GUNNY 155
Member
- 238
- 4
- 18
- Location
- elgin illinois
So if I understand things correctly you have tried 2 carbs one being rebuilt and one from VPW both with the same results. You have the correct base gasket. So to me that rules out the carb as the problem. One thing you said is that the flooding is instantaneous and based on your description is also copious. That to me says fuel pump(s). I would get rid of the electric pump and current mechanical pump if it is still in place and get a replacement mechanical pump. The ONE that actually is called for with the M37. If you have the OEM dual diaphragm pump body you can get a rebuild kit from an outfit called Then and Now Automotive. www.then-now.com they have rebuild kits designed for fuels with ethanol so the soft parts do not degrade over time. Kits are $70.00. You can also send them your pump and they will rebuild it. A lot of guys do not want to spend what a NOS or quality rebuilt pump costs and go with the electric pump or pump found on the industrial version of the Dodge 230 CI engine. I have seen a lot of postings dealing with fuel and pump problems. When I did my frame off restoration I stayed strictly GI and have never had a problem. No flooding, no vapor lock, no hard starts. Last, though this is a shot in the dark make sure your gas cap is properly vented.