Guest Posted March 8, 2003 Share Posted March 8, 2003 Here's the issue:Its a 58 Olds 88 with a 371 - rochester 4bbl. In park/nuetral the car will rev great with no apparent problems. Once in gear it will run OK for a couple miles. Then as you give it gas it start to knock very heavily, when you let off the gas and come back to idle it runs fine. Sounds like a timing problem under load. The centrifical advance mechanism appears to be fine as does the vacuum advance. Any ideas? Link to comment Share on other sites More sharing options...
another old car Posted March 10, 2003 Share Posted March 10, 2003 this is just a guess , you didnt say how many miles on carif its a high mileage engine , you might need a timing chainis it a knocking sound or spark knock Link to comment Share on other sites More sharing options...
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