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Mike
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« Reply #30 on: November 23, 2009, 11:52:40 AM » |
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Well, since I bought the car in August (it had an oil change shortly before I bought it) its lost exactly one quart of oil, and it happened in the course of a week. Its strange to me. I'm changing the oil when I get home from school today probably.
Post Merge: November 23, 2009, 06:20:28 PM
Well I changed it. Took me 20 minutes (and a half a can of PB Blaster) just to get the damn drain plug out. Whoever did it last time put it on way too fucking tight. Seems like it runs smoother now actually.
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DiscoStudd
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« Reply #31 on: November 24, 2009, 12:57:20 AM » |
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My 95 GP "mysteriously" lost a quart of oil every couple of weeks. Turns out the LIM gasket was on its way out. Luckily for me, I traded the car and got more for it in trade than I paid for it!
Might want to consider changing that lower intake gasket soon...
Shit, now that I think of it, it was throwing an EGR trouble code. Had a friend of a friend who hooked it up to his Matco (or it might've been a Snap On, I don't remember) scanner, and it revealed that the EGR code and the loss of oil indicated a trashed LIM gasket. Or something like that, that's how I remember it... |
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 Kevin B.2004 Chevy Impala 1993 Chevy S-10 |
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Mike
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« Reply #32 on: December 16, 2009, 06:22:57 PM » |
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I was talking to a friend in school today (though he's my age he's been racing and working on cars since he was like 12) and when I described my issue, he said it sounds more like the upper plenum gasket. Make any sense to you?
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Prospeeder
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« Reply #33 on: December 16, 2009, 06:30:16 PM » |
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whats it doin
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1990 Pontiac Turbo Grand Prix 80k 1990 Pontiac 6000 LE 3.1 V6 270k 1988 Buick Regal Limited 2.8 70k  |
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Mike
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« Reply #34 on: December 16, 2009, 06:33:34 PM » |
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SES light every once in a while, throwing an EGR code. Randomly and sporadically missing oil (didn't lose any in a month, then lost a quart on a week, has been fine since). Somewhat crappy gas mileage (13-15 mpg, usually closer to 13, but that's all city driving with a top speed of maybe 50-52ish) and a random smell of burning oil.
Post Merge: December 16, 2009, 06:35:51 PM
It was idling high and surging when I first bought the car, replaced the TPS (upon taking it off, the old one apparently lost all its spring and was loaded with oily crud) and its been idling normal since (800-900 normally, 1200 on a cold start until it warms up)
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Prospeeder
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« Reply #35 on: December 16, 2009, 06:38:28 PM » |
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Well if u getting egr codes and its getting poor mileage take the egr off and clean it and the passage, then if it still keeps coming back replace the egr. No plenum gaskets gonna cause an EGR code sorry, the perameters for an EGR code to be set is pretty tricky. Iv been fighting the Digital EGR on my 3.1 in my 6000 since i got the car. that mileage is worse than my Turbo Grand Prix with my led foot. Replaced the oxygen sensor latley? Got AC delco plugs and good set of wires on it?
As far as losing oil look at the engine, are the front and rear valve covers clean and the manifolds underthem are clean not caked with fried on oil, look back under the throttle body, is the oil pump drive plug wet? Look at the crankshaft pully, is it slinging up any oil or making a big mess like the front cover seal is bad? Or maybe you didnt put a new drain plug gasket when you changed the oil? Is the oil pan all nasty looking like the gasket could be leaking? Also, a failed pcv system will cause the engine to ingest oil, you wont see it, but the intake will have exsessive oil in it. seepage from the Lower intake gaskets is fairly normal but full on oil leaking is not, check both ends of the manifold, as just RTV sealant is what seals there and could be prone to oil leakage. Hope thats a start for you...
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1990 Pontiac Turbo Grand Prix 80k 1990 Pontiac 6000 LE 3.1 V6 270k 1988 Buick Regal Limited 2.8 70k |
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Mike
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« Reply #36 on: December 16, 2009, 06:42:56 PM » |
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It doesn't take an expert, my first thought is that it is, indeed, an EGR failure. But on DiscoStudd's recommendation, I am looking into a LIM gasket failure. I do have oil built up on the cross member under the engine. Thats the only place I have oil built up underneath. Pan is clean, etc. And no, I didn't change the gasket on the drain plug. The plug looked to be new and in pretty good shape. Why replace something if its not broken or showing any signs of deterioration? When the plug leaks or gets fawked up when being removed, then I'll replace it and the gasket.
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Prospeeder
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« Reply #37 on: December 16, 2009, 06:49:47 PM » |
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i think all that crossmember shit is from chaning the filter, it gets everywhere. look down the back of the engine and transmission, the disty drive plug leaks usually from the back unseen. As far as the drain plug goes, i do it every few oil changes, i hate the little drip from the plug and it costs like 50 cents extra when im in for the oil and filter. LIMs typicly just dump coolant in the oil, or externally leak coolant, not to say it isnt possibly for them to leak oil, but at a quart a week, you would easily be able to look at where the lower intake meets the heads and see it leaking. Not too hard to do them, takes some work but nothing over the top, i had the heads off my 6000 and back on driving in 2 nights, thats twice the work just the lim is
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1990 Pontiac Turbo Grand Prix 80k 1990 Pontiac 6000 LE 3.1 V6 270k 1988 Buick Regal Limited 2.8 70k |
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Mike
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« Reply #38 on: December 16, 2009, 06:55:49 PM » |
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'Twas my first oil change since I bought the car. Don't know for sure how recently the plug was changed. I've only owned the car since the end of August. As for anything else leaking, don't know. And I'll probably be waiting until spring to find out. There is no way that I'm crawling around under my car in 20 degree temperatures if I don't have to  . I check all of my fluids weekly (Sundays, usually). The oil went something like this, par example: Week 1: full Week 2: full Week 3: full Week 4: full Week 5: full Week 6: a quart low Week 7: full Week 8: full Week 9: full catch my drift? It was random. |
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SofaKingWeToddDid
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« Reply #39 on: December 16, 2009, 11:07:26 PM » |
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depends how soon you shut the car off too, and how long you were running it for first too. it takes a while for the oil to drop down to the pan, especially in a DOHC (like mine) if i shut it off, walk to the front and check it, its low. guaranteed. wait another 30 seconds. and its right where it should be.
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Mike
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« Reply #40 on: December 17, 2009, 11:41:37 AM » |
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When I say full... i mean at the full line, not above, not below. When I check my fluids its usually after its been sitting for about 3 hours.
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SofaKingWeToddDid
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« Reply #41 on: December 17, 2009, 05:49:10 PM » |
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well where else would 'full' be? at the bottom of the acceptable range?? noooooo full its tits up to the top full. *not over filled though.
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Topic: Synthetic (Read 1439 times)
