injectors don't open...
Thread Starter
Intermediate
Joined: Apr 2004
Posts: 38
Likes: 0
From: nyons
injectors don't open...
3 days i'm searching ....but it won't start (88 cab) , no fuel at spark plugs ,and injectors not sending fuel ,tried the bulb test and have a dim light flickering ... One strange thing : If i turn the distributor for a lot of timing advance : it start for a second !!! at wot only ! and dies immediately ! have changed fuel pump , relay ,filter ...etc ,have good firing at plugs ....LOSING MY MIND !!!!! HEEEEEEELP !! :confused:
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: injectors don't open... (devil427)
Did you check the fuses? I believe each bank has one.
I also believe there are drivers in the ECM and if they've gone bad, it timne for another ECM.
jAKE
I also believe there are drivers in the ECM and if they've gone bad, it timne for another ECM.
jAKE
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: injectors don't open... (devil427)
Here is a tip. The ecm requires a spark reference from the distributor in order for it to fire the injectors. Remove the distributor cap and make sure that the distributor is turning when you crank the engine. If it does then check for spark at the plugs, if there is no spark then you need to figure out why. It could be a defective module causing loss of reference signal to the ECM.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Re: injectors don't open... (devil427)
Use your timing light while cranking and see if the spark is occurring at the right time. Next, spray some starting fluid into the MAF while cranking and if the engine runs for a short time, then you have fuel problems (no fuel delivery). The 12v lamp test of the injectors should show a pulsing light while cranking.
