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521 choking on steep hills


Jacob

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Have you checked the valve clearance ,, that will make it run like a pig under load big time... 

 

And other than if you want to replace valve cover gasket ,,, it's free.

Edited by bananahamuck
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Jacob the choke cable that is on the truck is not a manual choke cable.  The choke cable has a stiff (rigid) center wire so when youyou push the choke knob in it pushes the choke plate open.

 

The Weber run at 3 to 3.5 lbs fuel pressure.

Edited by Charlie69
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  • 4 weeks later...

Update of what was causing the the engine to choke going up hills.

 

took the truck to a shop and after 2 weeks they finally found that something in the carb was causing the fuel blockage. They took the carb apart, clean it, blew out the lines and then put it back together again. They didn’t actually find anything blocking the fuel, but after that it runs great and goes up hills too. All fuel lines from the tank to the fuel filter, pump, carb, and engine were replaced as well. I’m just glad to have my truck back.

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