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wgill10(at)comcast.net
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 Posted: Tue Sep 15, 2009 6:03 pm Post subject: Engine Hesitation |
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Installing a cooling shroud for the mechanical fuel pump should help according to Don at AFP. I have not done this yet, but intend to do so. I have a Lycoming IO-390 with AFP fuel injection and the engine stumble has been a common occurrence following most summer flights or after engine start with long ilde periods such as OSH taxi for departure. The engine stumble also occurs when fuel flow is very low (loitering with fuel flow at less than 6.8 gal/hr). There is NO hesitation during power application (take-off).
Bill
RV-7
500 hours since 11/2007
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pitts_pilot(at)bellsouth.
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| Posted: Wed Sep 16, 2009 9:29 pm Post subject: Engine Hesitation |
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I'm wading through a whole slew of emails after a trip, so this may be
co vered. But .....
Clean out your shop-vac really good, and hook the hose up to blow, not
suck. Place the hose in the intake and seal with some rags. Turn on
the vacuum (that's now a pump!) and spray liberally around the intake
system with soapy water.
Linn
rveighta(at)comcast.net wrote:
[quote] Mike, I'm not sure what you mean by checking for an intake leak. How do
you go about doing that?
Walt
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