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Topic: Mid 80's gas tank question... (Read 3 times) previous topic - next topic
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Mid 80's gas tank question...
Yahoo Message Number: 143651
Hi all (and Larry in particular!!  (8-> )

So.. Got the '85 gas tank re-installed along with :

o new rubber fuel lines o new inline fuel filter o new electric fuel pump mounted near the tank o new mechanical fuel pump (harder than expected)
 We went to start the RV and it was a no-go.. To make a long story short, we started removing things from the equation -- as we were not getting ANY fuel at the engine..  Removed the electric fuel pump -- heard a loud hiss when removing the output hose.. We then removed the fuel filter -- same story there -- a slight hiss once we removed the output.. We tried running the engine between each item removal..
 Anyway, I finally succumbed and put an extension hose on the output from the tank and tried sucking and got no-where -- it was completely blocked.. Apparently the line was being pinched..  So, I dropped the front tank adjusting bolts (this is the 50 gallon aftermarket model) and got a good two inches lower and then tried sucking gas again and easily created a siphon..  I'm thinking two lines are probably crossed on top of the tank and when the tank was lifted into place the pinching was created.
 So, I can leave the front end of the tank lower but it's a bit loose and the tank can move laterally around a bit on the hangars.. Not sure if that's OK to do or not.. Another option would be to empty the tank, lower it and use duct tape to hold the lines in particular places on the top of the tank to ensure no tube crossing occurs during re-installation..

Suggestions???

I'm hoping to do this tomorrow..

Thanks in advance for any insight you can provide!!
Re: Mid 80's gas tank question...
Reply #2 –
Yahoo Message Number: 143654
That was my thinking as well.. I've got one of those pipe inspection cameras and will try to use it tomorrow to see in that small gap above the tank..maybe I'll see what happened and be able to fix it without dropping the tank..
Re: Mid 80's gas tank question...
Reply #3 –
Yahoo Message Number: 143657
"Apparently the line was being pinched..
Suggestions???"

Odd that this happened after doing all the rubber lines. Did you drop the tank to get at the outlet and return lines?  Good chance you did pinched it.  Whatever the cause, the tank's bolts should be tight when you are finished.  Curing the problem may be as simple as loosening the tank and shoving the fuel lines into a position where they are not pinched, it had to be that way before the lines were replaced..

You will like the electric fuel pump. on hot days when climbing long, vapor-lock inducing upgrades. It's also handy for  priming the carburetor when the rig has been parked for a long period.

Larry
Larry
2003 23.5' Front Lounge, since new.  Previously 1983 22' Front Lounge.
Tow vehicles  2020 Jeep Wrangler Rubicon, 2001 Jeep Cherokee
Photo Collection: Lazy Daze
Re: Mid 80's gas tank question...
Reply #4 –
Yahoo Message Number: 143671
Got it all fixed and in good shape.. The problem was that I did not route the new hoses thru the holes in the side to side bulkheads.. Once done no more pinching..
Re: Mid 80's gas tank question...
Reply #6 –
Yahoo Message Number: 143682
Thanks Gary.. Me too.. Certainly better safe than sorry later.. Now I only need to change the plugs on the passenger side.. Drivers side was easy but passenger has too many obstructions by each plug.. Based on what I've seen, I think the plugs i pulled out must be at least 10 years old.. Plenty rusty.. Never seen that on spark plugs b4...
Re: Mid 80's gas tank question...
Reply #7 –
Yahoo Message Number: 143697
Rick Forgive me but I have forgot the body style. Is the a gm or ford. I have managed to change plugs this year on a Chevy G30. it was tight but I managed. I am not a a pro but do have a lot of tools. I also did a class c Ford with a 351 year 1988. Maybe even tougher than the G 30. Some from the dog house and some from the ground up from the bottom. Its now a big block would be even tougher I presume.