tr8todd
tr8todd Dork
7/24/17 7:27 p.m.

97 Miata with 139,000 miles. Engine starts fine. Slight metallic rattle at first start then a consistent rattle like a timing chain flopping around. Idles and revs fine, still a little noise. Go to drive it around the block and it gets to about 3K rpms and it bogs down. Won't go above 15mph in first. Back in the driveway, I remove the oil cap and there is massive crankcase pressure. Feels like sticking your hand over and exhaust pipe. Guy was asking $1500 so I just walked. Other than the engine being really sick, it would have made a decent first car for my daughter.

jstein77
jstein77 UltraDork
7/25/17 10:31 a.m.

Broken ring?

rustybugkiller
rustybugkiller Reader
7/30/17 10:56 a.m.

Could it be a blocked or broken catalytic converter?

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