Doesn't start when warm/hot
Thread Starter
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Novice
Joined: Feb 2019
Posts: 18
Likes: 1
From: Netherlands
Doesn't start when warm/hot
Hello,
My 73 Shovelhead runs and idles good, but doesn't start when the bike is warm. Even after a small 3 minute ride, the bike is 'warm enough' to have no start.
When the bike is stonecold, it starts, with the enrichener on, within 1 or 2 kicks after 2 sprays and 2/3 prime kicks.
The plugs are sooty black.
I remember it didn't have problems with starting the bike a few years ago when being warm/hot.
No throttle, just ingnition on and 1 kick. Does anyone know where to look at?
Kickstart
S&S Super E
My 73 Shovelhead runs and idles good, but doesn't start when the bike is warm. Even after a small 3 minute ride, the bike is 'warm enough' to have no start.
When the bike is stonecold, it starts, with the enrichener on, within 1 or 2 kicks after 2 sprays and 2/3 prime kicks.
The plugs are sooty black.
I remember it didn't have problems with starting the bike a few years ago when being warm/hot.
No throttle, just ingnition on and 1 kick. Does anyone know where to look at?
Kickstart
S&S Super E
Thread Starter
|
Novice
Joined: Feb 2019
Posts: 18
Likes: 1
From: Netherlands
Hmm, I will do a leak test and have an extra look at the intake.
I have tried to start the bike with the enrichener on when it was hot, no effect.
Read on the internet that it could maybe a vapor lock? Noticed that the fuel line is very close to the rear cylinder from the fuel valve.
I have tried to start the bike with the enrichener on when it was hot, no effect.
Read on the internet that it could maybe a vapor lock? Noticed that the fuel line is very close to the rear cylinder from the fuel valve.
Road Captain
Joined: Jul 2021
Posts: 605
Likes: 441
From: BRIGHTON, ENGLAND
bet your running an S&S Boat anchor,....
get yaself a Lectron, has a propper choke, first time kick, better power, performance & MPG,.... made in Texas
best carbs I have ever used, had the all, SU, Harley CV, Mikunis, S&S, Screeming Egal the lot,... none can touch a Lectron,...
had one on my Shovelhead for 6 years now, have NEVER had to adust it FROM THE BOX & still is perfect,....
well worth trying
get yaself a Lectron, has a propper choke, first time kick, better power, performance & MPG,.... made in Texas
best carbs I have ever used, had the all, SU, Harley CV, Mikunis, S&S, Screeming Egal the lot,... none can touch a Lectron,...
had one on my Shovelhead for 6 years now, have NEVER had to adust it FROM THE BOX & still is perfect,....
well worth trying
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Seasoned HDF Member
Joined: Jul 2014
Posts: 8,590
Likes: 3,361
From: Cental, MI
bet your running an S&S Boat anchor,....
get yaself a Lectron, has a propper choke, first time kick, better power, performance & MPG,.... made in Texas
best carbs I have ever used, had the all, SU, Harley CV, Mikunis, S&S, Screeming Egal the lot,... none can touch a Lectron,...
had one on my Shovelhead for 6 years now, have NEVER had to adust it FROM THE BOX & still is perfect,....
well worth trying
get yaself a Lectron, has a propper choke, first time kick, better power, performance & MPG,.... made in Texas
best carbs I have ever used, had the all, SU, Harley CV, Mikunis, S&S, Screeming Egal the lot,... none can touch a Lectron,...
had one on my Shovelhead for 6 years now, have NEVER had to adust it FROM THE BOX & still is perfect,....
well worth trying
or my Properly tuned, and Installed S&S...both a "B" and an "E"... hell even my Butterfly Screamin Eagle (Andrews Flowmaster)
the Key is Proper Installation and Tuning..Real Tuning!!!
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Stellar HDF Member
Joined: May 2018
Posts: 2,170
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From: australia
s&s b runs perfect on a stock 80 had it for 35yrs
Club Member
Joined: Mar 2009
Posts: 66,110
Likes: 51,396
From: Niles Canyon Ca.
Hmm, I will do a leak test and have an extra look at the intake.
I have tried to start the bike with the enrichener on when it was hot, no effect.
Read on the internet that it could maybe a vapor lock? Noticed that the fuel line is very close to the rear cylinder from the fuel valve.
I have tried to start the bike with the enrichener on when it was hot, no effect.
Read on the internet that it could maybe a vapor lock? Noticed that the fuel line is very close to the rear cylinder from the fuel valve.