Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
Hello, I'd be happy to help! It sounds like you have an internal engine problem, likely a plugged oil passsage. There is either sludge in the engine somewhere or a bearing is failing, but you would have to disassemble the engine to determine the cause. Have you tried running any kind of flush through the engine? Sometimes that will help to clear passages.
He couldn't have checked the engine oil passages unless he disassembled the engine, which is very extensive and would have been around 1500$ just in labor. To clean with flush you can you buy any "engine flush" and just add it to the oil and run it for a few minutes, each one has directions so just follow the time on the one that you buy, then with most they'll have you change the oil afterwards. Alternatively you can get a quart of transmission fluid and add it to the oil. The bearings I'm talking about could be crankshaft, camshaft, or connecting rod bearings.
Is the engine back together and running .
Okay you first need to check the oil pressure with a mechanical test gauge .
at the oil pressure sensor port.
Disconnect the ignition first so thew engine does not start, and check what pressure you are getting with just cranking over the engine for n10 seconds .
Let me know what your Mech finds so i can advise you further with this issue..