No fuel from fuel pump. Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

boundstaffpress · 03-22-2009, 08:54 PM

The only thing worse than being stranded with fuel problems is being stranded while trying to sell a truck. The buyer was on a test drive. I was so embarrassed.
This happened last time I had the truck out, so I replaced the fuel pump, and put a clear fuel filter between the filter and and the carb. The truck hasn't been driven regularly in 3 or 4 years, so I think that there may be gunk in the fuel tank clogging the fuel pump.

What should I do?

vectorit · 03-22-2009, 09:03 PM

Did you check the usuall suspects?

Fuel tank sock?
Some carbs have a filter built in right at the inlet.

Goin deeper... is the cam old? Chevy V8's (assuming you have a V8) fuel pumps are actuated by a lobe on the front of the cam shaft.

**LockDoc** · 03-22-2009, 09:05 PM

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Does it start back up after it sits for a while? I think I would pull the sending unit out and make sure the sock filter is still on the end of the pickup tube and that it isn't clogged. It sounds like something may be sucking into the end of the pickup tube and blocking the fuel flow...

LockDoc

boundstaffpress · 03-22-2009, 09:29 PM

I haven't checked the sock, but I have checked and replaced the fuel filter in the carb.
It will fire a couple of cylinders after it sits, but it won't run.

If the sock is clogged, and I need to flush the tank, what do I use, and how do I do it?

1970 chev truck · 03-22-2009, 09:38 PM

I had a problem with the sock cloggin up, i just cut it off, i have 2 other fuel filters any way. Check the sock just to be sure, its the last thing i thought it would be when i had the problem

**El Jay** · 03-22-2009, 09:38 PM

Are you getting fuel to the pump?
How about the rubber parts of the fuel line between the tank & the pump. Are they soft & collapsing, not allowing fuel flow?

If you are still running the clear plastic, or glass fuel filter, I'd suggest ditching it.
We've never met, but I'm willing to bet big $'s that you'll be really pi$$ed if the fuel filter either melted or broke and you had to watch your truck burn to the ground.

**LockDoc** · 03-22-2009, 10:10 PM

Quote:

Originally Posted by boundstaffpress

I haven't checked the sock, but I have checked and replaced the fuel filter in the carb.
It will fire a couple of cylinders after it sits, but it won't run.

If the sock is clogged, and I need to flush the tank, what do I use, and how do I do it?

I siphoned the gas out of one of mine, took it out, got the pressure washer out and ran a bunch of soapy water through it. Then I ran clear water through it, emptied out as much of the water as I could, and put a couple bottles of heat in it and sloshed it around. I dumped the heat out, put it back in the truck with a new sock filter and haven't had any more problems....

LockDoc

boundstaffpress · 03-22-2009, 10:24 PM

I'll pull the tank tomorrow and get a new sock and some heat. When I replaced the fuel pump, I had gas coming down the line. I haven't checked rubber lines, but I have some fuel line, and It won't be hard to replace.
El Jay - You are right, I don't want to watch it all go down in flames. But, with a metal filter, I couldn't tell if I was getting fuel to the carb while working on the truck by myself.

spinning wheels · 03-22-2009, 10:35 PM

Have you checked the fuel line leaving the fuel pump to the carburetor? Recently, my truck died while driving it. I could not figure out why I wasn't getting fuel to the carb. When I looked down, what looked like a radiator hose leak, turned out to be the fuel line leaking. The fuel line was falling apart, from what seemed to be a chemical reaction. It may have been from gasoline with ethanol. I replaced the fuel line and the problem was solved.

The other item to check would be the fuel sending unit. I replaced mine as it was plugged up, after years of sitting.

Good luck.

**LockDoc** · 03-22-2009, 10:45 PM

Quote:

Originally Posted by boundstaffpress

I'll pull the tank tomorrow and get a new sock and some heat. When I replaced the fuel pump, I had gas coming down the line. I haven't checked rubber lines, but I have some fuel line, and It won't be hard to replace.
El Jay - You are right, I don't want to watch it all go down in flames. But, with a metal filter, I couldn't tell if I was getting fuel to the carb while working on the truck by myself.

If you have a Chevy dealer near you the part # for the filter is 5651705.

LockDoc

tcb-1 · 03-22-2009, 10:53 PM

second the METAL inline filters. heard too many stories about the plastic see-though type popping and, well let's just say total loss.

