Originally Posted by DanH View Post
So, want to worry about blowing your sump to bits? The risk is found when cranking at low temperatures, with very, very little liquid fuel on the plenum floor.
Always enjoy reading DanH?s posts as he always does his homework ( his math calcs remind me of some long study sessions in college Algebra and Calculus).
So back to the purpose of the sniffle valve. Dan makes the interesting point that they prevent hydraulic lock and not necessarily to prevent explosions in the Sump. I?m trying to come up with the scenario that caused my Sump (explosion). I?ve had backfires that have been severe enough to split the welds on a stainless exhaust but this incident was different. For a backfire to blow the O rings off the tubes are the same forces at play but just timed differently with the intake valves open ?