Gas Tank Dropping Tips
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Gas Tank Dropping Tips
My twin Walbro setup is only putting out 35# all the sudden so I have to drop the tank to check it out. When I put them in I had the drivetrain out for a clutch install but I know others have dropped the tank without droping the drivetrain. I have everything off but I have no idea how I'm going to get the crossover pipe backed off enough to get at the two lines inside to disconnect. I remember the crossover being a pain in the dick with the transmission out so I'm looking for tips with the tranny in. I'm thinking of dropping the passenger tank which will pull the hose away from the drivers tank.
Pro
Joined: Mar 2010
Posts: 608
Likes: 9
From: St. Petersburg FL
You can get the cross over out with the pass side still in. I just recently pulled my tank(s) prolly 15 times, no joke, trying to diagnose my fueling issues. That was with all the drive in and the exhaust out. You can compress the crossover enough to get it out out of the way to drop a tank on either side. My recent dellema was kind of what you are describing, it blew the o ring out of the fuel pump block off on the pass side. All I can really say is this stock fuel system setup sucks a$$.
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
The hose was part of a kit and was supposed to be submersible hose. The thing is it's not split all the way through, it looks to be the right kind of hose because it has two laters and only the outside layer is split. It doesn't leak air when I put the air compressor on one end and plug the other. So while it definitely needed fixing I'm not sure it was the problem. I guess I'm going to try and test the pumps somehow.
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Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Two Walbro 255's plumbed and wired in parallel in the stock bucket with the bottom cut off. Racetronix hotwire kit. FIC 1k injetors. Stock fuel lines and rail.
Pro
Joined: Mar 2010
Posts: 608
Likes: 9
From: St. Petersburg FL
I wonder if one of your pumps went. You would think one pump should make more than 35# though. I have my pump power coming off the alternator like you do and I am starting to wonder if I am seeing pressure drops from alternator voltage dropping. just an idea.
I wish I would have thought of the way you have your pumps set up. Sounds a lot easier than making a hanger and **** like we did.
I wish I would have thought of the way you have your pumps set up. Sounds a lot easier than making a hanger and **** like we did.
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
I really should have checked the pump voltage before I tore it down but I don't see how they could not be getting good voltage. All the wires looked good. I quickly tested both pumps to make sure they were "working" but I realize this is not a true test. What I had noticed lately is that the pumps were a lot quieter when priming but I'm not sure if that is because they did not have the load on them as they were leaking past the hose or because they are on the way out. Right now I'm going to get a hold of the submersible hose and put it back together and test it without re-seating the crossover outer hose as thats really the biggest pain of the job.
Yea this setup has been working well for years, since ~'09 I think. Its very simple, cheap and effective. I've liked it until now. Some info and pics of it: http://forums.corvetteforum.com/c6-f...l-pumps-3.html
Yea this setup has been working well for years, since ~'09 I think. Its very simple, cheap and effective. I've liked it until now. Some info and pics of it: http://forums.corvetteforum.com/c6-f...l-pumps-3.html
Pro
Joined: Mar 2010
Posts: 608
Likes: 9
From: St. Petersburg FL
That hose isnt cheap I can tell you that. I will agree the crossover is by far the biggest pita. My lines kept getting stuck together. Man I wish I would have seen that thread when we started my fuel system, all I saw were these crazy pump hangers and figured thats what had to be done. talk about tryin to over engineer something we didnt need to.
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
It is a pain...especially if it is the first time you've done it.
Lots of photos here.... http://forums.corvetteforum.com/c6-t...fuel-pump.html
Lots of photos here.... http://forums.corvetteforum.com/c6-t...fuel-pump.html
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
It actually wasn't as bad as I thought once I did what Motorhead described, except I took the support bracket off which may have been a mistake because it may be a bear to get back on.
Ordered my $25 1 foot piece of 5/16" hose today.
Ordered my $25 1 foot piece of 5/16" hose today.
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
I removed many times myself on m6. I designed my own triple intank so you can imagine how many times the in and out..
you guys ever do it with a 4l80e in the car? I have...m6 is cake!
you guys ever do it with a 4l80e in the car? I have...m6 is cake!