03-22-2009, 08:54 PM	#1
boundstaffpress Jamie Hyneman is my twin Join Date: Nov 2005 Location: La Junta, Colorado Posts: 705	No fuel from fuel pump. Help The only thing worse than being stranded with fuel problems is being stranded while trying to sell a truck. The buyer was on a test drive. I was so embarrassed. This happened last time I had the truck out, so I replaced the fuel pump, and put a clear fuel filter between the filter and and the carb. The truck hasn't been driven regularly in 3 or 4 years, so I think that there may be gunk in the fuel tank clogging the fuel pump. What should I do? __________________ Justin SOLD 1967 K10 Fleetside, 283, Front and Rear Posi SOLD Color Wiring Diagrams Now in High Resolution V8 and Cab and Cab and Chassis

03-22-2009, 09:03 PM	#2
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: No fuel from fuel pump. Help Did you check the usuall suspects? Fuel tank sock? Some carbs have a filter built in right at the inlet. Goin deeper... is the cam old? Chevy V8's (assuming you have a V8) fuel pumps are actuated by a lobe on the front of the cam shaft. __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

03-22-2009, 09:05 PM	#3
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 26,069	Re: No fuel from fuel pump. Help - Does it start back up after it sits for a while? I think I would pull the sending unit out and make sure the sock filter is still on the end of the pickup tube and that it isn't clogged. It sounds like something may be sucking into the end of the pickup tube and blocking the fuel flow... LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

03-22-2009, 09:29 PM	#4
boundstaffpress Jamie Hyneman is my twin Join Date: Nov 2005 Location: La Junta, Colorado Posts: 705	Re: No fuel from fuel pump. Help I haven't checked the sock, but I have checked and replaced the fuel filter in the carb. It will fire a couple of cylinders after it sits, but it won't run. If the sock is clogged, and I need to flush the tank, what do I use, and how do I do it? __________________ Justin SOLD 1967 K10 Fleetside, 283, Front and Rear Posi SOLD Color Wiring Diagrams Now in High Resolution V8 and Cab and Cab and Chassis

03-22-2009, 09:38 PM	#5
1970 chev truck Weldin' it up Join Date: Mar 2007 Location: Ironwood, Michigan Posts: 803	Re: No fuel from fuel pump. Help I had a problem with the sock cloggin up, i just cut it off, i have 2 other fuel filters any way. Check the sock just to be sure, its the last thing i thought it would be when i had the problem __________________ -Paul- RIP El Jay Dirt is for Racing, Asphalt is for Getting There If need be, send me an e-mail at cbm_racing_90@hotmail.com 1970 Custom/10 LWB 4X4 350/TH350 2003 Silverado 1500 Ext. cab 1974 Kawasaki 175 F7 Enduro 2002 Polaris Edge X 700 Last edited by 1970 chev truck; 03-22-2009 at 09:38 PM.

03-22-2009, 09:38 PM	#6
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: No fuel from fuel pump. Help Are you getting fuel to the pump? How about the rubber parts of the fuel line between the tank & the pump. Are they soft & collapsing, not allowing fuel flow? If you are still running the clear plastic, or glass fuel filter, I'd suggest ditching it. We've never met, but I'm willing to bet big $'s that you'll be really pi$$ed if the fuel filter either melted or broke and you had to watch your truck burn to the ground. __________________ '69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck Last edited by El Jay; 03-22-2009 at 09:40 PM.

03-22-2009, 10:24 PM	#8
boundstaffpress Jamie Hyneman is my twin Join Date: Nov 2005 Location: La Junta, Colorado Posts: 705	Re: No fuel from fuel pump. Help I'll pull the tank tomorrow and get a new sock and some heat. When I replaced the fuel pump, I had gas coming down the line. I haven't checked rubber lines, but I have some fuel line, and It won't be hard to replace. El Jay - You are right, I don't want to watch it all go down in flames. But, with a metal filter, I couldn't tell if I was getting fuel to the carb while working on the truck by myself. __________________ Justin SOLD 1967 K10 Fleetside, 283, Front and Rear Posi SOLD Color Wiring Diagrams Now in High Resolution V8 and Cab and Cab and Chassis

03-22-2009, 10:35 PM	#9
spinning wheels Registered User Join Date: Sep 2001 Location: Hacienda Heights, California USA Posts: 474	Re: No fuel from fuel pump. Help Have you checked the fuel line leaving the fuel pump to the carburetor? Recently, my truck died while driving it. I could not figure out why I wasn't getting fuel to the carb. When I looked down, what looked like a radiator hose leak, turned out to be the fuel line leaking. The fuel line was falling apart, from what seemed to be a chemical reaction. It may have been from gasoline with ethanol. I replaced the fuel line and the problem was solved. The other item to check would be the fuel sending unit. I replaced mine as it was plugged up, after years of sitting. Good luck. __________________ '72 GMC custom camper 350/350

03-22-2009, 10:53 PM	#11
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: No fuel from fuel pump. Help second the METAL inline filters. heard too many stories about the plastic see-though type popping and, well let's just say total loss. __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson



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