mysterious oil leak.. need advice

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 24, 2005

#1

• Apr 24, 2005

• #1

i got my new motor up to operating temp, and it starts to piss oil out the back, not like a drip every second. its more like a nice puddle within a minute. we thought maybe we kinked the oil pan gasket (canton 7 qt. pan) when fliping the drive shaft around on the oil pump (damn shop put it in upside down) so we undid all the bolts on the pan and re-did the torque sequence. and once it got up to temp it starts to piss out again. would an oil pan gasket cause it to leak alot or maybe the rear main seal? i don't know how much a rear main seal would leak but this is a nice puddle within a minute if you leave it running. i don't know whether or not a Rear main would leak aolt or whether its a driping kinda of leak. on the sheild the goes between the tranny ad engine it seems to be coming from the engine side if tht makes a difference. also it only leaks with the motor runing

any ideas. BTW the top of the engine is bone dry so its not the intake or valve covers

 

gregpro50

Member

Sep 11, 2004

140

0

16

Binghamton NY

Apr 24, 2005

#2

• Apr 24, 2005

• #2

Definitely the pan gasket. Something may have slipped when you put it back together. Did you use the one-piece pan gasket ?? The rear main would seep but I have never seen them make a huge puddle. Better to pull the pan off first then to yank the whole tranny and find out it was the pan all along...

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 24, 2005

#3

• Apr 24, 2005

• #3

ya it was the felpro one peice pan gasket i was extra careful putting it on when the motor was on the stand and put silicon on the corners but when i had to go and flip the oil pump driveshaft around we did it all under the car so we may have gotten the gasket kinked. would the pan gasket leak bad only when its running? cuase i always thought it would leak all the time and it didn't leak when we were warming th motor up. i have never had experience with Rear main seals so i don't know what it looks like when they go plus its brand new

 

fox racer

Member

Jun 22, 2004

577

0

16

Staten Island, NYC

Apr 24, 2005

#4

• Apr 24, 2005

• #4

who is that in your avata???

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 24, 2005

#5

• Apr 24, 2005

• #5

my GF

 

gregpro50

Member

Sep 11, 2004

140

0

16

Binghamton NY

Apr 24, 2005

#6

• Apr 24, 2005

• #6

Either one would only really leak when it is running. Is the oil running down the front of the dust shield or behind it? The pan gasket tends to leak down the front and the rear main will leak down behind it.

 

Stang8URMPRT

Active Member

Dec 28, 2003

1,100

1

38

Daytona Beach, FL

Apr 24, 2005

#7

• Apr 24, 2005

• #7

Might be an oil plug in the back of the block... Pics would be helpful.

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 24, 2005

#8

• Apr 24, 2005

• #8

it is on the front of the dust sheild, i could take some pics but even when your under there is hard to see cuase the oil is still clean cause the motor is brand new so it still looks kinda clear... where is the oil plug on the back of the block roughly and can i get at it with motor and tranny in?

 

gregpro50

Member

Sep 11, 2004

140

0

16

Binghamton NY

Apr 24, 2005

#9

• Apr 24, 2005

• #9

It wouldnt be an oil plug because it would leak down inside the bell housing. You would have to pull the tranny and flywheel out to get to it. It really sounds like its coming from the rear of the pan gasket. Also, some of these aftermarket pans dont line the gaskets up quite right with the block and it makes them very prone to having the gasket slide in or out an the curved areas of the front and rear. Not going to be fun changing the gasket on a 7qt pan...

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 24, 2005

#10

• Apr 24, 2005

• #10

i can get it on a hoist next saturday, so hopefully it wont be too bad. i guess i will have to tow it to the hoist so i don't have to run the motor and risk soaking my clutch or loosing alot of oil. hopefully i can get it to the closer of the two hoist i can use. one is in a ford dealership so that would be realy nice but its farther away

 

DMAN302

My mom says thanks for the pearl necklace.

Nov 8, 2003

2,120

2

59

windsor, Canada

Apr 24, 2005

#11

• Apr 24, 2005

• #11

Check your PCV didn't pop out..and check your lower intake rear seal, lastly check the valve covers..could be loose. I have a frigin rear main leak on my 200 mile motor..but just a VERY little one..i can't see that being your problem if your dropping that much oil.

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 24, 2005

#12

• Apr 24, 2005

• #12

i hope its the pan, but the wierd part is it only leaks when it warms up, not when cooled down

 

z9_87

New Member

Apr 16, 2004

332

0

0

Urbana, IL

Apr 24, 2005

#13

• Apr 24, 2005

• #13

This doesn't sound to be you're problem, but when I put my motor back together I forgot to put the oil dpistick and tube back in. It leaked a good bit under a load onto the oilpan, dustcover and headers. Just a suggestion.

 

2

2002BLGT

Well-Known Member

Dec 18, 2003

2,945

4

59

Bedford VA

Apr 25, 2005

#14

• Apr 25, 2005

• #14

back intake gasket !!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 25, 2005

#15

• Apr 25, 2005

• #15

2002BLGT said:

back intake gasket !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Click to expand...

............is dry as a bone

 

gregpro50

Member

Sep 11, 2004

140

0

16

Binghamton NY

Apr 25, 2005

#16

• Apr 25, 2005

• #16

When the car isnt running all the oil is sitting in the bottom of the pan. When it runs oil is running against the gasket so it leaks out. Park your car nose up on an incline or jack the front up, I'd bet it would come pouring out then.

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 25, 2005

#17

• Apr 25, 2005

• #17

we had it up on jackstands and it didn't leak..... but i guess we will see on saturday, my buddy who works at ford got me some of this flouecent (sp?) stuff that you pour in the oil to see where its leaking and you hold up a UV light. i got use of a hoist on saturday so we're just gonna yank the tranny and check everything back there and get everything 100% right

 

vristang

15 Year Member

Mar 31, 2005

4,933

101

124

Seattle

Apr 25, 2005

#18

• Apr 25, 2005

• #18

I actually agree with Stang8URMPRT.

If it is leaking as bad as you say it is, I would think you are pushing pressurized oil out of the block. If the shop that built this motor could put a oil shaft in upside down, they sure coud forget to torque down a oil galley plug.

Sorry to hear your having more trouble. Buy a Lotto ticket, your luck has to get better some time!

 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan

Jul 4, 2004

1

0

1

WPG/MB/CA

Apr 25, 2005

#19

• Apr 25, 2005

• #19

sucks cause i got it assembled cause i didn't rerally trust myself to do it, now i am just redoing everything they did wrong. crossing my fingers that it dodn't soak my clutch cause that is brand new and i don't wanna go buy a new disk