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1980 sports coach mh. 454 7.4 Jc. 7-8-16  
Hi, i recently had my 454 motor rebuilt, including the carburetor {Quadrajet 4 bb}.. Also new fuel electrical pump located in the rail besides the fuel tank. Also the whole unit of the distributor is new as well... Spark plugs wires etc...New fuel hoses all the way to the tank... OK after said all that was done this is the problem i have.. Motorhome starts fine and idles beautiful you can barely feel the motor but after it warms up, even at idles it has completely died. Some times it doggs under acceleration, and evidently dies..Dont know what to do... Please some one shead me some light thanks...
Re: 1980 sports coach mh. 454 7.4 Bubba The Bus Tech 7-9-16  
There are several problems that this could be

First thing to check from your description is the fuel flow. If debris from building fuel lines has plugged a filter or crud from the tank has plugged the pick up sock filter that account for your symptoms


Bad ignition box, module, coil, rotor. If you have an aftermarket ignition box they are always first suspect, the module and pick up are both heat failure sensitive.

Your Quadrapuke carb,(Second worst carb ever put on an american V8) fuel pump etc.

Good Luck
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