wont start - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jwa76fleetside · 06-03-2011, 12:01 PM

its acting like its not getting gas.....if i spray starter fluid in the carb it will fire but then promptly die......can you start me in a couple directions to fix? is it a fuel pump?

Togart · 06-03-2011, 12:14 PM

Need more info....has it been run recently and this is a new problem, or has it been sitting? What kind of carb is it? Could be fuel pump, easiest way to check that is to disconnect the fuel line at the carb...if you get fuel coming out there then your pump could be ok. If you pump the gas pedal and you don't hear it squirting in the carb, then could be a plugged fuel filter, a stuck float in your carb, or a bad accelerator pump. If you aren't getting fuel to the carb, could be pump, or clogged sock at the tank end of the line.

rjn72 · 06-03-2011, 12:27 PM

Very possibly the fuel filter in the front of the carburetor.

**PRattenbury** · 06-03-2011, 01:55 PM

If it's a 76 truck and it's stock then as mentioned above disconnect the fuel line from the carb, stick it into a 2 litre bottle. Turn the engine over and see if the pump is putting out any gas. (After making sure there is gas in the tank, of course).

jwa76fleetside · 06-03-2011, 06:19 PM

only problem is it wont run for more than a second when i try to start it? how will i see if its putting gas out of the fuel line if i can get it to run? should i just keep trying to crank it over?

lindstromjd · 06-03-2011, 06:32 PM

If you put a clear fuel filter on it, it will help you diagnose if fuel is getting to the carb. Like was mentioned earlier, take your fuel line from the tank off your pump. Put that fuel line into a small 1 gallon gas can or something that will hold a little fuel (so the fuel line is still on the pump, just not coming from the tank anymore). Turn the engine over in your truck (either from inside or by jumping the starter, it doesn't matter). You'll see if fuel is getting to the carb with the clear filter. If it's not, then your pump is bad. If it is, then there's something wrong with the fuel lines coming from your tank.

If fuel IS getting to the carb, then take the hard line off that feeds the carb and clean out the mesh filter that's in there. See if that helps any.

jwa76fleetside · 06-07-2011, 11:28 AM

thanks i will give this a try!

06-03-2011, 12:01 PM	#1
jwa76fleetside Registered User Join Date: Mar 2009 Location: bothell Posts: 247	wont start its acting like its not getting gas.....if i spray starter fluid in the carb it will fire but then promptly die......can you start me in a couple directions to fix? is it a fuel pump? __________________ 76 Chevy Fleetside 63 Lincoln Continental w/ Ford Racing 460 (550hp) 2012 VW GTI 2013 Escalade 2008 Harley

06-03-2011, 12:14 PM	#2
Togart Registered User Join Date: Dec 2009 Location: Rochester, MN Posts: 43	Re: wont start Need more info....has it been run recently and this is a new problem, or has it been sitting? What kind of carb is it? Could be fuel pump, easiest way to check that is to disconnect the fuel line at the carb...if you get fuel coming out there then your pump could be ok. If you pump the gas pedal and you don't hear it squirting in the carb, then could be a plugged fuel filter, a stuck float in your carb, or a bad accelerator pump. If you aren't getting fuel to the carb, could be pump, or clogged sock at the tank end of the line. __________________ Togart '66 GMC 1500 '77 C-10 Scottsdale Big 10

06-03-2011, 12:27 PM	#3
rjn72 Registered User Join Date: Mar 2010 Location: el paso, ar Posts: 139	Re: wont start Very possibly the fuel filter in the front of the carburetor. __________________ JESUS IS LORD 87 crew cab V30 454/400

06-03-2011, 01:55 PM	#4
PRattenbury Senior Member Join Date: Feb 2010 Location: Maumelle, AR Posts: 478	Re: wont start If it's a 76 truck and it's stock then as mentioned above disconnect the fuel line from the carb, stick it into a 2 litre bottle. Turn the engine over and see if the pump is putting out any gas. (After making sure there is gas in the tank, of course).

06-03-2011, 06:19 PM	#5
jwa76fleetside Registered User Join Date: Mar 2009 Location: bothell Posts: 247	Re: wont start only problem is it wont run for more than a second when i try to start it? how will i see if its putting gas out of the fuel line if i can get it to run? should i just keep trying to crank it over? __________________ 76 Chevy Fleetside 63 Lincoln Continental w/ Ford Racing 460 (550hp) 2012 VW GTI 2013 Escalade 2008 Harley

06-03-2011, 06:32 PM	#6
lindstromjd Gentleman Jim owner x2 Join Date: Oct 2010 Location: West Des Moines, IA Posts: 464	Re: wont start If you put a clear fuel filter on it, it will help you diagnose if fuel is getting to the carb. Like was mentioned earlier, take your fuel line from the tank off your pump. Put that fuel line into a small 1 gallon gas can or something that will hold a little fuel (so the fuel line is still on the pump, just not coming from the tank anymore). Turn the engine over in your truck (either from inside or by jumping the starter, it doesn't matter). You'll see if fuel is getting to the carb with the clear filter. If it's not, then your pump is bad. If it is, then there's something wrong with the fuel lines coming from your tank. If fuel IS getting to the carb, then take the hard line off that feeds the carb and clean out the mesh filter that's in there. See if that helps any. __________________ 1975 GMC Gentleman Jim #1 -357 / 700r4 1975 GMC Gentleman Jim #2 -350 / TH350 Last edited by lindstromjd; 06-03-2011 at 06:33 PM.

06-07-2011, 11:28 AM	#7
jwa76fleetside Registered User Join Date: Mar 2009 Location: bothell Posts: 247	Re: wont start thanks i will give this a try! __________________ 76 Chevy Fleetside 63 Lincoln Continental w/ Ford Racing 460 (550hp) 2012 VW GTI 2013 Escalade 2008 Harley



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