92 Stealth DOHC revival - 3000GT/Stealth International Message Center
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Old 02-26-2013, 05:45 PM   #1 (permalink)
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Default 92 Stealth DOHC revival

Its at about 146,000ml, when it did run...it sounded good for a few mins then turns horrible and then it dies. Ive changed the plugs, wires, coils...but started thinking about it starving. Since allot of people say its common for the oil pump failure around that many miles, I started thinking oil pump. Question is, it blows what looks like chocolate milk into the airduct from the pcv valve...(guessing its finally given in), am I on the right track? Also I have NO ideal what im looking at as for spun bearrings, and all the lower internals. How would I tell with it all still together or should I just go ahead and rebuild from the ground up?
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Old 02-27-2013, 03:57 PM   #2 (permalink)
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Default Re: 92 Stealth DOHC revival

Well the oil pump should have been replaced at 120k because like you said they do fail. But lets back up a bit. Did you replace the things you mentioned before or after it quit running? Also if it spun a rod bearing it would be a very loud knocking sound. You can check to see if it has spun a bearing if you pull the oil pan and wiggle the rods. If you do that, look at the oil that comes out of the pan when you drain it. Does it have any metal flakes? Have you checked the oil level recently? What does the oil look like? Does the engine still turn over? Does it do it fast or slow? Start there and report back.
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Old 02-28-2013, 10:27 PM   #3 (permalink)
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Default Re: 92 Stealth DOHC revival

Quote:
Originally Posted by sweet91 View Post
Well the oil pump should have been replaced at 120k because like you said they do fail. But lets back up a bit. Did you replace the things you mentioned before or after it quit running? Also if it spun a rod bearing it would be a very loud knocking sound. You can check to see if it has spun a bearing if you pull the oil pan and wiggle the rods. If you do that, look at the oil that comes out of the pan when you drain it. Does it have any metal flakes? Have you checked the oil level recently? What does the oil look like? Does the engine still turn over? Does it do it fast or slow? Start there and report back.
Take an oil sample from the pan. Sounds like water in the oil. Head gasket is my bet.

Check the timing belt to make sure it is taught, not dry rotting, and all the marks are aligned properly.

If all is okay, and you do not have definitive documentation as to when it was last changed, do a 120K service too.
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