I know it was running lean. I am trying to figure out why it would have done this. My tunes are superior and always have been. My tuner has been an awesome friend of mine for years, so I highly doubt he would deliberately destroy my brand new engine.

The block is also half filled with concrete, with aluminum rods and pistons. So there was no chance of me getting knock. Also never did see my cel flash at me.

Injector failure or even the crank timing sprocket being tweaked out over 1mm. Whatever caused it could have been a factor of multiple things. Car ran the first 300 miles flawlessly with a perfect crank timing sprocket. Things had to of gotten loose and stretched the timing sprocket causing a weird issue like this. It's possible it could have advanced or retarding the timing, and that's undetectable. That's what I personally think what happened.

 

You seem to be contradicting yourself?





Yet again.....fuel pressure problems which you'll find when you fit a pressure gauge and learn how to use it.


Or take it to a "pro".


Fiddling with software can't fix broken hardware.

 

So you're telling me a car can only run lean when the tune is ****ed up? News to me...

You must know me so well since "I don't know how to use a fuel pressure gauge." Take a look at my engine bay shot. See the fpr and a gauge on it, and putting a camera with its flash on with a video does just of good of a job as having one inside the cab.

 

The more concerning question is how did the crank pulley bolt become loose? Only time I've seen that come loose on a motor that was pretty badly out of balance, because the flywheel came loose, because the motor was out of balance due to offset wrist pin pistons being in backwards. It kept surprising me as I took it apart . I'm not saying your pistons are in backwards, but you need to really look hard for the root cause of this issue.

 

They could have been put in backwards from the builder, I'll have to check that one out. The actual timing gear on the crank where the bolt and washer tighten up to, was cracked on the rim where the washer buts up to it and rides inside that rim. The timing gear more than likely got slopped out and taking the timing gear sprocket with it.

 

The motor I took apart with these issues, the timing gear was cracked as well as the balance shaft delete spacer.