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04-12-2015, 01:52 PM | #1 |
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Oil filler tube leak?
Aloha,
After a drive I always have some oil on the side of the engine by the oil filler tube. Is it possible that some oil comes out of the filler tube and then is blown on the side of the engine? If so is it normal the oil comes back up the tube? What would be the fix? Mahalo |
04-12-2015, 05:42 PM | #2 |
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Re: Oil filler tube leak?
Check Ford service manual several types of tubes. My L31 tube has baffles inside and keeps oil from coming out. Also make sure cap is not sealing the tube not allowing crankcase to breath. Oil level stick can also allow oil to blow out, the loop/handle needs to be all the way down. Worn piston rings can cause pressure to blow oil out
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04-12-2015, 05:55 PM | #3 |
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Re: Oil filler tube leak?
And..........make sure the tube is seated tightly in the block.
I thought my oil was coming from the cap and blowing back but turned out it was weeping out at the base. I was able to grab tube and remove it with no effort. Since the lowest baffle prevented me from using a tubing expander I cleaned it, fluxed it and tinned it. Smeared a little formagasket no 2 on it, aligned the baffles and drove it in with a dead blow and block of wood. No more leak. |
04-12-2015, 06:33 PM | #4 |
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Re: Oil filler tube leak?
Big hammer is right. If the dip stick is not inserted all the way in, you will overfill the engine and it will leak in a lot of places. The tang must be all the way in. jack
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04-12-2015, 08:57 PM | #5 |
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Re: Oil filler tube leak?
For tubes that are loose in the block, Just "TIN" it, & have Big Hammer drive it in yo' BLOCK!
Bill W.
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04-13-2015, 12:42 AM | #6 |
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Re: Oil filler tube leak?
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04-13-2015, 04:55 AM | #7 |
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Re: Oil filler tube leak?
Remember to use your wife's sock. After use they are soggy and smelly and squishy to wear ...
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04-13-2015, 03:44 PM | #8 | |
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Re: Oil filler tube leak?
Quote:
Bill W.
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04-13-2015, 04:41 PM | #9 |
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Re: Oil filler tube leak?
I think ford tried 3 times with different baffles in the fill tube to try and fix the oil blow by problem, he finally gave up on the early 31's, my guess, I have a book around here some where that discusses his efforts to fix the problem, use a road draft tube that fits in the top of the oil fill tube if you just want to keep the oil off your fire wall
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04-13-2015, 05:29 PM | #10 | |
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Re: Oil filler tube leak?
Quote:
Bill W.
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04-13-2015, 06:36 PM | #11 |
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Re: Oil filler tube leak?
Like a cow peeing on a flat rock!
Haven't heard that one in a while Bill. Good to see you posting again. Try one of these if you can find one.
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04-13-2015, 06:59 PM | #12 | |
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Re: Oil filler tube leak?
Quote:
I have a cap that uses a flex tube, the flex tube is missing. I'll pick up a piece of electricians flex tubing & braze it on. They seem to do a purdy good job. ( I sure do miss PURDY! HE'S MY BROTHER) Bill W.
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