[the1unv]

I have a 1994 chevy 1500, 4x4, ext.cab with the 350. I bought it with 33,000 miles on it. It now has 240,000 miles. I have always changed oil and serviced it on time. The truck has been great, never any major problems. I have been having some issues lately however; it wants to spit and sputter. I thought it was bad gas (water) so I put some
c-foam and heet in the tank. It seemed to help for a couple days but started acting up again. The truck only has one fuel filter on the frame... I changed it, when I took the old one off I couldn't even blow through it. I knew I had the problem fixed... I thought. The truck ran good for 3-4 days, then it started acting up again. I pulled off the filter and replaced again. The filter I took off was hard to blow through for a second but then seemed to have whatever was stuck in it come out and it was easy to blow through. A long story cut short I have done this 3 or 4 times now. I change the filter and it runs good for 10-15 miles then after I shut it off and re start it... spit/sputter and no power. I took the fuel supply line and stuck it in a gallon jug... turned the key on and off a few times and collected 1/2 gallon of gas. The gas looked good and clean. I didn't see any reason for this problem. I am a contractor and not a mechanic... I can do small stuff but am at a loss here. Is there any thing I can do outside of taking the tank down? I would be happy for any advise any one could give me!!
Mike

[this8384]

Have you had the fuel pressure tested to make sure that the pump isn't just getting weak?

[kitch428]

Agreed, Or the possibility of the pick up screen restricted. Either way, it's sounding like dropping the tank.
Definitely first do what the above poster said and have a simple fuel pressure check.
By the way, dropping the tank is really not that big a deal.

[MOWERMAN2468]

Could be the pump.