New upgrades, no car won't start
Feb 21, 2018, 02:20 PM
#31
Bringing this back...so my initial issue was fixed, timing was off. Had to replace all the intake valves. 
I also found that one or the coils was shot, so that was replaced. Car ran fine for 2 days, now I'm back to a misfire that makes no sense. I've tested and replaced/fixed everything that seems to make sense to no avail, so maybe someone here can help me think past my own mental blocks. The car throws no codes and is misfiring seemingly on cylinder 1 or 4, or both. Tested this by pulling injector harness while the car was running.
Here's what I've tested so far...
Compression: 145,145,150,145
New coils and wires
New plugs (2 different sets of NGKs)
Noid tested all injectors and replaced resistor pack
All injectors are clicking under a stethoscope
cam sensors checked out fine, I even checked and made sure the cam trigger was installed correctly
I'm at a loss, any ideas are welcome. Thanks guys
I also found that one or the coils was shot, so that was replaced. Car ran fine for 2 days, now I'm back to a misfire that makes no sense. I've tested and replaced/fixed everything that seems to make sense to no avail, so maybe someone here can help me think past my own mental blocks. The car throws no codes and is misfiring seemingly on cylinder 1 or 4, or both. Tested this by pulling injector harness while the car was running.Here's what I've tested so far...
Compression: 145,145,150,145
New coils and wires
New plugs (2 different sets of NGKs)
Noid tested all injectors and replaced resistor pack
All injectors are clicking under a stethoscope
cam sensors checked out fine, I even checked and made sure the cam trigger was installed correctly
I'm at a loss, any ideas are welcome. Thanks guys
The following users liked this post:
RightSaid fred (Feb 21, 2018)
May 13, 2018, 02:20 PM
#34
Bringing this back for more ideas. Still have not solved this problem. I verified I have spark coming out of both coils/wires, fuel out of all 4 injectors and compression is good. Cam and crank sensors are getting 12v, ground and sending a signal, verified by a local garage after they had replaced them. I am leaning towards my ECU got fried somehow. Any thoughts on where I should begin my investigation of this and/or ways to test the ECU?
May 13, 2018, 03:08 PM
#35
EvoM Community Team Leader
Bringing this back for more ideas. Still have not solved this problem. I verified I have spark coming out of both coils/wires, fuel out of all 4 injectors and compression is good. Cam and crank sensors are getting 12v, ground and sending a signal, verified by a local garage after they had replaced them. I am leaning towards my ECU got fried somehow. Any thoughts on where I should begin my investigation of this and/or ways to test the ECU?
Thread
Thread Starter
Forum
Replies
Last Post
mike2016
AEM EMS
16
Feb 27, 2008 09:39 AM