cold start hell help!!!!!
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6th Gear
Joined: Mar 2013
Posts: 10
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From: pa
cold start hell help!!!!!
On the first start of the day my 02 heritage sputters and backfires thru the exhaust. I put new plugs in and new air filter, also had it checked for intake leaks there were none. It only does this for a short time then is fine all dsy even if it sits for 3-4 hours. Please help me figure this out
Stellar HDF Member
Joined: Feb 2014
Posts: 2,710
Likes: 529
From: Lethbridge, Alberta Canada
After my HD dealer installed the Stage 4 race kit on my 2014 Breakout, I too had problems right after each FIRST (only) cold start of the day.
The bike would start right away, but the rpm would "hunt" for a couple of minutes, and the bike had to be nursed to keep it from stalling.
Then an expert tuner, Mike Lozano, who happens to have his shop near where I live, did his tune on the bike. TOTALLY resolved the problem.
In looking at the Power Vision software afterwards, I could see he changed the percent enrichment versus ambient outdoor temperature, for almost all the cells in that table.
Now, instant start, and instant stable rpm and instant drivability.
Get a GOOD tuner to tune that problem out.
Edit: Sorry, I did not ask if your bike is fuel injected or not - I assumed it was. If not, disregard what I said.
Jim G
The bike would start right away, but the rpm would "hunt" for a couple of minutes, and the bike had to be nursed to keep it from stalling.
Then an expert tuner, Mike Lozano, who happens to have his shop near where I live, did his tune on the bike. TOTALLY resolved the problem.
In looking at the Power Vision software afterwards, I could see he changed the percent enrichment versus ambient outdoor temperature, for almost all the cells in that table.
Now, instant start, and instant stable rpm and instant drivability.
Get a GOOD tuner to tune that problem out.
Edit: Sorry, I did not ask if your bike is fuel injected or not - I assumed it was. If not, disregard what I said.
Jim G
Last edited by JimGnitecki; Aug 12, 2014 at 05:00 PM.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
First of all did this just occur on it's own or did it start happening after a part was added or ? Second of all is this bike carburated or fuel injected? Thirdly what, if any, modifications from stock have been performed?
Thread Starter
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6th Gear
Joined: Mar 2013
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From: pa
New air filter and plugs put in. No other changes. Before the filter and plugs it had a slight hiccup at cold temps in am or night. That stopped now I have this. It is carbureted
Last edited by 02 heritage; Aug 13, 2014 at 11:22 AM.
Road Master
Joined: Feb 2013
Posts: 993
Likes: 1
From: columbus, ohio
After my HD dealer installed the Stage 4 race kit on my 2014 Breakout, I too had problems right after each FIRST (only) cold start of the day.
The bike would start right away, but the rpm would "hunt" for a couple of minutes, and the bike had to be nursed to keep it from stalling.
Then an expert tuner, Mike Lozano, who happens to have his shop near where I live, did his tune on the bike. TOTALLY resolved the problem.
In looking at the Power Vision software afterwards, I could see he changed the percent enrichment versus ambient outdoor temperature, for almost all the cells in that table.
Now, instant start, and instant stable rpm and instant drivability.
Get a GOOD tuner to tune that problem out.
Edit: Sorry, I did not ask if your bike is fuel injected or not - I assumed it was. If not, disregard what I said.
Jim G
The bike would start right away, but the rpm would "hunt" for a couple of minutes, and the bike had to be nursed to keep it from stalling.
Then an expert tuner, Mike Lozano, who happens to have his shop near where I live, did his tune on the bike. TOTALLY resolved the problem.
In looking at the Power Vision software afterwards, I could see he changed the percent enrichment versus ambient outdoor temperature, for almost all the cells in that table.
Now, instant start, and instant stable rpm and instant drivability.
Get a GOOD tuner to tune that problem out.
Edit: Sorry, I did not ask if your bike is fuel injected or not - I assumed it was. If not, disregard what I said.
Jim G
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Stellar HDF Member
Joined: Feb 2014
Posts: 2,710
Likes: 529
From: Lethbridge, Alberta Canada
can you tell me how much he changed the % enrichment? like where it started and where it was finally set? i'm having a similar issue where it starts fine, then at as it approaches 100 degrees it will start having sputtering issues and i have to be on the throttle a little to keep it going. after a few moments, it will idle fine, but it seems to be in certain temp ranges.
Jim G
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Thread Starter
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6th Gear
Joined: Mar 2013
Posts: 10
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From: pa
On the first start of the day my 02 heritage sputters and backfires thru the exhaust. I put new plugs in and new air filter, also had it checked for intake leaks there were none. It only does this for a short time then is fine all dsy even if it sits for 3-4 hours. Please help me figure this out
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