1991 evo
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Stage IV
Joined: Feb 2011
Posts: 4
Likes: 0
From: Utah
1991 evo
I have a 91 Heritage. If the outside temp is 50 or less it will not fire. Battery fully charged turns over like gang busters. If it warms up to 55 it fires no problem. It smells like it is Flooded. Any ideas????
Elite HDF Member
Joined: Jul 2010
Posts: 3,830
Likes: 302
From: Lorain Ohio
you might get more info in the EVO section...I have a 99 an it's getting harder an harder to keep running as the temp drops...tonight I sprayed some starting fluid around the intake with the throttle turned up a tad an found I have an intake leak. Cool air packs the combustion chamber denser so your mixture will be a little lean, a little more lean when it's cold.
Road Master
Joined: Jul 2009
Posts: 964
Likes: 9
From: Savannah, TN
My 98 was so cold natured it became a joke with some bros... I was able get it started, but geeze it would take a while to get it running smooth. Played with the choke cable and the carb settings and things settled down. Stupid question maybe, but has your choke cable broken or loose?
Seasoned HDF Member
Joined: Jun 2010
Posts: 9,332
Likes: 3,873
From: Upstate New York
My '94, with three different motors and two carburetors over the years I've owned it is very cold blooded below 50F. It will start if I prime it with a few squirts of the accelerator pump and full choke, but it will stall once it burns off the priming shots. It may do this three or more times until it will finally give in and stay running.
Stellar HDF Member
Joined: Oct 2010
Posts: 2,599
Likes: 182
From: east texas
the choke is actually a enrichment device.
it works with the throttle closed.
If you are twisting the throttle while cranking , it doesn't do so well.
"cold start" a couple of throttle blips , then leave the throttle closed while cranking
it works with the throttle closed.
If you are twisting the throttle while cranking , it doesn't do so well.
"cold start" a couple of throttle blips , then leave the throttle closed while cranking
Seasoned HDF Member
Joined: Mar 2014
Posts: 15,363
Likes: 24,235
From: NC, USA
I had a new 91 in an unheated garage in Mass. Don't recall any cold start problems and I rode all year. The enrichener **** was a bitch to get right. If you left it out too long you fouled plugs, not long enough it would cut off ajnd sputter. I switched the carb out for an S&S Super E and never had a problem for the next 8 years.
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