Random Hesitated/stumble on start-up

[97SilveradoHD]

i have a hard time believing my brand new (not rebuilt) injectors with 10k miles on them are already leaking down...although, leaking injectors will cause a stumble right at start-up

 

[JonZ71]

Does it run fine after it stops the stumble?

 

[97SilveradoHD]

yep, idles perfect and run/drives just as it should.

 

[97SilveradoHD]

Couple new theories, bad cam position sensor, bad crank position sensor, and/or faulty o2's.
Thoughts?

 

[JonZ71]

Or just leave it alone haha, mines been doing it for a while now. I gave up trying to be honest

 

[97SilveradoHD]

Or just leave it alone haha, mines been doing it for a while now. I gave up trying to be honest

oh i've thought about that....lol but i just can't stand things that don't work how they're suppose to. There's no reason this truck can't start up smoothly every time, that's how it was designed.

 

[1997chevydriver]

I picked up an ICM from the junkyard just to test the theory (if it dont work im only out 10 bucks

 

[SAATR]

Use plenty of dielectric grease between the ICM and the heatsink! Unless, of course, you got the whole assembly.

 

[1997chevydriver]

Use plenty of dielectric grease between the ICM and the heatsink! Unless, of course, you got the whole assembly.

Whole thing.

 

[1997chevydriver]

Well unless i got an ICM from the jy with the exact same issue...... It didn't fix it..