Fuel leak at carb |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4945 |
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I believe this is what you speak of: GASKT FUEL INLET FITTING HOLLEY The part description even mentions it's a potential source of a leak. If it works it will probably be the best $1.39 you ever spend |
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GottaSki
Grand Poobah Joined: April-21-2005 Location: NE CT Status: Offline Points: 3335 |
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Because in these cases, the threads are not meant the sealing surface, like in pipe threads. Not on the adapter to carb body, nor the adapter to fuel line. Just an oppertunity for shredded tape to clog a jet or idle passage, or boogar up the needle and seat. And, I remember the gasket being a soft metal, not fiber. I concur, the two-wrench method is critical. |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Dave,
You should be able to get it at Napa. As long as you're getting into the adapter, take it off and check the condition of the filter/screen under it. You may also want to take the adapter with you to Napa when you go for the sealing washer. |
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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I do not recal seeing the fiber gasket when I dissasembled the fitting. Can I pick that up at NAPA? or is it marine specific?
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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81nautique
Grand Poobah Joined: September-03-2005 Location: Big Rock, Il Status: Offline Points: 5772 |
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Best thing I've found to get that flare adapter tight is to get the fuel line out of the way and use a thin wall socket on it. Most other wrenches are just too bulky to get on it. Then go back and install the fuel line with the lube of choice and double wrenches.
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You can’t change the wind but you can adjust your sails
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Tim,
If all else failed, I'd be putting teflon tape on it too! Really, the carb adapter needs to be tightened down and stay tightened. With the teflon and it's lubricity, I'd worry about the fitting loosening up. The new flat gasket should do it. |
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Morfoot
Grand Poobah Joined: February-06-2004 Location: South Lanier Status: Offline Points: 5312 |
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If the fitting screwed into Carb is still leaking even with a new gasket then why is using Teflon tape a no-no? Pardon my stupidity and misleading suggestion. Maybe I should just stick to turbine engines
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"Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman"
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behindpropeller
Platinum Member Joined: July-31-2006 Status: Offline Points: 1810 |
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81nautique
Grand Poobah Joined: September-03-2005 Location: Big Rock, Il Status: Offline Points: 5772 |
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Exactly, the leak is probably not the flare fitting but the carb fitting with the screen in it. Replace the gasket and install this fitting tight then re-install your fuel line and see what happens. If that doesn't work replace the steel line itself. Pete suggested a while back to put a little grease on the flare fitting so the steel line can swivel as you're tightening, otherwise the line gets torqued and always wants to back off..Brilliant PS. chased this exact problem this summer and replaced both gasket and line to get it to stop. |
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You can’t change the wind but you can adjust your sails
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Dave,
That flare needs to be double wrenched when tightening. It's a real tight area and on my Tique (had the same issue) I had to remove the throttle cable bracket to get to it. The problem is when it's tightened, you put a slight twist in the steel line and then the steel line will go back to it's original position unscrewing the flare adaptor. Loosen the flare first. Make sure the fiber sealing washer under the adaptor is in good shape. Tighten the adaptor and then double wrench the flare tightening it making sure you're not twisting the fuel line. A old trick is to use some lubricant under the flare nut (NOT on the flare itself) so the tubing will be free to rotate slightly until the flare is fully seated/tightened. |
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GottaSki
Grand Poobah Joined: April-21-2005 Location: NE CT Status: Offline Points: 3335 |
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No, no tape.
Get a new metal gasket or fuel line if tightening doesn't work. |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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Morfoot
Grand Poobah Joined: February-06-2004 Location: South Lanier Status: Offline Points: 5312 |
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I'd remove the fitting from the carb and make sure that the threads are clean and free from debris. Look at end of the tube to be sure it isn't cracked. Replace it if it is. You might have some old teflon tape on the fitting or in the base of the carb so clean up both and put some new teflon tape on the fitting and tighten it up. Leak check it again to be sure yo fixed it.
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"Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman"
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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I have a stubborn leak at the fuel fitting that enters the carb. Have tried tightening it multiple times but still get a small puddle on the manifold. Obviously not an acceptable condition. Can I use teflon tape or any other product on it?
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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