1994 F150, 215k mi, ~3k mi on rebuilt engine.
I purchased and installed a rebuilt 4.9L I6 engine for my F150 after a massive oil leak trashed the factory engine. I had been driving it for a few months, and had got nearly all the bugs worked out, except a fuel odor, and a low-speed miss that seemed to be getting worse.
Thinking the two were related, I suspected a fuel injector leak, only a fuel pressure test showed no pressure drop, and no anomalous plugs noted. I now suspect a leaky Schrader valve in the fuel line is responsible for the fuel odor, and I have ordered a replacement.
I then moved on to compression. Alas, my compression readings are as follows:
No 2 compression increased to only 98 after spraying in oil.
Anybody have any feedback about warranty claims on a rebuilt engine?
Should I have a leakdown test performed?
If I pulled the injector to the #2 engine, would it pass emissions, or would the unburnt O2 richen the overall mixture?
What if I pulled the pushrods out of #2?