i have not been able to figure this out. this 3.3 was running perfectly, well maintained and suddenly i heard what sounded like a fairly loud tappet like knock. without tearing this machine open, i thought it was possibly a valve lifter. also, shortly thereafter, while on the highway my oil pressure gage suddenly dropped to zero. i have changed the oil pump (although there was nothing wrong with the old one, and installled 2 different aftermarket oil sending units. the wire that goes into the plug for the sending unit seems to be "stretched" a bit, but otherwise appears intact. the engine also sounds like oil is not getting to the top of the engine, but i can't be sure. i'm afraid to fire it up as it's been sitting for some time now. i suspect a clogged oil port or a bad main bearing, but it could as well be something really simple and inexpensive. i'm not a true mechanic. any thoughts would be helpful. i took it once to a mitsubishi dealership, where they listened with a stethoscope, and they merely said it was a "weak engine". I suspect it's not, thanks, kevin c
Oct 19, 2007 at 2:22 AM
