Low compression 1 bank

[jogaari]

I recently bought a 2022 Mach 1 at an auction. From what I could tell, the car had only minor damage, with all airbags still intact. However, when the car arrived, I discovered the oil cooler was broken behind the bumper, and the engine was completely dry, which was obviously concerning.

I replaced the oil cooler and added the necessary oil. When I started the car, I immediately noticed a misfire in the engine, accompanied by error codes P0340 and P0345. I tested the camshaft sensors and even swapped them, but they appeared to be working fine.

Next, I performed an engine compression test. Bank 2 showed around 255 PSI across all cylinders, but Bank 1 was a different story. The first two cylinders on Bank 1 registered 0 PSI. Unfortunately, my battery died before I could complete the tests, leaving me with more questions than answers.

So yea looking for some insights and ideas

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[Call_Me_Bruce]

Get a endoscope and take a look at the cylinders on bank 1.

 

[jogaari]

 

[jogaari]

What I saw was that the chain between the two cams is missing

 

[ORRadtech]

At least it's not an interference engine.

 

[Cobra Jet]

If engine was dry - who knows how long it was run that way….

Despite the chain issue, I’d definitely pop the oil pan and start checking bearings…

 

[ice445]

At least it's not an interference engine.

Sure it is

 

[ORRadtech]

Sure it is

Is it? Sorry I must have read something wrong.
Good luck OP.

 

[ice445]

Is it? Sorry I must have read something wrong.
Good luck OP.

Not that I'm trying to imply you're dumb, but I'm curious where you saw it isn't? I think there are many cam profiles where it's not but full lift/duration and it will strike out of time I'm pretty sure

 

[engineermike]

This is a 12/1 engine. There is very little extra space in the combustion chamber at tdc. I believe this is an interference engine.

 

[luca1290]

The car is pretty new, If there isn't structural damage I would definitely go and fix it.
At most is a partial engine rebuild and some cosmetic damage.

 

[jogaari]

Well update on this. the no Oil caused this and made the Cam got suck which broke the chain.
till now by the test I have done only 1 valve was bad. But I am replacing the whole head with new valves and cams just to be sure. ( piston heads have been checked and they were good. the thing is they the car was started but not driving which I think is why my pistons are ok)

 

[Call_Me_Bruce]

That's a lot of metal to go through the engine. Hopefully the mains are not damaged.

 

[17MagMetal]

At least it's not an interference engine.

Was this a joke?! I thought coyote’s were most definitely shrapnel producers upon timing failures.

 

[ORRadtech]

Was this a joke?! I thought coyote’s were most definitely shrapnel producers upon timing failures.

Nope, not at the time. If you read the thread you would have noted that I said I read something wrong.

As an aside, the OP lost a timing chain and didn't damage any pistons or lock up the engine despite trying to start it. Guess he got lucky, huh?

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