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vince1 · 10-07-2021, 01:45 PM

It does look on the top left picture that carbon may have been hitting the head. It must have been burning quite black or if it was from oil, then blue.

Yeah, the water trick probably would have worked. I pulled my six cylinder only to find that the oil rings were stuck. Water would have cleaned that up OK. Seals were needed too though.

Was your Rochester a quadrajet? I used to think they were all gas hogs but am finding ours to work well and it is not giving negative surprises on fill ups. On the other hand yours should work and there must be something wrong with it like wrong jets or a missing piece or assembled wrong or something. Have you got an overhaul manual for it?

Press on and you will get it figured out.

10-07-2021, 01:45 PM	#10
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,164	Re: would carbon knock be my problem ? It does look on the top left picture that carbon may have been hitting the head. It must have been burning quite black or if it was from oil, then blue. Yeah, the water trick probably would have worked. I pulled my six cylinder only to find that the oil rings were stuck. Water would have cleaned that up OK. Seals were needed too though. Was your Rochester a quadrajet? I used to think they were all gas hogs but am finding ours to work well and it is not giving negative surprises on fill ups. On the other hand yours should work and there must be something wrong with it like wrong jets or a missing piece or assembled wrong or something. Have you got an overhaul manual for it? Press on and you will get it figured out. Last edited by vince1; 10-07-2021 at 02:20 PM.