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Old 09-23-2007, 12:51 PM   #1
tx71smallblock
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oil leak

i have an oil leak on my 350, it seems to be coming from between the head and the block but i didnt know oil went through the block like that. it takes it awile to show up after you start it. i have already ruled out the valve cover and the oil pressure line behind the intake. WHAT IS IT!!??? Please help.

p.s. i have already tightend the head
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Old 09-23-2007, 01:31 PM   #2
C10-Driver
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Re: oil leak

It might be coming from the back of the intake manifold and running down the backside of the head. Either one of 2 places I can think of... the corner of the manifold itself or one of the back bolts which tend to leak also.
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Old 09-23-2007, 02:59 PM   #3
bryanw1968
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Re: oil leak

Quote:
Originally Posted by C10-Driver View Post
It might be coming from the back of the intake manifold and running down the backside of the head. Either one of 2 places I can think of... the corner of the manifold itself or one of the back bolts which tend to leak also.
What he said.
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Old 09-26-2007, 09:53 PM   #4
tx71smallblock
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Re: oil leak

so there is no way for it to be leaking from the head, cause i have already retighted the bolts.
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Old 09-27-2007, 06:40 AM   #5
72armyswbtruck
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Re: oil leak

Not necessarily so, you might have over tightened them on accident.
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Old 09-27-2007, 08:28 AM   #6
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Re: oil leak

You can get a dye to put in the oil to pinpoint exactly where the oil in coming from. You might have to rent a ultraviolet light with enough intensity to see the dye.
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Old 09-27-2007, 08:36 AM   #7
Bucky71
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Re: oil leak

It looks like the oil is coming from further up. Intake manifold?
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Old 09-27-2007, 09:19 AM   #8
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Re: oil leak

theres an allen head plug partially under the head near where the oilpressure sending line attaches that may have loosened up its doubtfull but still a possibility and would require removing head to check// id go with the intake theory myself
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Old 09-27-2007, 08:56 PM   #9
tx71smallblock
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Re: oil leak

how much pressure is too much on the head bolts, like in ft.lbs?
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