Oliver 770 Gas trouble

wally72

New User
I have a Oliver 770 that will run fine when it is cold but when it gets hot I have to pull choke out to keep it running. The longer it runs the more I have to pull choke. It is not as bad in the winter time. I have blown out fuel line, cleaned tank and used carb cleaner to flush out carb. Any ideas?
 
Check the spark before you start it the first time that day. Then when it starts giving you problems stop and compare the spark. Your spark should be a blue/white in color and jump a 1/4 inch gap. If spark is good try pulling the gas cap off and see if that helps.
 
How close to the exhaust manifold is the fuel line?
Is the fuel line steel or has it been replaced with
copper?

If it's copper, go back with steel, get it far away
from any heat sources as practical.
 
or wrap the line in foil ,, or pik up the metal hoses on a bbq grill to slide over hose ,,.agreed with all other suggestions about manifold gaskets and weak spark problems , not sure , but most all gassers should have a porcelon block resister ??,,. this is why I hate gasssers ,btdt ,,with every durn gasser on the place ,,.keep hunting ,, you will get it running like a real champ ,, happy hunting
 
This gives me a lot of places to look for trouble. May be this weekend before I can get it out and try some of the things suggested. I'll let you know, Thanks to everyone!
 

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