[ferguson]

Hello everyone. I have a question about some racing fuel I just purchased. I have just built a 72 Group 2 Capri with an iron head 2.9 V6 and dry sump. I started out running C10 fuel cut with pump gas and had to switch over too MS 109Vp fuel cut 50% with pump gas. I have now noticed a lot of fuming coming out of the dry sump tank vent which smells like MS 109.
There doesn't appear to be any fuel in the oil that I can see or feel. Maybe the dry sump is pulling some combustion gases thru the rings. I'm not sure what kind of vacuum I am running but I know it was not fuming with the C10 in it. Didn't know if any one had any thoughts. Thanks