I need gas? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Keep on Trukin · 09-08-2003, 11:40 AM

My 67 GMC is being starved of gas, bought a new fuel pump and its still dies out, i let it sit for a while then it runs again then dies again. It has the straight 6 it ran good for 2 weeks? Keep in mind its been sitting for 2 years. Help!!!

**truckster** · 09-08-2003, 12:46 PM

I'd replace the fuel filter and check the needle and seat in the carb. 2 years of sitting can gum it up.

sneakysnake · 09-08-2003, 12:49 PM

trash in tank?,fuel line clean? Had a 6.2 diesel at work the other day was giving fuel problems, back blew the fuel line and it ran fine, Now I guess Im gonna pull and drain the tank

Keep on Trukin · 09-08-2003, 12:56 PM

I have done everything, new carb kit new needle, new filter? I checked all the lines their clean the one coming out of the gas tank was a little dirty, but gas is getting out. I have taken the gas tank out and going to clean it? Its weird.

cdowns · 09-08-2003, 01:11 PM

take the fuel pick up uot of the tank and check the strainer for debris, also check under the cab there's a rubber hose from the tank to the frame rail at the back of the cab

ronh72c10 · 09-08-2003, 01:20 PM

Are you sure it is being starved? Have you checked the fuel flow at the line going into the carb?

A strange problem that I encountered where a car would run for a while then die, you'd wait and it start again and then it'd die was where the muffler was blocked up due to rust, once backpressure built up the engine would die. The telltale there was that after it died you'd hear a hiss from the exhaust as pressure bled off.

Ron

lukecp · 09-08-2003, 01:46 PM

Get a clear plastic inline fuel filter....they make it very easy to see if you are getting gas to the carb or not. Especcialy if you have the in-carb fuel filter. I would suggest removing it completley, then cutting the pump-carb fuel line and installing the inline filter. I use a Fram G3 filter, which costs about $3.

Good luck!

Keep on Trukin · 09-08-2003, 03:23 PM

When i took the pick up line out of the tank it didnt have the strainer, do u guys think its picking up junk from the tank?
What moves the fuel pump, can anything go wrong in the motor?

rustyold69 · 09-08-2003, 03:49 PM

there is a little piece that sits on the cam so unless it broken or the lobe went flat it should still be working

Keep on Trukin · 09-08-2003, 03:54 PM

So it works off of the cam, and a cam last a while? So it couldnt be the cam. I am cleaning out the gas tank today, and installing an inline clear filter for the carb. Thnks u guys for all the great tips.

Earl Junior · 09-08-2003, 04:57 PM

Also may want to check your fuel line routing. I was having problems losing fuel pressure because it was too close to a head and was boiling the fuel in the line.

Kman · 09-08-2003, 05:01 PM

also check your gas cap if it is not venting it will do the same thing try running with out the cap to test
kman

Maximum Overdrive · 09-08-2003, 05:17 PM

Fill up a gas can and go get some fuel line hose. Get enough to run from the can to the fuel pump and then see if runs ok or not with it pumping gas from the gas can. This may help you track down if its something from the fuel tank to the pump. Fuel line is pretty cheap so it shouldnt cost more than 5 bucks to do this. Good Luck

Keep on Trukin · 09-09-2003, 01:43 PM

Thnks, i will do just about anything to get back on the road.
What would u guys recommend for cleaning out the gas tank?
Something i could possible get at my local parts store. Or where ever?
Thnks, again.

09-08-2003, 11:40 AM	#1
Keep on Trukin Registered User Join Date: Aug 2003 Location: Ft. Worth Posts: 71	I need gas? My 67 GMC is being starved of gas, bought a new fuel pump and its still dies out, i let it sit for a while then it runs again then dies again. It has the straight 6 it ran good for 2 weeks? Keep in mind its been sitting for 2 years. Help!!!

