Oil leak somewhere....?
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Oil leak somewhere....?
Ok, I still have an oil leak. I did get the valve covers to quit leaking though. I am noticing a slow oil drip off of the starter, and oil dripping off the trans dust cover too.
The engine is not old and hasn't seen more than 600 miles yet. I do not feel oil behind the valve covers. I do not feel oil behind the intake or on top off the bell housing either.
Any thoughts or hints...
The engine is not old and hasn't seen more than 600 miles yet. I do not feel oil behind the valve covers. I do not feel oil behind the intake or on top off the bell housing either.
Any thoughts or hints...
Member

Joined: Apr 2005
Posts: 329
Likes: 0
From: tasmania australia
Car: 1985 z28 camaro
Engine: 305 lg4,edelbrock,3"air cleaner.k&n
Transmission: turbo 700r4 w/b&m megashifter
Axle/Gears: Stock.
Did you use a new oil pressure sender.I had a oil leak at the sender,not where it screws into the block,but it was actually leaking through the sender body and dripping off the electrical connector and then spraying under the car when running.Might be worth a look.
Alicat.
P.S Have a look where the dipstick tube goes into the block as well.If you have the tube on the right side and it's blowing out of there you will see it on the starter.
Alicat.
P.S Have a look where the dipstick tube goes into the block as well.If you have the tube on the right side and it's blowing out of there you will see it on the starter.
Last edited by alicat; Dec 2, 2006 at 06:08 PM.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
I am using the old pressure sensor and the old dip stick. Why didn't I think of the dip stick before???
???? I will check that out as soon as it warms up a bit, little chilly this morning.
As for the pressure sensor I will give that a look too, thanks guys!
And P.S., yes I did remove the smog stuff.
???? I will check that out as soon as it warms up a bit, little chilly this morning.As for the pressure sensor I will give that a look too, thanks guys!
And P.S., yes I did remove the smog stuff.
Joined: Aug 2005
Posts: 1,366
Likes: 1
From: louisville, ky
Axle/Gears: '01 3.42 10 bolt
what kind of oil pan gasket did you use? i had an oil leak that i eventually tracked down to the oil pan gasket. it was one of those blue reusable ones
from fel-pro that you are not supposed to use rtv on. needless to say, i ended up putting rtv on it.
from fel-pro that you are not supposed to use rtv on. needless to say, i ended up putting rtv on it. Joined: Sep 2005
Posts: 27,933
Likes: 2,454
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
And P.S., yes I did remove the smog stuff.
When you hacked it off, one of the bolts you left out, goes right into the crankcase. It's the upper one of the 2 on the front of the block, pass side, down low; where the bracket that held the smog pump on used to be.
Put a short bolt with a drop of silicone on the threads in that bolt hole.
The lower one isn't a problem; only the upper one.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Well then, there's your oil leak. Same as everybody else that hacks their car up that way and then discovers that they now have a mystery oil leak on the pass side of their motor.
When you hacked it off, one of the bolts you left out, goes right into the crankcase. It's the upper one of the 2 on the front of the block, pass side, down low; where the bracket that held the smog pump on used to be.
Put a short bolt with a drop of silicone on the threads in that bolt hole.
The lower one isn't a problem; only the upper one.
When you hacked it off, one of the bolts you left out, goes right into the crankcase. It's the upper one of the 2 on the front of the block, pass side, down low; where the bracket that held the smog pump on used to be.
Put a short bolt with a drop of silicone on the threads in that bolt hole.
The lower one isn't a problem; only the upper one.
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Joined: Sep 2005
Posts: 27,933
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Car: Yes
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Transmission: Sometimes
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totally different block

So you're saying it's not a small block Chevy, or what?
If it is, then it has the hole like every other small block Chevy, and it still needs the bolt even if you hacked the pump off of it.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
if it is leaking from the front wouldn't I have oil dripping off the front of the block down to the ground? I see no oil up front, its all at the rear. Its the old dip stick. Making oil on the ground towards the rear.
Supreme Member
Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
I guess I gotta save the day again 
Most times a leak ya can't find is the Oring on your dizzy leaking.
Yank dizzy and replace Oring. Its a slow but constant leaker when it does.
That is unless you having PVC problem and your building to much pressure in your enigne. Which will puke oil out in the strangest places. Nother forum a guy was having trouble. His dizzy cap kept filling with oil. Crank case pressure were to great and were fillin it.
PVC system just let you vent gasses and not any liquid. Where on like most motorcycles. The crank case vents free and will puke oil on the ground or into your air box. Not "PC" on car, so the PVC system make sure only gasses vent and back into the engine.

