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Too late smart
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have a 2000 2510 4x4 that I've acquired and been resurrecting. Cleaned fuel tank and carb., new brakes, cables, water pump, etc,etc. Have bad engine hesitation, stumbling on acceleration. Just lays out flat on its face. Compression 180/170. Adjusted valve clearance. Only minor adjustment, but no change in performance. Ran some Sea foam through carb. intake..helped slightly. Plugs are black with carbon. Ran pilot screw in and out but didn't help the stumbling problem. If I feather the manual choke, can get it to respond. This thing has good power if you can feather it past the stumbling. Any thoughts.??
 

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The symptoms are the classic for a partially obstructed primary (pilot) fuel circuit in the carburetor.

Remove and fully disassemble the carburetor. Then take a quality spray carburetor cleaner that does not foam, and carefully wash out all the internal passages. Also, clean and inspect the jets.

Use a can of the spray air for computers and cameras, and blow out all the carburetor passages and jets after they are cleaned. Do not use your shop compressor or you will crump the carb by blowing out a circuit plug somewhere, just too much air pressure with a compressor.
 
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