Quote:
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Originally Posted by gmcjetpilot
(after a long wet taxi) During run-up check the carb ice by leaving it on for more than a fraction of second. Leave it on an note the RPM drop (fixed) or MAP drop and than wait to see of the RPM/MAP rise while the heat is still on. Than after the run up note any change. If idle RPM or MAP is higher after the run-up (and carb ice) you most likely burned ice off.
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George, or others...
I've heard on this forum (and elsewhere) that RVs don't show much (if any) RPM drop when testing the carb heat during run-up, for whatever reason.
1. If this is true, is that because the carb heat is less effective in an RV? Would this suggest using a feed off the heat muff, like some have suggested earlier in this thread, to be sure you're getting good heat to the carb?
2. If this is true, does having the carb heat on for more than one fraction of a second during run-up (which I agree is essential to usefully test carb heat) going to be of help in an RV?
Just curious. Maybe I've got different carb. issues confused.
Linear Mode
