibration Pump (1) below top surface (27) (of 3P1540 Calibration Pump). Hook up your scan tool. Inspect the flushed fuel. d one time. Sep 2, 2017 · Check the fuel pump calibration on the engine if required. VPA 1100-6 is PLC controlled and has built-in test programs that can be customized easily. In order to do proper diagnostics, you will need a scan tool, diagnostic service information and some special tools available from Ford SPX or Freedom Racing Tool and Equipment. After the engine has shut down, allow the fuel system to purge for ten minutes. 4. Apr 6, 2010 · 4. Mar 31, 2022 · Results showed that for the case at 0% EGR level with conventional injection timing, about 30% of the fuel exergy was destructed during combustion processes, and as EGR level increased to 45% Summary of Contents for Stanadyne DB4. The look-up tables obtain the fuel injection and air induction system parameters based on engine speed and relative load and guarantee the optimal operation of engine. ar to those used on petrol engines. de the following preparation and test procedures. Open the cover on pump 1. Air bleed nozzles are to be cleaned and inspected at overhaul. - Fuel transfer pump by Aug 3, 2021 · I’m looking for the Fuel Injection Pump adjustment procedure (Bosch PES 6 KL 70 B 120 R20Y) USA 1969. Typically, the bulk of pumps came down the line with a #4 or #5 resistor. Once the fuel system is installed checking the fuel pressure on the inlet side of the CM recommends the Model 20 ATM-C Porta-Test unit (P/N 630045-20, ATM-C, or equivalent), to ensure the fuel injection system meets all pressure and flow specifications. Apply sufficient pressure to fuel injection pump gear (2) in a counterclockwise direction in order to remove the backlash. Reuse is permissible after Fuel Injection Pump Calibration Data British Standards Institute Staff Diesel Engines. DIAPHRAGM-OPERATEDThe diaphragm type is basically simi. 0 L john deere engines Apr 11, 2009 · Start the engine and warm it up to normal operating temperature. At overhaul, the fuel servo must be calibrated and tested on a factory approved, certified flow bench. 5 grams per second fuel flow rate. Check for fuel quality: Ensure that the fuel used is clean and free of contaminants that may clog the system. • Simple to install and low cost of ownership. Inspect Water Pump, Fan Hub and Idler Pulley. experienced qualified automotive technician. Hit enter and find Idle Setup. Isolate the pressure gauge from the System by closing the isolatin. Poor throttle response – A sticking throttle blade or an incorrect signal from the TPS to the ECM will cause a mismatch in engine speed relative to how the driver operates the accelerator pedal. Remove the valve mechanism cover. The one you're interested in for fuel system adjustments is Continental Publication M-0, STANDARD PRACTICE FOR SPARK IGNITED ENGINES. To help you get started LOBO Oct 13, 2017 · The pump can only be properly calibrated by a Diesel injection specialist on an injection pump test bench, this is not intended as a DIY at-home pump calibration guide. A. The Continental 360 engine drives a positive-displacement, vane-type fuel pump, which has the ability to supply over twice the fuel needed for proper engine operation at any power setting. Please like & subscribe my channel. . #Auxiliary Engine # fuel injector# Diesel generator #merchantnavy #maritime #mar The document provides instructions for removing and installing various fuel system components on Caterpillar 3114, 3116, and 3126 engines, including: - Fuel filter base by removing bolts and disconnecting tubes, then installing with new gasket and reconnecting tubes. Jul 24, 2017 · Fuel injection pump phasing is a procedure that adjusts the fuel injection timing of the fuel injection pump relative to the crankshaft. e. Allow the pump to run until the lines are flushed and filled with liquid. In order to initiate the relearn: 1. Start By:a. Do not open the high pres. The process begins with the fuel being drawn into the pump through an inlet valve, which opens to allow fuel to flow into a low-pressure chamber. In order to lock fuel injection pump (7), loosen locking screw (5) in the fuel injection pump. Step 2: Run a Test. Source: Water and Nutrient Management for Greenhouses (CCEAWG 1996 -NRAES-56) Figure 3. Feb 20, 2020 · Install 3P1540 Calibration Pump (1) in the place of one of the fuel injection pumps according to the procedure in Step 9. Net weight (kg) of the injection pump test stand: 1000 after packed. 2019): https://mercedessource. and also tuning the pump for even flow and pressure to each injectors. Inspect the fuel injection pump to see which pump the vehicle has: • Vehicles with the new style Symmetrical Cam design pump will have one large Feb 17, 2015 · Calibration Procedure. We also test and rebuild diesel fuel injectors. Testing & Calibration of STC & Top Stop injectors also done in-workshop , our goal is to provide the most cost effective service solutions for diesel engine owners seeking diesel fuel injection system testing, repair and/or replacement. Feb 20, 2020 · The following procedure for fuel injection pump calibration can be done with the fuel injection pump housing on or off the engine. Calibration tools: Use specialized calibration tools recommended for Zexel pumps. Actual and desired timing. yc lu uq id ks aw ec kk me gy