P337 Question

[aldoradave]

Today on a flight from KHMT to KSGU, I was setting the mixture on the rear engine at 13,500 MSL. Maybe a bit too far, but I got a burp from the motor, then a short puff of exhaust gas in the cabin. That dissipated quickly but was more than a bit worrisome.

I know that the pressurization comes from the turbo and a number of valves, which a "burp" could cause to momentarily open. Has anyone else had this problem or a solution?

Thanks in advance,


Dave Dillehay
N84E