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Old 04-13-2010, 04:17 PM
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metal fuel line question

I noticed seepage at the threaded connectors on the metal fuel lines (PCM 351). I checked the fittings and they are tight. Should I buy a new line from skidim and replace it? Should the fittings have any type of sealant or pipe dope on them?
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Old 04-13-2010, 04:24 PM
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If this is the metal connector between the carberator and the fuel pump the connectors should have teflon tape on the threads.....
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Old 04-13-2010, 04:53 PM
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Quote:
Originally Posted by broncotw View Post
If this is the metal connector between the carberator and the fuel pump the connectors should have teflon tape on the threads.....

If it is a flared fitting I don't believe it is needed.
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Old 04-13-2010, 05:53 PM
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If it's where the fuel line meets the carb, I'll bet that it's too tight. I had a leak on mine and we loosened it up and torqued it to spec (can't remember off hand) and the leak stopped. No tape required. If, when you put it on there, you really cranked it down, I'll bet money that's what's causing the leak.
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Old 04-13-2010, 06:15 PM
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There could also be some old tape keeping the flare from seating properly. Might inspect the flare on the fuel line. If it wasn't flared well, it could split a little and cause a leak.

In a perfect world there is no need for any thread sealing tape or compound. But this isn't a perfect world.......................look who we have for president.

I have sparingly used both one wrap of tape (being sure not to extend into the fitting) as well as thread compound.
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Old 04-13-2010, 06:38 PM
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I had a simular problem a couple of years ago.

I bought Part 0433


and Part 0434


and part 0417


from skidim.com and have not had a problem since.
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Old 04-13-2010, 07:17 PM
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Quote:
Originally Posted by ski_king View Post
I had a simular problem a couple of years ago.

I bought Part 0433


and Part 0434


and part 0417


from skidim.com and have not had a problem since.
Are you running this on a 351 wit the replacement 4160??
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Old 04-13-2010, 07:18 PM
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Quote:
Originally Posted by ski_king View Post
I had a simular problem a couple of years ago.

I bought Part 0433


and Part 0434


and part 0417


from skidim.com and have not had a problem since.
A reoccurring leak at the original carb/filter screen fitting (PN 0433) screwed into the carb bowl was the reason I changed ours to a stainless braided line. I even changed to carb/filter screen fitting to try to cure it with no luck. The fitting on the end of the solid line, when tightened into and against the carb/filter screen fitting would twist the steel line and the tension and the twisting of the steel line would then cause the carb/filter screen fitting to come loose from the line, untwisting no matter how tight, with or w/o a gasket, with or w/o sealant tape between the fitting and the carb bowl.
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Last edited by TMCNo1; 04-13-2010 at 07:22 PM.
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  #9  
Old 04-13-2010, 07:21 PM
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Thanks for all the input! I am also having seepage at the connection to the fuel pump. Any ideas on that?
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  #10  
Old 04-13-2010, 07:44 PM
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Quote:
Originally Posted by 92Maristar View Post
Are you running this on a 351 wit the replacement 4160??
My PCM 351 came with the 4160. I believe only the Indmar 351's came with the 4010's
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