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My M38 1952 fully restored runs like a top when i get it running but the initial warm up from cold takes several minutes. My current procedure is I pull choke out all the way and throttle 1 inch then engage starter.. It will crank up nicely but i have to take choke off and flutter the throttle for mintues to keep it cranked. If i put it in gear it will stall. is this the nature of the beast or other problems? thanks

Several things can cause your symptoms.

1-Heat riser mechanism in plenum below carb not warming plenum.
2-Not having the correct thick carb base gasket which not only insulates the carb from manifold heat but has a metal "V" device or defuser that assist with atomization of the gas at low RPMs.
3-Bypass hose for water pump missing.
4-Thermostat stuck open or missing.

Thanks Wesk! check in that order or doesnt matter?

3. Definitely have that . mark that off

will try the others

I listed them by order of level of difficulty. Easiest first is always a good choice.

This is the heat riser:


They came in two different arrangements on the spring.


This is the correct carb base gasket:

thanks so much with all your help!....

Wes is that insulator available anywhere???

I got mine from a surplus dealer a year or so ago. Picked up a few so I wouldn't come up short when I needed one in a hurry. Try the dealers and search with the part number I posted.

http://www.ebay.com/sch/i.html?_sacat=0 ... tor&_frs=1