RE: Re[2]: [ihc] Pete's Choking!

["Jim Grammer" <jgrammer@xxxxxxxxxx>]

>-----Original Message-----
>From: owner-ihc@domain.elided [mailto:owner-ihc@domain.elided]On Behalf Of
>ken.dunnington
>Sent: Thursday, September 30, 2004 9:05 AM

>I can't say as to the MC carb but it's common to have a small vacuum
>pulling through the choke bimetallic spring housing on those carbs
>that use the heated air tube.  The tube is heated by the exhaust
>cross-over in the intake.  The vacuum draws heated air over the
>spring to affect its expansion, opening the choke and IIRC, closing
>off this vacuum port.

Seems logical. I know mine was sucking wind after the choke was fully open,
as I found it while setting the idle speed/mixture when first installing the
carb. A vinyl cap was the 'field expedient' fix, and has remained so ;) I
also discovered that the carb jetting is lean enough that EGR wasn't an
option. Dunno if I feel like addressing that, until it starts raining I just
wanna drive the thing. If I get a wild hair I'll pull a plug and see what it
looks like. Or more likely, I'll just drive it some more :) It's not like
it's going on any long trips, with the 50W oil holding the dead cam bearings
at bay.

Jim