Car won't start
12-06-2005, 10:58 AM
Post: #3
 
Ivan141 Wrote:Okay, the injectors work like this: They get a direct permanent 12V, the ECU is connected in the groundpath of the injectors and closes the path to ground when it wants to fire the injectors. So if your not turning the engine and the ECU is not trying to fire I would expect the injectors to get 12V on both leads (no voltage difference, no injectors firing).
It somehow seems strange that ECU would output 12V on the injector ground pin all the time and switch to ground when necessary. But of course, if it does so, there is no harm. Just seems strange to bother to output 12V instead of just applying the ground to the pin.

Ivan141 Wrote:How have you checked your fuel pressure? Easiest way I think would be to disconnect the cold start injector fuelline and run the starter for a short bit. If the fuelpump is working OK you should get an expensive fountain (like JesseP explained it to me Smile ).
You can also try to listen or feel if the injectors are firing.. I believe some use a stethoscope or put a screwdriver against them to feel for their clicking..

DONT FORGET TO CHECK YOUR FUSES! (especially the one called EFI)
Yes, I got an expensive fountain, when I unbolted fuel line from the rail.
EFI fuse is fine, and other fuses seemed to be ok as well.
I could not feel injectors working with my fingers. I will try with a screwdriver.
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Messages In This Thread
Car won't start - Fii - 12-06-2005, 01:04 AM
[] - Ivan141 - 12-06-2005, 10:50 AM
[] - Fii - 12-06-2005 10:58 AM
[] - Ivan141 - 12-06-2005, 11:47 AM
[] - Fii - 12-06-2005, 12:57 PM
[] - jnk - 12-06-2005, 01:03 PM
[] - jnk - 12-06-2005, 01:12 PM
[] - Ivan141 - 12-06-2005, 01:24 PM
[] - Fii - 12-06-2005, 01:38 PM
[] - Ivan141 - 12-06-2005, 02:32 PM
[] - chadix7age - 12-07-2005, 04:55 PM
[] - Fii - 12-07-2005, 05:02 PM
[] - chadix7age - 12-07-2005, 05:36 PM
[] - Ivan141 - 12-07-2005, 05:38 PM
[] - chadix7age - 12-07-2005, 05:44 PM
[] - max_ae86 - 12-07-2005, 06:29 PM
[] - Roger - 12-07-2005, 09:27 PM
[] - Fii - 12-08-2005, 12:44 AM
[] - Ivan141 - 12-08-2005, 09:05 AM
[] - irishtwincam - 12-08-2005, 01:19 PM
[] - Fii - 12-12-2005, 12:31 AM
[] - Ivan141 - 12-12-2005, 02:30 PM
[] - Fii - 12-12-2005, 02:37 PM

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