smell exaust gasses after engine shut down

[4eyes]

Does anyone have any idea, why my garage smells of exaust gases after I shut engine. This just started about a month ago.I have a Q45 1991 active with 75K.When I start engine with in a few minutes after shut down, I smell these gasses inside the cabin.

Ron

[DAEDALUS]

Probably a leak in one of the exhaust manifold gaskets.

[4eyes]

I don't hear any excessive noise that would relate to a leak.

Ron

[96Qowner]

Exhaust gases? Aren't you sure it isn't gasoline or burned oil?

If it's gasoiline, you could have a leaky fuel hose under then plenum. Even though you only have 75K on it, it's been 14 years. Hoses get old and shrink and start leaking.

If it's oil, you could have a leaky valve cover. Same thing applies - it's been 14 years - seals and hoses tend to start failing at about the same time.