• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

misfire problems



tune up coils, icm, those are the first stings to check.

move plug 1 to 3, then the plug wire, swap two coils around. your looking to make the misfire move. last ditch effort is the injector swap around. then the icm to get tested at a parts store.


unless your just long over due for a tune, just do that.
 
Ok...done all that. Here's the situation, a mechanic told me i had a compression problem. Either a faulty injector or brainbox not sending correct voltage.

Sent from my SM-G920P using Tapatalk
 
swap the injector then, check over your wires to the #1 injector.

bad pcm dont normally cause just a misfire.

and a injector wont cause a compression problem. think bad valve or f ed up piston.

damn and your a v8, missed that part. same rules apply tho. move stuff till the misfire moves with it.
 


Displacement on demand, same as active fuel management.

The LS4 has DoD and switches to 4 cylinders while at normal cruising speeds. The cylinders that shut down are known to burn oil and even sometimes lose compresssion. The other biggest failure if have the lifter sticked closed or ruin the camshaft.
 


He said he was gonna but im not sure if he did. Im starting to wonder if he's legit.

Sent from my SM-G920P using Tapatalk
 
If you're even guessing the mechanic's work...I'd suggest finding a new one or learn from doing it yourself. At least you know it's getting done right even if it might take you longer since you've never done it before.
 
I believe thats the route im gonna have to take. To much hustlin out here for me.

Sent from my SM-G920P using Tapatalk
 
You must log in or register to reply here.
Back
Top