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Car Forum / GMC Cars / March 2005need help for injectors
hi myself navneet from new delhi ihave a gm opel astra club problem is there is spark at plugs but no fuel at injectors so it does not starts. can anyone help why is it so. also ow can i check my crankshaft pos. sens What year/engine/mileage is the car? Are there any DTCs? Is the SES/MIL/check engine light on? Do you have power at the injectors? Is there fuel in the rail itself? Is there fuel in the tank? (don't laugh, I've seen it) Did you check the fuel pressure? When you crank the engine is there a ground pulse at the injectors? All questions to help us help you. ;) Steve > hi myself navneet from new delhi > ihave a gm opel astra club problem is there is spark at plugs but no > fuel at injectors so it does not starts. can anyone help why is it so. > also ow can i check my crankshaft pos. sens > What year/engine/mileage is the car? Are there any DTCs? Is > the [quoted text clipped - 22 lines] > abuse: > > http://www.autoforumz.com/eform.php?p=499953 thanx for your kind suggestion. fuel pump is ok throwing fuel. there is fuel . return line is working fine. while cranking there is ticking sound at injectors (all 4) when checked directly at battery injectors work fine can cps be faulty ? > > What year/engine/mileage is the car? Are there any DTCs? Is > > the [quoted text clipped - 28 lines] >work fine >can cps be faulty ? Has anyone put any fuel "additives" in the tank? You might have plugged injectors if the rail is pressurized...... >>thanx for your kind suggestion. fuel pump is ok throwing fuel. there >>is fuel . return line is working fine. while cranking there is ticking [quoted text clipped - 4 lines] > Has anyone put any fuel "additives" in the tank? You might have > plugged injectors if the rail is pressurized...... Not necessarily, just because they are working when manually firing them doesn't mean they are working when cranking. There should be a connector somewhere between the fuel injectors and the computer. It will have the same number of leads as there are injectors. These are the control wires for the injectors, you have to make sure you have the right one. Unplug it, stick a test light to the battery positive (+) and one of the leads on the computer side. Have a friend crank the engine over and watch the test light, is it flashing? If so, maybe the injectors are clogged, if not, something else is wrong. Usually if an engine managment switch/sensor goes bad, the check engine light will be illuminated. Again, you have to let us know if the check engine light is on, which engine you have and the year/mileage of the vehicle to get proper help. Steve |
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