u/HonkHeaven

I installed the Cruzekit V3.4+ a few months back but was still blowing valve covers & I figured it was from installing the plug poorly.

So I replaced the whole intake manifold with the Dorman upgrade & plugged the check valve properly.

That was 4 days ago & it seemed to be driving fine. But on my way to work this morning I got the P0300 random cylinder misfire code.

I also have a P0299 code & P0420 code but those are items I plan to address in the future.

I just want to see if anyone has any idea of what might have caused the new code?