Air bubbles in the fuel line and stalling on the road trip

[Desert Rat]

I've got to get the rig in for the roll cage, then the Line-X so I may have to wait to fix this. I will definitely pull the rear filter and just use the one between the pump and the carb after I blow out the lines. That should get me by for now and as soon as I can get some down time I will drop the tank and check that tank interior. I'll report back what I find.

 

[dremu]

I just went through this... the in-carb filter got clogged, to the point the truck wouldn't start, after a week.

Of sitting in the driveway. It moved perhaps 100' in that time, and then pfft.

I went this route... now I will *know* if there is bad juju in my gas line.

-- A

 

[ntsqd]

Please be careful with those glass bodied filters. Not all that hard to bang one and break it. Lots of Volkies burned up b/c of those things.

I would do the Cup Car type of zip-tie sparkcable wiring loom around that to anchor it to something.

 

[dremu]

Please be careful with those glass bodied filters. Not all that hard to bang one and break it. Lots of Volkies burned up b/c of those things.

I would do the Cup Car type of zip-tie sparkcable wiring loom around that to anchor it to something.

Yeah, I was hoping to find a plastic-bodied one to see through, but I wanna *see* if I'm getting crap from the tank or lines in the fuel, so the glass had to do. I think after some inspection I'll switch to a metal one.

I don't get the Cup Car thing though ... you talking about that plastic corrugated stuff, split lengthwise, and zip-tie that down?

-- A

 

[Thunder]

I agree with Dorian, and highly suspect an air leak somewhere in the fuel lines.
I had very similar problems with a pin hole leak in a hard fuel line. Replaced filters, pumps. Problem drove me nuts trying to figgure out. Finally in desperation I replaced all lines from tank to pump. Found the tiny leak where the line left the tank when I pulled the lines. Any ammount of air getting in on the suction side of a fuel pump will cause all kinds of problems.

 

[ntsqd]

Yeah, I was hoping to find a plastic-bodied one to see through, but I wanna *see* if I'm getting crap from the tank or lines in the fuel, so the glass had to do. I think after some inspection I'll switch to a metal one.

I don't get the Cup Car thing though ... you talking about that plastic corrugated stuff, split lengthwise, and zip-tie that down?

-- A

Take a long tie-wrap and wrap it around both the filter body, and let's say that hose below it in the pic. Do not cinch it up tight, just get it started. Now take a shorter tie-wrap and wrap it around the first one btwn the filter body and the hose. Cinch it nearly tight, but not all the way. Now pull the first one tight. Then pull the second as tight as you can get it by hand. Cut off the tails.
Old Cup cars do this with a tie btwn each pair of sparkcables. No idea if they still do or not, but it's fairly common in circle track racing. It's handy way to make a cable loom with enough space btwn the cables to prevent induction.
Will also work well to secure that filter w/o it being tight up against something that might transfer a bunch of heat into the fuel.

I agree with Dorian, and highly suspect an air leak somewhere in the fuel lines.
snippage....
Any ammount of air getting in on the suction side of a fuel pump will cause all kinds of problems.

I'll second this and point my finger at that submerged piece of hose as the first place to fix.

 

[ntsqd]

Any news on this?

 

[Desert Rat]

The rig is in getting the roll cage done. When I get it back, the first thing i will do is drop the tank, clean it, then get rid of the rear filter and the in carb filter only running the one filter between the fuel pump and the carb. I will report back on what happens.