calling all engine gurus.

[bertsmobile1]

The carbs for gravity feed and pump feed are different to account for different fuel supply pressures .

 

[wheelie]

The carbs for gravity feed and pump feed are different to account for different fuel supply pressures .

working fine on gravity so can't complain.

 

[sgkent]

the only time fuel ends up in any crankcase due to the fuel pump is a perforated diaphragm. Usually it is a problem in the carb when gas is in the oil.

 

[sgkent]

the only time fuel ends up in any crankcase due to the fuel pump is a perforated diaphragm. Usually it is a problem in the carb when gas is in the oil.

 

[wheelie]

the only time fuel ends up in any crankcase due to the fuel pump is a perforated diaphragm. Usually it is a problem in the carb when gas is in the oil.

yes as I mentioned.. Wound up I had both.. Fixed the carb and still had the issue of gas in the crank case AND the issue of when running it would run smooth for a bit then start the popping and coughing and smoking.. and eventually shut down.,.. Carb was not doing that..