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Re: More info, please Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Wed, 21 Jan 2009 09:37:51
In Reply to: Re: More info, please, Leanne Cota, Wed, 21 Jan 2009 06:46:59 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Horrible clicking noises, grinding, engine stopping - that would be a sign of low oil pressure. Starting right up with no noise, not so much.
Restart with nasty noises and the oil pressure light, that's a sign of no oil pressure.
I guess it is possible you had low oil pressure - not low enough to turn on the dash light, but enough to make the lower end unhappy and the valve lifters even less happy. If the valves aren't actuating (they need oil), the engine would stop. Why it restarted and was quiet is a mystery - things like this don't 'heal'.
This doesn't sound good. I'd take a flashlight and look down at the bottom-most pulley on the engine - the crank pulley. Look for signs of oil or metal shavings. Look at the belt on the pulley - does it look straight? Look at the belt as it rides over other pulleys (don't have to start the car) - is the belt centered on those pulleys, or is it a little to one side?
The oil pump is right behind that lowest (main crank) pulley. If the pulley were to come apart, it could be chewing into the face of the oil pump. That would also explain the noises.
Clatter is the sound of the valve lifters not getting enough oil. The crank bearings will be damaged by lack of oil, but you probably won't hear them until they fail -either the engine stops and never turns over, or the bearings break (not fun, either).
From a distance, yes, it sounds like an oil pressure problem. It sounds like it started as low oil pressure, eventually dropping to nothing. It could be sludge - a partial blockage, followed by complete blockage. It could be the regulating valve. It could be the pump lost a piece, dropping the pressure ,and then the lost piece chewed out enough of the pump to completely lose pressure.
Pull the fuel pump fuse. From now on, you don't want the car starting during troubleshooting. Cranking is good enough.
The next steps depend on how much you want to get into it yourself, or to talk to a shop. Dropping the oil pan to check for oil pickup blockages and bearing damage would be one thing. Pulling the oil pump to look for damage would be another. Depending on the failure, there may be other damage in the engine. Low oil pressure takes its toll on the crank bearings. If something came apart, there may be debris in the oil system.
If you had just gotten an oil light, with no noises, no hot running, just otherwise normal driving, I'd suspect the light but check the pressure. All the clatter and grinding is the sign of no oil pressure, and that's not a happy thing. Sorry.
posted by 192.249....
, Tue, 20 Jan 2009 18:29:05, Wed, 21 Jan 2009 09:37:51 <-- Viewing This Message
, Tue, 20 Jan 2009 05:16:00, Tue, 20 Jan 2009 06:47:26
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