fuel pump issue?

[joe Diego]

I just got my truck out of the carburetor shop (new carb. installed and full tune up), drove about 5 miles then she stalled while going up a small hill. After a couple of attempts of trying to get it to start I gave up, dropped it in neutral and costed in reverse to the side of the road. While waiting for the tow truck I noticed the fuel filter bulb was completely empty. After about 10 minutes I made another attempt and it started, so I drove straight home. But this time the transmission was making a loud screeching/pinging noise.

The truck was sitting for about 5 years so I had complete tune up done and removed both saddle tanks.

When I got home I checked the transmission fluid and it was almost completely empty.



(1971 Custom camper 350 with auto trans.)

Any thoughts why this happened?

Thanx in advance

[Grumpy old man]

Forget about the fuel pump ! I'd be on the phone with the repair shop and I would love to see what type fuel filter they installed and where they installed it on your truck . They removed the saddle tanks and went back to the in cab tank as the primary ? Was the tank removed and at least flushed ? Were any fuel lines replaced if so where ? Any FULL tune up should include checking all fluids before slamming the hood shut including the trans fluid and right down to the window washer fluid . Was it a national chain type shop or just the local mom and pop carb shop ? At any rate I'd be on the phone wanting some answers on exactly what you were charged for and what they did for your money . If they pulled the saddle tanks they should have at least done the basic checks knowing the truck had sat for years if for no other reason of safety and potential extra work on the truck .

[special-K]

The factory tank was most likely the primary tank and in steady use since truck was new. Saddle tanks? More than likely not so much. There should be no filter till after the fuel pump on the carb side. Did the shop completely remove the selection valve and all deleted fuel line? Did they hook the gauge up w/o selector switch? Could it be out of gas with gauge not reading right? The next thing I would do is pull the fuel line from the carb and crank the truck to observe how much fuel the pump is gushing. Gushing is the word for what you should see. Dribble, drip, squirt, not good. Nada worst. If no fuel, I'd try pulling fuel line at cab floor under tank and see if fuel escapes.

The front or rear or both trans seals likely dried up while parked and leaked fluid. Top it off and you'll be fine. It will leak some when sitting

[joe Diego]

The selection valve was removed along with all fuels lines except for the one main line that goes from inside-cabin tank to the fuel pump. I disconnect the hose from the main cabin tank and fuel did come out. I guess I'll go buy a mechanical fuel pump and swap out the small hose that goes to the hard line--->carb.

Thanx for the advice. This site is pretty cool.

[zeldman]

Is there a dirt dobbers nest in the fuel vent? Is the fuel cap vented? Any old and cracked rubber fuel lines that has not been replaced yet?

Try filling the transmission and see what happens, then fix the leaks/seals.

[joe Diego]

Originally Posted by zeldman

Is there a dirt dobbers nest in the fuel vent? Is the fuel cap vented? Any old and cracked rubber fuel lines that has not been replaced yet?

Try filling the transmission and see what happens, then fix the leaks/seals.

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[joe Diego]

It's strange because right when the transmission started making noise the truck stoped and I couldn't turn it over. After adding transmission fluid and driving around it seems ok.
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