09-08-2003, 12:46 PM	#2
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,875	I'd replace the fuel filter and check the needle and seat in the carb. 2 years of sitting can gum it up. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

09-08-2003, 01:11 PM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	take the fuel pick up uot of the tank and check the strainer for debris, also check under the cab there's a rubber hose from the tank to the frame rail at the back of the cab __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-08-2003, 01:46 PM	#7
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Get a clear plastic inline fuel filter....they make it very easy to see if you are getting gas to the carb or not. Especcialy if you have the in-carb fuel filter. I would suggest removing it completley, then cutting the pump-carb fuel line and installing the inline filter. I use a Fram G3 filter, which costs about $3. Good luck! __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

09-08-2003, 03:49 PM	#9
rustyold69 student wrench turner Join Date: Jan 2003 Location: wrightstown, wisconsin Posts: 192	there is a little piece that sits on the cam so unless it broken or the lobe went flat it should still be working __________________ 1969 Chevy C-10 with 250 L6 2002 GMC Sierra 2500 HD Duramax with banks six gun

09-08-2003, 12:49 PM	#3
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	trash in tank?,fuel line clean? Had a 6.2 diesel at work the other day was giving fuel problems, back blew the fuel line and it ran fine, Now I guess Im gonna pull and drain the tank

09-08-2003, 12:56 PM	#4
Keep on Trukin Registered User Join Date: Aug 2003 Location: Ft. Worth Posts: 71	I have done everything, new carb kit new needle, new filter? I checked all the lines their clean the one coming out of the gas tank was a little dirty, but gas is getting out. I have taken the gas tank out and going to clean it? Its weird.

09-08-2003, 01:20 PM	#6
ronh72c10 Senior Member Join Date: Jul 2003 Location: Mount Forest, Ontario, Canada Posts: 978	Are you sure it is being starved? Have you checked the fuel flow at the line going into the carb? A strange problem that I encountered where a car would run for a while then die, you'd wait and it start again and then it'd die was where the muffler was blocked up due to rust, once backpressure built up the engine would die. The telltale there was that after it died you'd hear a hiss from the exhaust as pressure bled off. Ron

09-08-2003, 03:23 PM	#8
Keep on Trukin Registered User Join Date: Aug 2003 Location: Ft. Worth Posts: 71	When i took the pick up line out of the tank it didnt have the strainer, do u guys think its picking up junk from the tank? What moves the fuel pump, can anything go wrong in the motor?

09-08-2003, 03:54 PM	#10
Keep on Trukin Registered User Join Date: Aug 2003 Location: Ft. Worth Posts: 71	So it works off of the cam, and a cam last a while? So it couldnt be the cam. I am cleaning out the gas tank today, and installing an inline clear filter for the carb. Thnks u guys for all the great tips.

09-08-2003, 04:57 PM	#11
Earl Junior Cadillac power Join Date: Oct 2002 Location: North Idaho Posts: 296	Also may want to check your fuel line routing. I was having problems losing fuel pressure because it was too close to a head and was boiling the fuel in the line. __________________ Just for the record, if I'm down to my last potato, I'm not sharing it with a guy who wants to kill me so he can get a better supply of virgins in paradise. That lesson is a little thing I call Economics 101, infidel style. --Scott Adams author of Dilbert

09-08-2003, 05:01 PM	#12
Kman Registered User Join Date: Sep 2002 Location: Melbourne,Florida Posts: 174	also check your gas cap if it is not venting it will do the same thing try running with out the cap to test kman __________________ New 89 chevy 1500 driver 72K20 rust bucket project stripped down to the frame engine rebuild started 71 Blazer - another procect

09-08-2003, 05:17 PM	#13
Maximum Overdrive December 21, 2012 Join Date: Apr 2000 Location: Black Eagle, Montana Posts: 1,634	Fill up a gas can and go get some fuel line hose. Get enough to run from the can to the fuel pump and then see if runs ok or not with it pumping gas from the gas can. This may help you track down if its something from the fuel tank to the pump. Fuel line is pretty cheap so it shouldnt cost more than 5 bucks to do this. Good Luck __________________ *"!Ama Sua, Ama Kjella, Ama Lllulla!"*

09-09-2003, 01:43 PM	#14
Keep on Trukin Registered User Join Date: Aug 2003 Location: Ft. Worth Posts: 71	Thnks, i will do just about anything to get back on the road. What would u guys recommend for cleaning out the gas tank? Something i could possible get at my local parts store. Or where ever? Thnks, again.



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