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LiqTenExp · 07-17-2021, 07:47 AM

Well, I'm pretty happy this morning. Took it on a drive up and down a hilly road near me and cylinder #3 is no longer a hot mess when it comes to misfires.

So it was likely the injector. I did replace every seal along the way to include SC lid, SC intake manifold, IC bricks, and all the seal washers on the bolts that hold down the SC. I didn't see any obvious signs of leakage past any of them except the IC Bricks. My passenger side IC brick seals were leaking due to loss of tightness on the two screws that hold it into the SC. Replaced those seals as stated and made sure the screws were cleaned, primed, and loctited.

Pictures below show the before/after, I expect some misfire on decel, with big cam, etc but not what was going on with C#3. Top one is before, bottom is after my repair.

07-17-2021, 07:47 AM	#21
LiqTenExp Drives: 2017 ZL1 Join Date: Jan 2017 Location: NJ Posts: 926	Well, I'm pretty happy this morning. Took it on a drive up and down a hilly road near me and cylinder #3 is no longer a hot mess when it comes to misfires. So it was likely the injector. I did replace every seal along the way to include SC lid, SC intake manifold, IC bricks, and all the seal washers on the bolts that hold down the SC. I didn't see any obvious signs of leakage past any of them except the IC Bricks. My passenger side IC brick seals were leaking due to loss of tightness on the two screws that hold it into the SC. Replaced those seals as stated and made sure the screws were cleaned, primed, and loctited. Pictures below show the before/after, I expect some misfire on decel, with big cam, etc but not what was going on with C#3. Top one is before, bottom is after my repair. Attached Images __________________ 2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)