generator gas line

[DonBren]

I have replaced about 6 feet of 1/4 inch rubber gas line from generator to gas tank. I can not get to the last foot of hose so I cut it and installed a clear inline filter. I prime the generator and don't get any flow through filter. I disconnect the new line and filter at the old hose and put a temporary hose on and insert it into gas can and it primes in seconds aand runs great but as soon as I reconnect to old tank line there is nothing. I am certain the problem is in the last 12 inches which is not accessible due to tank is fitted between frame rails, can't see or feel anything in vicinity of entry to tank. I have tried compressed air and can get the bubbling sound and some gas will come out of tank but only a small amount. I am guessing the air will enter but possible when priming the old line might compress and not allow any back flow. I am wondering if anyone has ever had access to pickup tube and can tell me if there is any type of filter or sock on the end and I might be doing more harm by blowing air into tank. I have no clue if the tube is just a hollow thing and it does not matter if I put air through it or not. Any comments or suggestions will be appreciated. The tank is 3/4 full and I am assuming if it does come to lowering the tank I would have to get rid of most of the gas, not certain if the dealer would attempt the job with almost a full tank. Don08694@aol.com

[Jimmy F]

Don,

Not sure what kind of filter you are trying to instal but here is a thought. Some filters are directional...they have an arrow on them that needs to point to the line going to the carburetor. I would check to see if the fuel is getting through the filter before dropping the tank.?

Jimmy

[ga traveler]

The reason fuel filters are directional is because the outside of the filter medium has more surface area than the inside, so the outside can trap more contaminates. It is hard to suck air. It is much easier to push a liquid. That is why most fuel pumps are at the tank. I would go to advance auto parts or autozone and buy a suction gun. It looks just like a grease gun, without a pump handle. Fill it with gas and pump fuel INTO the tank. Once you have a solid line of fuel, the pump can draw much easier

[cruzn57]

BUT......
it appears I have a crack in the fuel hose, when I pressurize the fuel tank,
I have a small leak at the fuel tank, I have applied suction on the gen fuel line, and do not get any fuel, vehicle runs great, but no fuel to gen set.

[DAN L]

Quote:

Originally Posted by DonBren I have replaced about 6 feet of 1/4 inch rubber gas line from generator to gas tank. I can not get to the last foot of hose so I cut it and installed a clear inline filter. I prime the generator and don't get any flow through filter. I disconnect the new line and filter at the old hose and put a temporary hose on and insert it into gas can and it primes in seconds aand runs great but as soon as I reconnect to old tank line there is nothing. I am certain the problem is in the last 12 inches which is not accessible due to tank is fitted between frame rails, can't see or feel anything in vicinity of entry to tank. I have tried compressed air and can get the bubbling sound and some gas will come out of tank but only a small amount. I am guessing the air will enter but possible when priming the old line might compress and not allow any back flow. I am wondering if anyone has ever had access to pickup tube and can tell me if there is any type of filter or sock on the end and I might be doing more harm by blowing air into tank. I have no clue if the tube is just a hollow thing and it does not matter if I put air through it or not. Any comments or suggestions will be appreciated. The tank is 3/4 full and I am assuming if it does come to lowering the tank I would have to get rid of most of the gas, not certain if the dealer would attempt the job with almost a full tank. Don08694@aol.com

there is a recent thread on this forum where someone installed a 1/4'' fuel line inside of the fuel tank vent hose. i don't remember the details. this is an interesting idea.
do a search and you should be able to find the post.

i found the post, here it is:

07-14-2011, 05:34 PM #3

dieselclacker
Senior Member

Workhorse Chassis Owner
Join Date: Jun 2006
Posts: 1,497
I had the same problem about 4 years ago and took a different approach. I fashioned a y fitting clamped into the 1/2 inch vent hose for the tank, and then inserted a 1/4 inch nylon fuel line like a catheter through the vent line and into the tank. I did this as a temporary repair, but it has worked so well that I have not bothered to drop the tank and do the proper fix. I think a pack rat chewed into the line on top of the tank.

Dieselclacker