Most times a leak ya can't find is the Oring on your dizzy leaking.
Yank dizzy and replace Oring. Its a slow but constant leaker when it does.
That is unless you having PVC problem and your building to much pressure in your enigne. Which will puke oil out in the strangest places. Nother forum a guy was having trouble. His dizzy cap kept filling with oil. Crank case pressure were to great and were fillin it.
PVC system just let you vent gasses and not any liquid. Where on like most motorcycles. The crank case vents free and will puke oil on the ground or into your air box. Not "PC" on car, so the PVC system make sure only gasses vent and back into the engine.
Joined: Sep 2005
Posts: 27,933
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
I guess I gotta save the day again
He has a V8. Those don't have distributor O-rings. That's a 6-cylinder thing.
He thinks he already knows what the problem is; he's looking for someone to validate his opinion, rather than learning what's really going on.
He'll find out soon enough after dinking around with the dipstick, that if there's no bolt in that hole I's speaking of, he will have no effect whatsoever on his leak. But that's OK with me: MY car doesn't have that leak, because I have a bolt in the hole. Doesn't hurt me if his leaks. 
What happens with the missing bolt is, the oil gets turned into a mist by the crank damper, and slung rearwards all over everything on the lower right side of the engine. Cars with no bolt in the hole end up with oil mostly all over the K-member, the starter, and the flywheel / TC cover. A little on the pan but not much; very little stays actually on the front of the motor; and constant oil smoking off the headers down low when driving but not when sitting still.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
I'm not trying to second guess anyone, I'm just trying to come up with a solution to my problem. I will look into the bolt in question and see if it is plugged ASAP. This is the reason why I come to this site because other people have had the same problems. I love my new engine and it kills me that its leaking oil. I thank everyone for their input to my problem. And will post as soon as I can get it fixed.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
Well, I checked the smog pump bracket hole. There is a bolt in each of the bracket mounts. Top and bottom hole bolted up.
The dip stick is leaking where it goes into the block. I can feel oil on top of the starter solenoid and all over the block right there.
What is the best way to keep it from leaking? Silicone sealant? An O-ring of some kind? The dip stick is from the old L03 and bolted to the manifold on the pass. side. The new engine is using hedders so no bolt to fasten the dip stick housing flange to. Ideas??
The dip stick is leaking where it goes into the block. I can feel oil on top of the starter solenoid and all over the block right there. What is the best way to keep it from leaking? Silicone sealant? An O-ring of some kind? The dip stick is from the old L03 and bolted to the manifold on the pass. side. The new engine is using hedders so no bolt to fasten the dip stick housing flange to. Ideas??
Joined: Sep 2005
Posts: 27,933
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
You can put an entire year's output from a silicone plant on that, and if it's flopping around out there in the breeze with nothing holding it still, it will NEVER seal.
Go get your stock exh man hardware for where the tube's little tab bolts up. Make a little spacer out of water pipe or the like, and bolt the dispstick tube back like it belongs with the stock stud. Bend the tab upwards before you put it together, such that it holds a little pressure downward on the tube; put an O-ring on the tube to seal to the block, maybe with some gorilla snot.
Go get your stock exh man hardware for where the tube's little tab bolts up. Make a little spacer out of water pipe or the like, and bolt the dispstick tube back like it belongs with the stock stud. Bend the tab upwards before you put it together, such that it holds a little pressure downward on the tube; put an O-ring on the tube to seal to the block, maybe with some gorilla snot.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
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From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
thank you for your kind reply. Little bits of know how like this is more helpful to me than sarcastic remarks.
I will try that tomorrow. Today I wrastled the dip stick out and cleaned it really good and made sure it was straight below the "seating flange" on the housing. Hopefully I can find that stock manifold bolt.
I will try that tomorrow. Today I wrastled the dip stick out and cleaned it really good and made sure it was straight below the "seating flange" on the housing. Hopefully I can find that stock manifold bolt. Thread Starter
Senior Member
Joined: Sep 2004
Posts: 502
Likes: 1
From: Leesville, LA
Car: 1989 Camaro RS
Engine: Modified 350 TPI
Transmission: Modified 700 R4
Axle/Gears: Posi 3.42
I managed to get the oil dipstick to stay put and quit leaking!! But I still have a leak from somewhere. I took the dust cover off and thought maybe the rear seal was going bad. The flexplate and torque convertor are dry so I think the seal is good. I did notice where oil has been running down the two sides of the cover, and pooling in the middle and dripping out from there. I still see a drip off of the starter. If you look at the #8 plug and look down there is a square mold on the block. It has oil on it too.
Is the valve cover still leaking? The back of the pass. head is dry. Can oil leak down between the hedder mounts? If I rub below the exhaust port where the hedder goes I can feel a really thick, dark black oil, almost grease consistancy.
Who has an idea?
Is the valve cover still leaking? The back of the pass. head is dry. Can oil leak down between the hedder mounts? If I rub below the exhaust port where the hedder goes I can feel a really thick, dark black oil, almost grease consistancy.
Who has an idea?
Supreme Member
Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Could get a leak kit if its really bothering ya.
Local Meijers here has been selling them off cheap. The light pen and glasses are the most expensive parts $30 but the stuff you add to your fluid is cheap.
You could then trace the leak that way.
Local Meijers here has been selling them off cheap. The light pen and glasses are the most expensive parts $30 but the stuff you add to your fluid is cheap.
You could then trace the leak that way.
Junior Member
Joined: Apr 2006
Posts: 99
Likes: 0
From: South Shore Harbor
Car: 1991 Camaro RS
Engine: 350 stroker .40 over 11:1 comp
Transmission: 700R4
I am experiencing the same thing, all i can say is check your oil sending unit. I believed you described it in your last post, it is the square piece under the distributor.
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