North American Turbocoupe Organization



chasing oil leak
509eddels Offline
Member
#1
I know its going to be hard for you guys to help diagnose an oil leak when you cant actually see the car. but i have an oil leak thats about a quart give or take a week. its on the driver side of the car on the firewall side of the intake there is oil as high as the fuel rail and then all the way down the bay is soaked. i also have a slight brake leak and i know the brake system is right in that area but the liquid really seems to be oil. so is there any areas that are prone to leaking that i should check. ive been chasing this leak for a while now and would love to pull out of my driveway with no black stains or cat litter under my car. thanks for the help.
88 5sp TC-cone filter, gillis, walbro 255, and LUK stock replacement clutch, other than that stock
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Not B Anymore Offline
Administrator
#2
Sounds possible that's it's coming from the dipstick tube. It's in the right area at least. And with that much oil... Have you noticed that the dipstick has come out at all? Check your PCV Valve.
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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Pete D Offline
Administrator
#3
Check the oil pressure sending unit and check to crack in the oil supply line to the turbo under the sending unit
Pete Dunham


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RC Martin Offline
Posting Freak
#4
VC gasket blowout on the back side?
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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HCOR Offline
Member
#5
LOL I have that same leak it sound like on my Blue 86, nre ford ranger valve cover gasket, and still can't locate the dang thing, now i know why I trailer it,lol!
only memories
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BJL Offline
Moderator
#6
i had a very similar leak for 4 years.. it was just always covered.. about a quart a month. i swore t was rear main seal.. but on Monday i got worse. lost 2 quarts in 30mins.
at that left rear corner of the engine is the oil feed lien to the turbo. i could see it dripping of it. i replaced this line and no oil leaks at all.. i cant see the crack in the line it self. but my driveway is loving it. i used to leak a 4in round puddle every night.. now its clean.
it easiest to change this like if you take the upper manifold off and the fuel rail.

clean off the engine using a degreaser and pressure washer and run it and see where it starts from.
clean it and run it an hour (run some errands or go fro a cruise) and check back and see it you notice it leaking.
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
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Paulie Offline
Banned
#7
Gentlemen the turbo feed line is stainless and has a nasty habit of cracking at the 45* inverted flair face. I have found many that did this. Always check the face of the inverted flair for cracks. They rarely crack on the long sides. Thank you
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509eddels Offline
Member
#8
so i feel like what was leaking..the dipstick. i also have those 245/50's on now. they look pretty sick. a little wide in the front. but alot better then what the PO had on there.
88 5sp TC-cone filter, gillis, walbro 255, and LUK stock replacement clutch, other than that stock
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