Sputters out - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dccarpenter · 10-10-2010, 07:22 PM

The spark plugs are a easy change, the more likely culprit is the spark plug wires so make sure you change them as well.

Also, do you have one of the clear in-line fuel filters, if not, remove the fuel line going into your fuel pump and connect it then buy a small piece of fuel line to get the rest of the way to the pump. Then have a friend sit in the car while it is in park and rev the engine, watch the flow of fuel going into the fuel pump. This will show if you have a kinked line or a problem with fuel. Also, change the fuel filter at the base of your carb, it's a 2.99 part and easy change ; it could be clogged up enough to be causing this.

baller5040 · 11-08-2010, 10:57 AM

Ok so i am still having a hard time with my truck. Its sputters out alot now. I have changed the spark plugs and the spark plug wires. I blew out the fuel lines to make sure there is nothing blocking then. I also took the top off my carb cleaned it out with carb fluid so if anything is blocking the jets it would have cleaned it out (i hope). So now i'm down to two different things one take the carb off and rebuild it something might be stuck in the jets and wont come out second the filters in the tanks are clogged up and wont let enough pressure go through the lines. If any one could please get back to me ASAP about this it would be great.

INSIDIOUS '86 · 11-09-2010, 12:27 AM

I had a problem like this a while back it turned out that the positive wire to my starter grounded out to the exhaust cause the heat melted the covering and grounded it out so check and see if that Heaney wire is grounding out or if any power wire is grounding out
Posted via Mobile Device

lindstromjd · 11-09-2010, 07:38 AM

Try taking your carb apart and making sure the float bowl is working properly. It sounds like you're starving for fuel once you really open it up and that would be a likely culprit. It doesn't take much for the float bowls to decide that they don't want to work right.

I knew a guy who had a very similar problem with his truck; it would run fine at low speeds, but once he tried to use it to pull his trailer, he couldn't get any power out of it at all. Turned out it was his (recently rebuilt) carb acting up. Sometimes even new parts go bad.

10-10-2010, 07:22 PM	#1
dccarpenter Registered User Join Date: Jun 2009 Location: Washington, dC Posts: 176	Re: Sputters out The spark plugs are a easy change, the more likely culprit is the spark plug wires so make sure you change them as well. Also, do you have one of the clear in-line fuel filters, if not, remove the fuel line going into your fuel pump and connect it then buy a small piece of fuel line to get the rest of the way to the pump. Then have a friend sit in the car while it is in park and rev the engine, watch the flow of fuel going into the fuel pump. This will show if you have a kinked line or a problem with fuel. Also, change the fuel filter at the base of your carb, it's a 2.99 part and easy change ; it could be clogged up enough to be causing this.

11-08-2010, 10:57 AM	#2
baller5040 Registered User Join Date: Nov 2009 Location: Provo, Utah Posts: 67	Re: Sputters out Ok so i am still having a hard time with my truck. Its sputters out alot now. I have changed the spark plugs and the spark plug wires. I blew out the fuel lines to make sure there is nothing blocking then. I also took the top off my carb cleaned it out with carb fluid so if anything is blocking the jets it would have cleaned it out (i hope). So now i'm down to two different things one take the carb off and rebuild it something might be stuck in the jets and wont come out second the filters in the tanks are clogged up and wont let enough pressure go through the lines. If any one could please get back to me ASAP about this it would be great.

11-09-2010, 12:27 AM	#3
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: Sputters out I had a problem like this a while back it turned out that the positive wire to my starter grounded out to the exhaust cause the heat melted the covering and grounded it out so check and see if that Heaney wire is grounding out or if any power wire is grounding out Posted via Mobile Device

11-09-2010, 07:38 AM	#4
lindstromjd Gentleman Jim owner x2 Join Date: Oct 2010 Location: West Des Moines, IA Posts: 464	Re: Sputters out Try taking your carb apart and making sure the float bowl is working properly. It sounds like you're starving for fuel once you really open it up and that would be a likely culprit. It doesn't take much for the float bowls to decide that they don't want to work right. I knew a guy who had a very similar problem with his truck; it would run fine at low speeds, but once he tried to use it to pull his trailer, he couldn't get any power out of it at all. Turned out it was his (recently rebuilt) carb acting up. Sometimes even new parts go bad.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.