Re: rough running at high engine speeds

Posted by PackardV8 On 2017/10/22 12:11:22

Loosen or remove gas cap and try again.

Also need to open up the points to .018.

At this point i will not go into alot of detail.
I've had a similar problem with a 2.0 Ford 4cyl. It turned out to be somekind of a wax or parafin building on the EXH valves on the TAPPEt side of the valve stem.

I wuit running the convenient local Marathon and (by sheer hapenstance) began to run Shell. Problem 90 % solved in less than 3 tank fulls.

Again i'm leaving out alot of detail and direct analysis and actual cleaning of the valves with a wire brush that took place over a period of about 4 years that this sticking exh valve problem had existed and only got WORSE over the 4 years.