Bubbles in the fuel line...

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evildomain

evildomain

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OK, I got my 813 installed and running but I noticed that the intake fuel line at


first had a bunch of tiny bubbles. As I drove it longer the bubbles got bigger.


My return line is new and half of my intake line is new(the half after the fuel filter).


The other half is the one that comes out of the tank, it's the stock black hose.


Once I took a good look at it I noticed a bunch of tiny cracks. I'm assuming


that's the source of all my pretty little bubbles? :eek:


I know I should have replaced the entire line but I had a leaky tank grommet


before that drove me insane and didn't want to risk damaging this one. It was


a stupid mistake on my part, the engine could have been damaged do to a lean


mixture but I caught it....gotta love those clear fuel lines..


Moral of the story, check your lines and don't be lazy like me... :D


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Oops!


Well, here's the fuel line I was driving with...Glad I finally opened my eyes


and took a look at it.. :eek:


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What I feared would happen.. happened.... :mad:


The stupid grommet is leaking so now I have to order a whole new tank


just for that piece. On the bright side, hardly any bubbles now and the


truck idles super smooth. Those evil bubbles are going to end up costing


me $20 when all is said and done.
 
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Shoe goo? Maybe another 1/5 grommet would fit. Ill check my hpi when later today. Ive given mine the old in-out even with a screwdriver and its held up. sometimes if I fill my tank too full it looks like my grommet is leaking. Too full?
 
I'm curious about the HPI grommet. I wanted to try that Snappy fuel kit with the


vent valve. Let me know how it goes Hamster?


Thanks Yolanda21, it's good to know the MCD will fit. :)
 
hamster huey said:
Shoe goo? Maybe another 1/5 grommet would fit. Ill check my hpi when later today. Ive given mine the old in-out even with a screwdriver and its held up. sometimes if I fill my tank too full it looks like my grommet is leaking. Too full?
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It saw the grommet rip a little when I removed it. Once I installed it the leaking


started.....bummer:(


I keep my truck inside so I can't have a smelly fuel tank in the house...
 
hmmm, that's odd, 7 months, 8 gallons, and still running the stock lines and grommet. grommet seeps a bit, but not enough to bother with. wish i had this much luck with the gearplate.
 
The 5b/5t grommet works tight enough but the lip seat seal on it is taller than the Ramp one so Im not sure if it would slide up and down. It would definately be a good spare emergency part though. I also checked the Walbro fuel filter out that comes on the 5b/5t. Its a "clunk" so it moves around. It would work in the Ramp except it wont find the small round divet in the bottom of the ramp tank to suck out that last ounce or two.

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hamster huey said:
The 5b/5t grommet works tight enough but the lip seat seal on it is taller than the Ramp one so Im not sure if it would slide up and down. It would definately be a good spare emergency part though.
I also checked the Walbro fuel filter out that comes on the 5b/5t. Its a "clunk" so it moves around. It would work in the Ramp except it wont find the small round divet in the bottom of the ramp tank to suck out that last ounce or two.
Click to expand...
The clunk filters are the way to go, they will allow you to suck every drop from the tank without sucking any air.....They move around so that when your truck is on its lid, they still get fuel...
 
This is a real old post I see but I reinstalled my grommet on my MT and it is leaking also. When I give it a little throttle when it is sitting there idiling it bubbles around it also. What is my best option?? Purchase new a grommet? If so what have you found for a replacement? MCD? What is the best way to re-install so it doesn't rip? Thanks......
 
Hell, even the MCD grommets leak like crazy. I think that the gas gets to the rubber after a while. Also, the fact that it sits near the exhaust isn't good for it. For the past year I've been sealing mine up with silicon which really isn't the best thing considering silicon is not gas resistant. Red RTV might be the way to go.

I've seen some brass fittings that the airplane guys use to mount fuel lines anywhere they want on their fuel tank. I think that might be the way to go. I'll check in on those fittings this weekend and see if they'll work.
 
You can also take off the fuel lines to the carby and slide a o ring down to the grommet and force it over the top of the grommet so that it pulls the grommet up tight on the tank. the o ring needs to be smaller than the top of the grommet. This has worked for me and takes only a couple of minutes to do plus o rings can be found anywhere.
 
Kewl, I will try some things. The brass fittings do sound interesting. Keep me posted.
 
I used Permatex form-a-gasket no 1 on the lip of my tank grommet (it was leaking pretty badly from the factory). Says on the package that it is gas resistant, so far it has worked great... no more leaks.
 
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