The Ford Barn

callbald · 01-15-2020, 09:28 AM

In reading various instructions on doing the test, I do not see anything about engine temperature. Should the engine be warmed up?

As to why i am doing the test, I have oil on the spark plug threads and the valve cover seals are not leaking. Thinking it may be valve stem seals, I want to do a health check to see if there are more problems before diving in.

Some one thought I could be seeing fuel on the treads, but there was no fuel smell. Side note, I did have one massive backfire this past summer with raw fuel getting into the muffler and blowing it apart.

01-15-2020, 09:28 AM	#1
callbald Senior Member Join Date: Jan 2014 Location: Leo, Indiana Posts: 235	64 Ford 289 leak down test In reading various instructions on doing the test, I do not see anything about engine temperature. Should the engine be warmed up? As to why i am doing the test, I have oil on the spark plug threads and the valve cover seals are not leaking. Thinking it may be valve stem seals, I want to do a health check to see if there are more problems before diving in. Some one thought I could be seeing fuel on the treads, but there was no fuel smell. Side note, I did have one massive backfire this past summer with raw fuel getting into the muffler and blowing it apart.