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98 Posts
Hey. I bought an 04 6s sedan a couple months back with 117k on the dial. I switched to synthetic oil the day I bought it, and a couple weeks later, my oil light cam eon saying I am low. I was 3 quarts down. Filled it back up, checked for leaks and found nothing. PCV seems to be alright, but idk for sure. In the 2 months I've owned it, the #3 cylinder has has 2 misfire episodes, and the #1 cylinder has had a single episode. The first time, #3 and #1 were fine after I replaced coils. All the plugs are new. Now, this second time, the #3 cylinder is misfiring again and the new coil did nothing. I pulled the intake manifold to find a gasket missing, so I replaced them all. I just put it back together, now it is running worse than ever. Missing at idle, bouncing the rpm between 1k and 1400 rpm and won't idle less than that. Has no power at all in any gear. I do have three broken manifold bolts that wont tighten down, but they are not next to each other, so it should still be tight enough. I'm freaking out that the cat melted or something, but I know so little about these engines. My mechanic friend said its most likely an unmetered air issue after spraying some WD40 at it and watching it suck through the manifold, but that was before the gaskets. Idk what to do. I just bought this car to replace my other car that died. I have horrible luck with motors. I know I have gotten the misfire codes for 300, 303, 301, and my intake lean code due to my Injen CAI. Other than that, I don't think i have any real codes atm. Also, my tsc stays off and the little swerving car traction light is lit. Its like I'm in limp mode or something. Please help.
