Im going to use this to test some decapped ls truck fuel injectors to put in my v8 swapped Ford ranger. If there is sufficient demand we can easily create a Part II and add that material along with descriptions of the differences between high and low impedance injectors and why thats important and how to calculate flow rate with different fuel pressures.
Injector Rx cannot be held accountable for any errors in the data.
How to test injector flow rate. Fuel injector performance can be affected by particles as little as 10 microns 001mm. Engine aspiration Turbocharged Supercharged and Naturally Aspirated engines have different BSFCs see Glossary of Terms for definitions. You are removing the pintle cap to increase flow through the injector.
Place a thin metal rod or screwdriver on one of the injectors and lean your ear close to listen for an audible clicking sound which indicates the fuel injector is functioning. For this a test light works best to observe the pulse produced by the PCM. First hook the test-light clip to a bolt or bare metal bracket on the engine.
Injector Ground Trigger Test. The main causes of fuel injector wear or failure is contamination of the fuel system. A Duramax truck with stock injectors and tuning at operating temperature should idle with a calculated fuel rate CFR of 7-9 mm³ and that is the baseline ie.
The result is a far more accurate estimation which allows you to pick the right injector the first time. To test fuel injectors start by popping your cars hood while the engine is running. To get the flow of a particular injector at a different flow rate please use or Flow Rate Calculator.
If there are deposits on the nozzle the spray pattern can be adversely affected this can be corrected by cleaning the injectors. During the flow test our techs evaluate the spray pattern of your injectors. At DW you will find nothing but the highest quality fuel injectors fuel pumps and more.
The Injector Dynamics fuel flow calculator is not based on efficiency. Bosch Fuel Injectors flow rates injector connectors. The PCM closes the injector circuit to trigger the injector operation.
A simple test to verify the condition of the injector coil we test the resistance measured in Ohms across the terminals of the injector connector. It works by estimating airflow based on a few known parameters and then calculating fuel flow directly from exhaust lambda. Flow vs Pressure Calculator Use this calculator to estimate changes in flow rates when a change in fuel pressure is made.
By removing the pintle caps you are unrestricting the flow through the injector. Decapping fuel injectors is pretty much what it sounds like. Where the injectors are flow tested for 15 seconds at a specific fuel pressure 435 psi or 3 BAR while the injector is held Full Open ie.
To start lets briefly touch on what a balance rate is. Use the flow rate Bar listed on this site as the old pressure and the pressure you would like to know as the New pressure. The data is published as a guide and should be treated as such.
To convert Bar to psi multiply the Bar number by 147 and this is the number you would use. This calculator works with pressure values in either psi or kpa and flow values in either ccmin or lbshr. Bosch fuel injectors have broad market coverage for both OE and after market applications.
The onus for accuracy falls upon the end user. Injector data collected is based on the fuel injector cleaning and flow testing service we provided. Test each fuel injector in your vehicle the same way.
The factory uses pintle caps to restrict the flow of injectors and to help flow match injectors. Balancing point from which each of the individual cylinders gets its rate from. The number of cylinders in your engine The BASE fuel pressure you will run your fuel pressure at idle our calculator assumes a 11 rising rate fuel pressure regulator for turbo applications.
Touch the terminals one at a time of the harness connector with the test light. This video demonstrates how to perform fuel injector flow rate programming on Isuzu vehicles using the eTechnician software application from NEXIQ Technolog. Attach the test light lead to the positive side of the battery and have a helper start or crank the engine.
Initial testing of the DIG fuel injector test bench. Turn the ignition switch to the ON position. DeatschWerks is THE SOURCE for your full fuel system needs.
Unplug the electrical connector from the fuel injector you want to test. OEM injectors are designed to flow a volume within 2 percent of each other. One of the terminals.
Injectors are flow tested in two ways. What you will notice is a lack of flow rate information since this would add a cumbersome volume of material to this story. The inputs are in order of appearance.