prot68

Im running a ricks tank with a fuel injected ly6 w/ evap deleted from computer. I have until now been running a line from the vent-looped--with a small filter at the rear of the car and typically pee some gas from the filter especially when tank is full. Whats the best way to handle this???

ls1nova71

iTrader: (4)

You need to run the vent line higher than the tank, the higher the better.

bczee

iTrader: (12)

Also move the vent line forward 1st, the cars forward motion might force fuel to the rear and cause the leakage.

ryarbrough

iTrader: (18)

Then under breaking the car's decelleration may force fuel to the front and cause leakage.

The filter needs to be elevated above the highest point where fuel will ever be present.

JonRagTop

Summit sells one under their brand name, just installed one on my car for this very reason. Flows only one way, any fuel coming from the vent has NO chance to flow past into a filter.

GM sells one as well, one application is for 91 Camaro RS. GM part number
10033125, called a valve assembly.

Good Luck

Jonathan

prot68

happen to have a p/n for the summit valve and what size hose does the valve use-

prot68

bump

SS69LS1

iTrader: (108)

What kind of car? This may help us figure out the highest/best place to run the vent to. I ran the vent line in my 69 camaro up above the rear end, and fastened it to the highest section of floor/trunk area. Its above the tank height, but its not on the road yet & don't know how well it will work.

prot68

68 chevelle -currently the vent exits the frwd upr drivers side loops over the tank and is secured with a small filter at the end. I have an access door for the fuel pump in the truck floor and wonder if a charcoal canister mounted in the trunk and then exiting back through the truck floor would solve my problem. There not much height to take the vent line up higher without entering into the trunk Im just dont under stand if its fuel slosh, what others are doing different.

Mike52

iTrader: (1)

In the street rodding world, we run into this often. The advise above is the correct way to solve your problem, we also plumb a 'rollover' valve into the vent line for safety reasons. Run the vent as high as possible, a couple inches above the highest point of the tank is not a good solution.

Mike

JonRagTop

Summit Racing SUM-220192B

Fitting Size 1 -6 AN
Fitting Attachment 1 Male threads
Fitting Size 2 -6 AN
Fitting Attachment 2 Male threads
Check Valve Material Billet aluminum
Check Valve Finish Black anodized

After the check valve, continue a line to the highest point possible. I terminated the line with a small fuel filter, since the tank will create a vacuum draw through this check valve, filtering the air would be wise.

Don't hesitate to be creative here, use common sense. The tank sucks in vacuum through the vent line, check valve prohibits fuel from rushing out the vent line under "full tank situations" combined with braking. After the check valve add some type of filter.

Good Luck.

prot68

thanks guy...