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Motor is already tore down and parts are at the machine shop. Got studs on the way. Thanks though.

Got the engine pulled and heads off last friday and found one exhaust valve busted and pass side exhaust manifold full of fuel.

Here is picture of one of the pistons. This piston will come up to tdc and will go back down till what ever it is hits the bad spot.

Nothing looked bent. Number six did get tight when you tried to turn it over. Cant see where anything is hitting.

Dead stop

Ya if I turn it backwards it does seem to stop in the same spot. I havent marked the balancer to see for sure.

I can turn it over by hand until it gets to a certain spot and it stops. It stops with the injectors out also.

No it does not.

I have had two different scanners on it with zero codes. Once when it came into the shop and a couple times after trying to get it to crank.

We had one of the company 550s come in with blown turbo seals. The truck ran but ran like crap when we got it off the trailer. We rebuilt the turbo and replaced the oil cooler. Now the truck will only crank to a certain spot and acts like its hitting something. Stuck a bore scope in the injector...

The company I run has a 07 550 deleted that has been nothing but a headache since we bought it. A couple months ago I replaced the up pipes, the injectors on the driver side and radiator. I drove it for the couple months pulling equipment and so forth with no problems. I was pretty happy on how...

Try this link to video. https://www.facebook.com/photo.php?v=10151298052555800&set=o.308317082570981&type=3

The video if from the turbo that was on it when we bought it. It was running great till I hooked up to about a 20k load and pulled against a pretty good wind. About 5 miles into the trip is when it started. The guy we bought it from said that the turbo had been cleaned and new egr valve was...

The pic is supposed to be a video, if that dont work try this one. https://www.facebook.com/photo.php?v=10151298052555800&set=o.308317082570981&type=3

Anyone

This started happening a day after the company bought the truck. I replaced with another used turbo and it still does it but not as often. No boost leaks anywhere and isnt lacking on power. Plus the other 07 550 we have sounds like it has a massive boost leak sometimes at idle but not all the...