crank rotates almost 1 full turn but stops in either direction

[DarkoStoj]

pretty much safe to say pistons hitting the valve right? Got an engine that will go rotate almost 1 full turn in the left and right direction but stops solidly with the plugs removed.

 

[AutoRoc]

Piece of metal in the oil pump? Could be a lot of things. New engine never fired or is this a diagnosis of an engine?

 

[DarkoStoj]

Piece of metal in the oil pump? Could be a lot of things. New engine never fired or is this a diagnosis of an engine?

got a bmw here and trying to figure out if its worth fixing or stripping for parts

 

[OldbutNew]

Piston is hitting something. Could be a valve hung open, bent, or broken. Or a foreign object in a cylinder.
Do you have a borescope?

 

[sn95_311]

probably a snapped rod , pull the oil pan

 

[Billydroveit]

I'm betting a bent or dropped valve. In the line of work you're in you should invest in a bore scope! A nice articulating bore scope, not the cheapies at home depot etc...

Edit: those are pricey, even a non articulating, just flexible bore scope. Will let you diagnose stuff fast in ceised engines, and tell cylinder wall conditions.

 

[Bottlefedford]

My snap on bore scope has saved my ass more times then i can remeber.. Def one of the best tools in my box

 

[DarkoStoj]

My snap on bore scope has saved my ass more times then i can remeber.. Def one of the best tools in my box

does it work pretty good?

 

[1BADAIR]

Salvage title it probably drank some water

 

[Billydroveit]

does it work pretty good?

I've used ones from other companies, not snap on. But I've used it when buying snowmobiles, it's easy to cover up a burnt piston or scarred cylinder wall in 2 strokes. Get a good one, that way it will have quality lighting and fiber optics. The one i used had stainless braiding on the scope lead. It saved my ass more than a few times, well worth the purchase price in your line of work.