Frosty intake manifold

D

deetz

Junior Member
Was working on a friend's car (which was running poorly) and noticed that the intake manifold frosted-up when the car was first started. Frost stayed there for quite a while till the engine was good and warm. Thoughts, anyone?
 
Intake icing doesn't always lead directly to performance issues. Sometimes it's just a byproduct of your ambient temp and humidity. This problem is more common on cars that use an air filter. It may also indicate a poor interface between the intake and exhaust manifolds.
 
Thanks. Just wondering if it might be related to carbon build-up in the combustion chamber. The plugs were pretty sooty.
 
old vw beetles with single barrel carbs always froze up.
i havent had a model a do that. i would guess, like said above, temp and humidity. let it warm up.

edit

is probably why ford bolted it to the exhaust manifold.
 
Intake icing is a cause of poor performance, intake heating is common. Make sure your intake is bolted tightly to you exhaust manifold.

Cold intake air causes poor atomization of the fuel,it is a cause of hesitation.
 
I believe all of you, but this is a first for me!

Even at my age, you learn something every day.

Enjoy.
 
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