Hey guys, here goes.

My cars original motor spun a crank bearing due to an over rev. I purchased another USED motor off a fellow member here on s2ki. Both motors are f20c. Motor is installed in the car, and here are the symptoms. All cylinders read between 150-165psi on compression check. Checked spark plugs and they are extremely fouled, looks as if the injectors are just DUMPING fuel. Also, car sounds and runs like it is almost running on two cylinders, missing horribly. It also has a completely sporadic knocking/clanking noise coming from what sounds like the head/valve cover area. Comes and goes as it pleases, almost sounds like something is just rattling freely around inside. If anyone has any insight on this issue it will be greatly appreciated. My mechanic will be taking the valve cover off today and will get back to me if he finds anything out of the ordinary, at that time I will update this post. Any advice is appreciated. Thank you.

Brendan

 

Have him check valve clearances while he has the cover off.

 

Update: let the car warm up slightly, idle seemed to straighten out tremendously, almost in good sounding order, MINUS what still sounds to be like what could possibly be a dowel or something inside the motor? Anyways, was reading about 40 psi oil pressure when running, until the motor temperature started rising, causing viscosity of oil to thin, and found it's way through somewhere because oil pressure dropped to as low as 5 psi. My mechanic will be taking the motor out and digging it apart sometime soon. Any ideas or help is greatly appreciated.

NOTE: Told him to check valves and valve clearances, all checked out good.

 

Does the noise from within the engine increase with the revs?

Evan @ Forged

 

I apologize for text typing earlier, I send like 5000 text a month and that's the only way I remember how to write now i guess, wow. My mechanic is hauling ass on this car. I dropped it off with him at 10 pm, it's now 1:00 am and he has found my motor is missing a key piece. THE NUMBER 2 ROD BEARING! I'm assuming he has the engine already out of the car to have gotten this far into it, I understand he could have maybe just took the pan off and peek up in it? I'm unsure, but either way I'm pleased with his performance. He is continuing to tear it down tomorrow and see what damage has been caused because of this. He has a inkling the noise was the piston slapping the head .... FACEPALM.

 

Id be kinda pissed if i spent money on a motor, used to rebuilt..and it was missing critical internal parts. Just sayin...

 

Yeah I'm pissed but I can't get a hold of the user he isn't even on here any more and I have no documentation for the engine as this was a year and half two years ago. Thank you for the concern though.