Rough idle/no rev problem

[heymanwatchthis]

If you have the orange oil fill cap, try replacing that. I had similiar issues, not as bad though. Original oil filler cap would not tighten all the way, causing air leak. Sometimes suction of engine running would pull cap tighter, making a seal - this made it harder to track down the issue.

I bought a new oil fill cap that is very tight, and it made a huge difference in how the car runs - feels like a new engine!

Good luck!