Truck wont start help me please

[ESO6200]

Hello so i have a 1984 gmc sierra 305 engine .. So before my truck would turn on right away then die out lack of fuel and ruled out it was a fuel pump issue .. Ijust swapped my fuel pump amd now it wont start spark plugs wires battery are new . What could it be? It would crank but no not turn on . Is it my carb? Please help thanks .

 

[kuyaspidey]

I could be wrong but I would assume it's a carb issue, may need cleaned or replaced.

 

[ESO6200]

I could be wrong but I would assume it's a carb issue, may need cleaned or replaced.

Thats what im thinking its a carb issue . Because i just the lines and fuel came out meaning the pump is all good trying to get secound opinions


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[1987 GMC Jimmy]

Try getting a buddy to spray some starting fluid in the carb while you start it, and if it runs for a few seconds, the carb is likely the issue. You could also disconnect the steel or rubber fuel line and put it in a bottle and turn the key. If you're getting fuel in the bottle, the carburetor is the likely culprit.

 

[ESO6200]

Try getting a buddy to spray some starting fluid in the carb while you start it, and if it runs for a few seconds, the carb is likely the issue. You could also disconnect the steel or rubber fuel line and put it in a bottle and turn the key. If you're getting fuel in the bottle, the carburetor is the likely culprit.

Are yu talking about the line that goes into the fuel pump right? But ill try that out .thanks !


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[Georgeb]

Check to see that fuel is being sprayed in my the accelerator pump when you open the throttle.

 

[ESO6200]

Check to see that fuel is being sprayed in my the accelerator pump when you open the throttle.

Can my choke be stuck? Because my carb has worked just fine just until now .


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[1987 GMC Jimmy]

Are yu talking about the line that goes into the fuel pump right? But ill try that out .thanks !


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No, I'm talking about the line that goes into the bowl of the carburetor.

 

[ESO6200]

No, I'm talking about the line that goes into the bowl of the carburetor.

Ohokay ikno exactly which one your talking about


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[1987 GMC Jimmy]

Ohokay ikno exactly which one your talking about


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Okay, great. Then just disconnect it and see if it's pumping fuel. You can, like George said, see if fuel squirts out when the accelerator is pumped before you disconnect stuff.

 

[ESO6200]

Okay, great. Then just disconnect it and see if it's pumping fuel. You can, like George said, see if fuel squirts out when the accelerator is pumped before you disconnect stuff.

Will do . Thanks ill keep you guys posted ! Amy other suggestions?


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[85c10owner]

So you said it was running before the fuel pump swap and all you did was swap the pump. Did you change anything else? Have you verified you are getting spark? Are you getting fuel? Is fuel in the tank? Are the fuel lines on the correct ports on the pump?