North American Turbocoupe Organization



oil leak
justinef'npartlo Offline
Junior Member
#1
two days ago i looked under my car and there was a few oil spots...i checked the oil and it was low so i put a quart of oil in the next day there was a large puddle about a foot in diameter. if anyone could let me know what could be leaking it would be greatly appreciated...... oh its an 88 tc if that matters
stock 1988 T Bird Turbo Coupe, 5speed, Dark blue, Grey interior.
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84TBirdTurbo42 Offline
Senior Member
#2
rear main seal, valve cover gasket. oil line, oil filter, drain plug.... theres a million places it can leak oil.
Chris Perry
1984 Ford Thunderbird Turbo Coupe. Dead, NY rot killed her
1986 Thunderbird shell, swapping parts from the 84.
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Pete D Offline
Administrator
#3
It might help to get it up on a lift and start looking. Like Chris said there are lots of possibilities. Sounds like you have a significant leak so don't ignore fixing it and very regularly
check the oil level.
Pete Dunham


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justinef'npartlo Offline
Junior Member
#4
well i checked it a little bit ago and the leaking slowed down a lot, its back to the few spots here and there
stock 1988 T Bird Turbo Coupe, 5speed, Dark blue, Grey interior.
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Cracker137 Offline
Member
#5
Make sure it isnt comming from the oil level sensor, I just took mne out and put some teflon on it and boom no more oild leak. But like 84TBirdTurbo42 said it can leak from many diffrent places.....
1987 Thunderbird TC
-T3 Turbo
-K&N
-3G 130 Amp
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zbird Offline
Posting Freak
#6
Could be from the middle of the sensor and teflon will not stop it. They are notorious for leaking from the center around the sensor when they age. The sensor is still available from Ford. Try cleaning any oil off the engine then running it and rechecking for the culprit.
Dom Z
88 T/C med grey. 140 MPH Speedo, Kirban FPR, Gillis valve,Tripminder, K&N.
87 T/C Silver, Auto (project Daily driver)
99 F150 4x4
14 Ford Escape 2.0L Turbo
IF YOU DRIVE A FORD YOU DON'T NEED A GOODWRENCH!!
88 T/C http://www.youtube.com/watch?v=ZihO_D1FLCE
87 Silver http://www.youtube.com/watch?v=_dVU5axnb...ature=plcp
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RC Martin Offline
Posting Freak
#7
The worst intermittent leak I had was the seal around the oil cooler. It would leak little more than a couple drips one day, or let out a steady stream other days. 23 years (that's how old it was at the time) is a long time for a rubber ring that gets heated and cooled, and holds out oil...
Thunderbird Turbo Coupe, Bright Canyon Red TuTone, Desert Tan Interior; 1 of 7 in this combo in 1984 according to Marti.  1 of 13,361 TCs in 84.
   Rebuilt, 3-Angle Valve Job, SYB37 "OE/Small" Slider Cam
   Full 3" Stinger Exhaust to Flowmaster 40, Gnari FMIC/Recirc/BPV, MBC @ 18psi, RF-E6 Manifold, Remote-Mount TFI, PC1 and Flowed 35# Injectors, Inline Walboro 255HP, Kirban AFPR
   Rebuilt Suspension -- KYB & Energy Suspension
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justinef'npartlo Offline
Junior Member
#8
thanks for the info guys
stock 1988 T Bird Turbo Coupe, 5speed, Dark blue, Grey interior.
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Jeff K Offline
Administrator
#9
Quote:Originally posted by Cracker137:
Make sure it isnt comming from the oil level sensor, I just took mne out and put some teflon on it and boom no more oild leak. But like 84TBirdTurbo42 said it can leak from many diffrent places.....
Good idea... the oil level sensors are well known for both leake from the sensor itself and leaks from the gasket.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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justinef'npartlo Offline
Junior Member
#10
well the leak seems to be because the crankcase was clogged causing pressure that blew out the rear main seal and pretty much all the other seals and gaskets on the engine......
stock 1988 T Bird Turbo Coupe, 5speed, Dark blue, Grey interior.
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