Heat Riser problem

Posted by Ron Ferguson On 2007/8/15 1:03:11

Hi Guys
I think I finally found my hard to start when warmed up problem. Unless the engine temp is below the center mark on the gage, it will not fire. The old owner put a aluminum heat shield between the engine and carb. I've even tried a piece of asbestos there, but no help.
Today I checked and my heat riser is rusted in place. It will not move even 1/16 inch. I have soaked it in WD-40 tonight with hopes of it loosening up. I don't know if it is in the open or closed position. Any thoughts out there?