Oil loss in my red 7m na

batmmannn · 07-05-2010, 07:24 AM

OK Guys I have no oil leaks in the front or top of the motor, no dripping, no evidence of leaks in those areas. I have to assume that I am blowing out of the rear main now. Or possibly the drain plug will look at it tomorrow.

Found my car with over 3 quarts low, after noticing the oil pressure guage was dropping to nothing. Only get some blue smoke after back pressure builds down a long hill and then a nice puff barely visible at the end of the hill on take off.

That would be kind of expensive as I am looking at 4 quarts loss at about 500 miles of driving. This stuff aint cheap.

Overheated today using the AC and not knowing I was low on oil and not fully burping the car after the radiator hose replacement and AC repair.

Looks like I will be watching the oil closely now till I decide where I am losing it. I suspect I will have to drop the trans and replace the main seal.
Get a new drain plug and gasket. Might as well throw a new clutch plate in there as well when I do it.

Can the trans be dropped easily or is it better just to pull the motor with trans attached?

AC IS WORKING AWESOME! My first AC Repair and recharge and I guess I got it right. Can the motor be pulled without opening the compressor lines? I would think it could but imagine it would be tight.

Oil pressure went back above 20 at 2,000 rmp after refill.
Comments would be appreciated. Thanks

cre · 07-05-2010, 01:02 PM

Oil out the exhaust = internal leak, not external... Bad rings, turbo seals, BHG, cracked head, valve stem seals, etc.

Green7mgte · 07-05-2010, 01:51 PM

burping your rad is a great idea don't get me wrong.. but its not going to sufficiently ruin anything in a matter of moments if there is an air bubble or two trapped in there.. and they will eventually make their way out anyhow.

wstanek · 07-05-2010, 03:20 PM

im gunna have to go with the rings valve steam seals or somthing of that nature.... didnt u just rebuild that motor? mabey im thinking of somone else... u posted a video on youtube right?????

batmmannn · 07-05-2010, 04:12 PM

No I did the valve covers, front crank seal, timing belt. No internal rebuild. I am not blowing blue smoke except after a long coast down a 1 mile hill with it in gear and only for an instant after during take off. I don't have a Turbo or a blown head gasket that test was already done. Drove it to town last night after burping it with the AC on high about 16 miles and it did not overheat after burping. Losing oil from the rear crank seal I think. Probably do need new valve seals though. No pools or drips of oil on my driveway but the rear trans has oil all over it. The plugs would show oil fouling if I was burning a lot of oil correct?

wstanek · 07-05-2010, 04:41 PM

yeah true if it was burnin oil you would have a lot of shit on the plugs. how much dose it burn again. im in alganquin park on holidays =D

07-05-2010, 07:24 AM	#1
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	Oil loss in my red 7m na OK Guys I have no oil leaks in the front or top of the motor, no dripping, no evidence of leaks in those areas. I have to assume that I am blowing out of the rear main now. Or possibly the drain plug will look at it tomorrow. Found my car with over 3 quarts low, after noticing the oil pressure guage was dropping to nothing. Only get some blue smoke after back pressure builds down a long hill and then a nice puff barely visible at the end of the hill on take off. That would be kind of expensive as I am looking at 4 quarts loss at about 500 miles of driving. This stuff aint cheap. Overheated today using the AC and not knowing I was low on oil and not fully burping the car after the radiator hose replacement and AC repair. Looks like I will be watching the oil closely now till I decide where I am losing it. I suspect I will have to drop the trans and replace the main seal. Get a new drain plug and gasket. Might as well throw a new clutch plate in there as well when I do it. Can the trans be dropped easily or is it better just to pull the motor with trans attached? AC IS WORKING AWESOME! My first AC Repair and recharge and I guess I got it right. Can the motor be pulled without opening the compressor lines? I would think it could but imagine it would be tight. Oil pressure went back above 20 at 2,000 rmp after refill. Comments would be appreciated. Thanks __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile! Last edited by batmmannn; 07-05-2010 at 07:32 AM.

07-05-2010, 01:02 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Oil out the exhaust = internal leak, not external... Bad rings, turbo seals, BHG, cracked head, valve stem seals, etc. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

07-05-2010, 01:51 PM	#3
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	burping your rad is a great idea don't get me wrong.. but its not going to sufficiently ruin anything in a matter of moments if there is an air bubble or two trapped in there.. and they will eventually make their way out anyhow. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

07-05-2010, 03:20 PM	#4
wstanek 3" Exhaust Join Date: Apr 2010 Location: Stoney Creek Posts: 178	im gunna have to go with the rings valve steam seals or somthing of that nature.... didnt u just rebuild that motor? mabey im thinking of somone else... u posted a video on youtube right????? __________________ 1987 N/A 7MGE manual transmission slight rod knock never driven it yet... legally~

07-05-2010, 04:12 PM	#5
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	No rebuild No I did the valve covers, front crank seal, timing belt. No internal rebuild. I am not blowing blue smoke except after a long coast down a 1 mile hill with it in gear and only for an instant after during take off. I don't have a Turbo or a blown head gasket that test was already done. Drove it to town last night after burping it with the AC on high about 16 miles and it did not overheat after burping. Losing oil from the rear crank seal I think. Probably do need new valve seals though. No pools or drips of oil on my driveway but the rear trans has oil all over it. The plugs would show oil fouling if I was burning a lot of oil correct? __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile! Last edited by batmmannn; 07-05-2010 at 04:45 PM.

07-05-2010, 04:41 PM	#6
wstanek 3" Exhaust Join Date: Apr 2010 Location: Stoney Creek Posts: 178	yeah true if it was burnin oil you would have a lot of shit on the plugs. how much dose it burn again. im in alganquin park on holidays =D __________________ 1987 N/A 7MGE manual transmission slight rod knock never driven it yet... legally~

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