White on the exhaust pipe

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astaib
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White on the exhaust pipe

Post by astaib » Mon Aug 12, 2019 5:13 pm

Hello,

Can someone tell me what is the white trace on the exhaust pipe of my plane?

I heard that it is when you run too much LOP.

Thanks!
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Arnaud
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Steve
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Re: White on the exhaust pipe

Post by Steve » Mon Aug 12, 2019 10:42 pm

Arnaud:

The white deposit is from the lead in the fuel. If you run too rich or are burning oil you will see black soot, not a white deposit. My airplane's exhaust stack looks identical to yours. In this case a white deposit is a GOOD thing.

Steve
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