Hey guys, I have a bad knock in my engine I either think it is an oil pressure issue or something is loose. It is a 2002 ecotec with 200 , 000km on it. The noise is horrible and bad enough I will not drive it....any ideas? And what would be the easiest way to check the oil pressure? Thanks
Sounds like checking the oil pressure isn't going to help save it, sounds like you may have a spun bearing which would cause rod knock, only fixable by rebuilding motor if you can or replacing it altogether.
Thanks for the response.....a spun bearing is bad eh? I have a motor from a wrecker and was trying to get the most out of the engine have....I guess I should drop the new one in then
When the car is ideling, if it's a lower pitch knocking sound (about twice a second), you most lickley have thrown a rod, if it's a faster higher pitched clicking or tapping sound, its in the valvetrain. Valvetrain issues can sometimes be easely fixed, but if it's a rod knocking, your engine will have to be rebuilt (pulling the pistons out of the engine and everything). If you have a thrown rod, it's usually cheaper to just have the engine replaced (less labor). Thats what I had to do when my dad forgot to put oil in my car after changing it and went for a drive.
Pull your dipstick and look at the oil, does it have a metalic sparkle to it, does it smell burt, is there any oil in the crankcase, any oil pressure warning lights on?
If it's knocking, odds are the damage has already been done and no amount of oil is going to save it. Maybe switch to a thick heavy-duty (15W-40 or similar) oil to quiet the noise until you can rebuilt/replace the motor.
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2000 Cavalier Coupe, 138k miles, 2.2 Auto, Silver (alive)
1999 Cavalier Sedan, 237k miles, 2.2 Auto, White (dead)
Anduril wrote:If it's knocking, odds are the damage has already been done and no amount of oil is going to save it. Maybe switch to a thick heavy-duty (15W-40 or similar) oil to quiet the noise until you can rebuilt/replace the motor.
Heh i had a good laugh with that.When the engine went in my dads truck we put gear oil in it to make it stfu untill we got it replaced we did that for about 2 months.]
My car--->
http://www.cardomain.com/ride/2569452
So would 15w40 be the oil to put in?
I wouldn't mess with the oil or anything until you know what the problem actually is. Newer engines have tighter bearing clearances, so if you put in too heavy an oil if the bearings aren't toast, you're starving them of oil. Guess what that does?
As far as diagnosing, a rod bearing or timing chain should quiet under load, whereas an exhaust leak would be worse. To pinpoint the location, put some tubing to your ear and probe with the other end. A valve train noise, timing chain, or exhaust leak should be easy to locate with this method. A rod would be harder, although the noise should transmit better through the block than the rest of the engine
yea buddy kinna sounds like wat happened to mine...spin bearings and tore up the crank and stuff always. had a bad oil pump and was not pumping oil so im in the process now of pulling the motor and have plans for the 2.3 oil pump swap and boost ; )
"sometimes the respect is more important..."
