Engine Issues

[Speedtospare]

So lets diagnose my buddies 03 Marauder. Spun Bearing? Almost sounds like rod knock. Motor is bone stock except for full exhaust, CAI, a tune, 4.10 gears.

https://www.youtube.com/watch?v=uO08D1Li53w


https://www.youtube.com/watch?v=uO08D1Li53w

[Ponyryd]

Sounds like a broken piston and the rod is banging around in the bore.....could be a rod knock too though. If you wanna help pinpoint it you can tell him to disconnect coils or injectors while it's running, if the noise goes away when disconnecting a specific cylinder it's likely a rod knock.

[Speedtospare]

Car idles fine, just 100 rpm higher.

[ZR]

Need to hear in person to know better. Mod motors can be a bitch to figure out where a sounds coming from. Does it sound like its coming from a valve cover, timing cover or from down below?

[Intmdtr]

Not a spun bearing.....sounds more like a wrist pin hammering around in there. Spun a bearing on an 03 cobra and sounded nothing like that.

But again, hard to diagnose without seeing it in person.

[Tailites]

diagnosing the problem?..pretty obvious it needs to come apart

[99chromegt]

drop it like its hot..... got any misfire codes?

[Lips]

hammer it till something comes thru the block, then you'll see the problem...

hard call as to what it is, but it sure sounds like a sick motor.....

[ZR]

Regardless of what the noise is, gotta jerk dat bitch outta there and strip to inspect. Modular engine making a noise seldom works out well for the wallet.

[bbriann]

Might consider pulling valve covers off and look at valve train prior to pulling motor.
I myself have had a rocker come off before....I now have rockers from a GT500 motor on my little 2V