Re: 327ci mystery

Posted by Dan Marrin On 2019/6/15 10:17:38

Tim, thanks for your thoughts. Dave Czirr suggested a while back that I spray oil along the manifold to block connection in an attempt to perhaps seal the connection and improve performance. This approach did not produce discernible improvement, but your suggestion to introduce a flammable substance to that area might give a more pronounced effect, assuming there is a gasket leak. A leak on the rear intake gasket would certainly explain the lack of contribution from those last two cylinders.

What should I expect to see when doing a running compression check on cylinders 7 and 8, and how should I interpret the readings?