Re: Starts..runs..then dies..

Posted by Mr.Pushbutton  On 2007/4/9 8:46:10

Could you check the level of fuel in the carb bowl after it conks to see if there is indeed a fuel delivery problem?
One thing I learned about fuel pumps is that they can warp under heat and lose prime, even with a new diaphragm. If you take apart the two halves of the pump you may see that the areas around the threaded (and thru) holes are distorted (raised upward) from over-torquing by previous mechanics/owners. You can heat up the housings and bend them back into relative flatness then flat-file the mating surfaces to the point where the two halves are reasonably flat to each other, when you hold the two halves together without the diaphragm and sight through them you can't see a lot of light coming through. Assemble the pump again, keeping in mind you don't want to over torque the fasteners, just draw them up evenly in a cross-torquing pattern. I have fixed "conkers" that way. Having a glass bowl/ceramic element fuel filter near the carb is a good indicator of whether there is fuel making it that far at a given moment.