Junk Motor

[RICK LAKE]

Jeffko Befor I jump into this, do you have any pictures of the piston tops? If this motor was running real lean you would have felt it. Motor would be knocking. You should have an innovate air/fuel monitor. This runs separate from the FI system in your car. Call it a backup checker. Pull the plugs and O2 sensor and see if they are all wet or Black fouled. The motor sound like a washdown job with 2 bad injectors damaging the O2 sensor and the FI system trying to adjust by leaning out everything. If you want to send me a private mail I will try and help you find out what happened. Pictures would really help. It's hard to find a REAL fuel injection person to setup a system. It took me 3 months and a 200mile trip for my FAST system. It was worth every dollar. Is not Wheel to Wheel in your neck of the woods? Rick Lake

[jeffko]

Rick, you have mail.

[RICK LAKE]

Jeffko Jeff give me a number to call you at tomorrow night around 8:00pm Rick L I can't type this much to explain

[ByronRACE]

It's very difficult to break a ford V8 by running it lean.

That is, unless it begins to detonate.

So, did it run lean ONLY...and cause thermal damage like melted pistons (near impossible to achieve, the engine won't hardly run at that lean air/fuel ratio), or did it rattle and you didn't hear it and/or didn't back out of it and holed/broke pistons. If you have broken rings, lands, and associated damage...it detonated.

Detonation is usually caused by excessive spark advance. Yes, a lean mixture can influence it...but it's a lesser influence. A properly timed engine can tolerate a very lean mixture; even at wide-open throttle...unless this is some exotic high-compression thing.

Byron