Fuel starvation?
Thread Starter
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Intermediate
Joined: Aug 2020
Posts: 41
Likes: 14
From: Louisville, KY
Fuel starvation?
Just finished up my 883 to 1200 upgrade.
bike has straight pipes from previous owner. I added a hi flo pod filter.
So. Rejetted to 48 slow jet and 180 main jet.
now, after a few miles at highway speeds,, it sputters and dies. Restarts after a few minutes
Im Thinking fuel starvation. will too large of a main jet cause this?
bike has straight pipes from previous owner. I added a hi flo pod filter.
So. Rejetted to 48 slow jet and 180 main jet.
now, after a few miles at highway speeds,, it sputters and dies. Restarts after a few minutes
Im Thinking fuel starvation. will too large of a main jet cause this?
Thread Starter
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Intermediate
Joined: Aug 2020
Posts: 41
Likes: 14
From: Louisville, KY
Ignition Module...
Rebuilt carburetor. Idles fine.
Ran great on short, couple of mile ride..
so decided to take it on the road for a longer test..
Sure enough, after about 30 minutes it dies.
wait several minutes then I'm back on the road. Ignition module?
Contacted S&S Cycles for help, since thats whose upgrade I used..
They said to upgrade ignition module to one that is tunable. Any recommendations out there?
Ran great on short, couple of mile ride..
so decided to take it on the road for a longer test..
Sure enough, after about 30 minutes it dies.
wait several minutes then I'm back on the road. Ignition module?
Contacted S&S Cycles for help, since thats whose upgrade I used..
They said to upgrade ignition module to one that is tunable. Any recommendations out there?
HDF Community Team
Joined: Dec 2011
Posts: 8,547
Likes: 3,974
From: San Diego, CA
What year is your bike? Some years had ignition modules in the timing nosecone and failed due to heat. Sounds like that's your problem.
48 pilot is more than you need, most of us use a 45.
My recent 1250 upgrade is using a 45 pilot jet, 190 main jet, and idle mix set at 3 1/8 turns out. At 1100 miles, plugs look good:
John
48 pilot is more than you need, most of us use a 45.
My recent 1250 upgrade is using a 45 pilot jet, 190 main jet, and idle mix set at 3 1/8 turns out. At 1100 miles, plugs look good:
John
Last edited by John Harper; Aug 10, 2021 at 04:08 PM.
Thread Starter
|
Intermediate
Joined: Aug 2020
Posts: 41
Likes: 14
From: Louisville, KY
What year is your bike? Some years had ignition modules in the timing nosecone and failed due to heat. Sounds like that's your problem.
48 pilot is more than you need, most of us use a 45.
My recent 1250 upgrade is using a 45 pilot jet, 190 main jet, and idle mix set at 3 1/8 turns out. At 1100 miles, plugs look good:
John
48 pilot is more than you need, most of us use a 45.
My recent 1250 upgrade is using a 45 pilot jet, 190 main jet, and idle mix set at 3 1/8 turns out. At 1100 miles, plugs look good:
John
I ended up using the 45 slow that was in the rebuild kit, but kept the 180 main.
Road Master
Joined: Jun 2021
Posts: 756
Likes: 344
From: florida
Trending Topics
Bikes dying once hot usually point to ignition failure, not fuel issue. If it was fuel starvation you'd notice much sooner. With the petcock off on my CV I'll get like 3 blocks before it dies.
Most common failure when the bike is hot is the ignition module, under the nose cone depending on your year. What year is it? Are you doing the break-in miles now, or are those done already? If 86-03, did you retard the ignition module? If 04+ did you get a flash tune done?
Most common failure when the bike is hot is the ignition module, under the nose cone depending on your year. What year is it? Are you doing the break-in miles now, or are those done already? If 86-03, did you retard the ignition module? If 04+ did you get a flash tune done?
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Thread Starter
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Intermediate
Joined: Aug 2020
Posts: 41
Likes: 14
From: Louisville, KY
Bikes dying once hot usually point to ignition failure, not fuel issue. If it was fuel starvation you'd notice much sooner. With the petcock off on my CV I'll get like 3 blocks before it dies.
Most common failure when the bike is hot is the ignition module, under the nose cone depending on your year. What year is it? Are you doing the break-in miles now, or are those done already? If 86-03, did you retard the ignition module? If 04+ did you get a flash tune done?
Most common failure when the bike is hot is the ignition module, under the nose cone depending on your year. What year is it? Are you doing the break-in miles now, or are those done already? If 86-03, did you retard the ignition module? If 04+ did you get a flash tune done?
It's an '01, and No I didn't retard the timing.
S&S Cycles say i should upgrade ignition to a tunable model.
Thread Starter
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Intermediate
Joined: Aug 2020
Posts: 41
Likes: 14
From: Louisville, KY
Well, let’s finish this thread.
It seems I fell into the tunnel vision trap.
It was a fuel starvation problem caused by me kinking the fuel line under the carb area.
I was so focused on it being something I did wrong on the upgrade that I failed to check the basics.
It seems I fell into the tunnel vision trap.
It was a fuel starvation problem caused by me kinking the fuel line under the carb area.
I was so focused on it being something I did wrong on the upgrade that I failed to check the basics.