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#1
07-05-2023, 08:32 PM
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Mechanical fuel pump oil leak ?
What would cause motor oil to leak out of the bottom of a mechanical fuel pump ?
Thank you. |
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#2
07-05-2023, 08:51 PM
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A bad diaphragm in the fuel pump. You've probably got gasoline in the crankcase also. Check the oil level and smell it.
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Greg Reid Palmetto, Georgia |
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#3
07-06-2023, 07:51 AM
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X2 with Greg unless it's leaking where it joins the timing cover
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Chris D 69 GTO Liberty Blue/dark blue 467, 850 Holley, T2, Edelbrock Dport 310cfm w Ram Air manifolds, HFT 245/251D .561/.594L, T400, 9" w 3.50s 3905lbs 11.59@ 114, 1.57/ 60' |
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#4
07-06-2023, 11:49 AM
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I don’t believe there’s anyway for a mechanical pump to leak oil externally without leaking fuel externally also.
Must be from the pump to timing cover gasket,
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#5
07-06-2023, 11:56 AM
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You are right. I can tell you from personal experience that I had oil coming from the weep hole on my fuel pump. Didn't make sense to me until I put some on my finger. It was very thin and smelled like gasoline and the dipstick smelled gassy as well. So yes, it was a mixture of oil and gas and that looks like oil at first glance.
Now if the leak is isolated to the gasket between the fuel pump and the timing cover, maybe a different story.
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Greg Reid Palmetto, Georgia |
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#6
07-06-2023, 02:50 PM
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The OP should not run the motor until he at least drops the filter off and smells it for traces of gas.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#7
07-06-2023, 03:01 PM
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A friend of mine personally witnessed a guy start his engine when gas had leaked into the oil... Boom!... He said that it blew the seals and gaskets out!
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Greg Reid Palmetto, Georgia |
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#8
07-06-2023, 04:54 PM
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I have never seen that in person, but when I worked part time at a repair shop in the late 70s we had a Caddy towed in from a women’s house that such a thing took place in.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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