Condensation on intake manifold?

johnny248 · Post by **johnny248** » Mon Dec 14, 2015 11:23 pm

Has anyone seen condensation droplets on the intake manifold after riding? I assumed this was normal from cold air and fuel rushing through it and causing conde sarion on the outside, but then I asked a couple of people and they said they haven't noticed it. Is this normal or not? Could there be a great problem which would cause this?

benji · Post by **benji** » Tue Dec 15, 2015 1:19 am

Happened to me the other day, and all the time w airtools outside. It's just the air rushing through there causing it to collect. When I was young I had a job mounting tires on cars and the air impact gun would freeze to my hand in winter. I don't think it's bad, just watch out for lean conditions.

kuromi · Post by **kuromi** » Tue Dec 15, 2015 6:12 am

The venturi effect that sucks petrol up from bowl works on pressure differences and can drop the ambient air temp by 30-40F.
Also as said below the cool air rushing through the manifold.
This results in a cooling of the carb body and manifold. In extreme circustances you can get ice forming in your carbs.

johnny248 · Post by **johnny248** » Tue Dec 15, 2015 2:50 pm

Gotcha. Just making sure there isn't some sort of problem.

Wheelman-111 · Post by **Wheelman-111** » Thu Dec 17, 2015 12:51 am

Greetings:

Piston-prop airplanes have electric coil carb heaters for this reason; otherwise carbs ice up at altitude. Honda's fan-forced cooling system exhausts right at the carb for the same reason. Humid conditions exacerbate the condensation.

benji · Post by **benji** » Fri Dec 18, 2015 12:42 am

Ya my old 75 courier had one on the carb manifold too. Leaked haha.

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Condensation on intake manifold?

Condensation on intake manifold?

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