Thanx I'll try that. I used my vacume guage, disconnected the new vac adv from the new distributor and plugged the line, then turned the dist to max vac (approx 20) and backed off to 17mmhg. valves are adjusted and engine runs good. manifold heat valve is free and I'll have to visually check to see if spring works properly. When the truck sits for a few days it it acts like the carb is empty of fuel (grinds a long time to start) after that it starts instantly. Might the carb empty into the manifold or fuel leak back into tank thru fuel pump? Thanks for your advise and any ideas are appreciated as they may lead to the solution, I've already had it looked at twice by professionals with no luck and great expence. I live in Seattle and haven't found anyone who is competent with stovebolts. Thanx TOM
