MM Fuel injection Issues.
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Joined: Aug 2017
Posts: 76
Likes: 5
From: Michigan
MM Fuel injection Issues.
Hello,
I had the bike out Saturday for about a 40 mile ride and everything went great. I stopped to eat and when I jumped back on the bike the idle was very low (500RPM) and the bike was chugging and backfiring a little. I had to limp home on the bike and it felt like it was missing. When I got home the bike now struggles to idle and stay running.
As a background, The bike is a 2000 EG EFI with a PC5, air cleaner and V&H 2-1. Engine temp sensor, CPS, and battery have been replaced recently. There is spark in both cylinders and plug wires were replaced last year. there are no codes and the only historical code was the CPS, and that is why it was replaced.
I have a funeral for my best friend next week and I have to have the bike ready. The dealer cannot assure that I will have it by then so I need to fix it myself. Any suggestions or guidance is appreciated.
I had the bike out Saturday for about a 40 mile ride and everything went great. I stopped to eat and when I jumped back on the bike the idle was very low (500RPM) and the bike was chugging and backfiring a little. I had to limp home on the bike and it felt like it was missing. When I got home the bike now struggles to idle and stay running.
As a background, The bike is a 2000 EG EFI with a PC5, air cleaner and V&H 2-1. Engine temp sensor, CPS, and battery have been replaced recently. There is spark in both cylinders and plug wires were replaced last year. there are no codes and the only historical code was the CPS, and that is why it was replaced.
I have a funeral for my best friend next week and I have to have the bike ready. The dealer cannot assure that I will have it by then so I need to fix it myself. Any suggestions or guidance is appreciated.
Grand HDF Member
Joined: May 2010
Posts: 3,599
Likes: 5,175
From: SWMO
I'd try it without the PC5 first to see if it's the problem. I used to have a 2000 RK with the MM. I got tired of fighting it and swapped it to carb. I'm surprised a dealer would consider working on an 18 yr. old MM system. Usually, no one wants to touch those tar babies.
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Joined: Aug 2017
Posts: 76
Likes: 5
From: Michigan
I will try without the PC5 tomorrow. The unit was replaced last year due to the older one going out after years. I don't have the time to switch to carb right now otherwise I would. Thank you.
If the rubber boot that covers the ECM was missing, you can have water in the ECM. That was a very common problem because the MM ECM is mounted with the connector up and it should have been mounted down.
If you wind up needing an ECM, PM me.
If you wind up needing an ECM, PM me.
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Stellar HDF Member
Joined: Sep 2011
Posts: 3,125
Likes: 1,749
From: In The Woods, PA
I had the same issues with a '98 ultra I had. Turned out that my ECM went bad. It was a carb conversion time.
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Stellar HDF Member
Joined: Jan 2009
Posts: 2,578
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From: On a Lake, not far from the Gulf
You already did the two things that i always suggest, Check battery, and trouble codes. Next thing is clean the throttle body, including the two air bleeds at the top of the mouth, and clean and inspect the IAC. Then I would try taking the PCV out of line. I doubt that is your problem though. I would suspect a fuel problem.
Other possibilities:
Dirty air cleaner
Dirty Fuel filter
Holes in hoses inside tank (open can and listen for gurgling)
Bad Fuel Pressure Regulator
Throttle Position Sensor bad or misaligned.
Good Luck.
Other possibilities:
Dirty air cleaner
Dirty Fuel filter
Holes in hoses inside tank (open can and listen for gurgling)
Bad Fuel Pressure Regulator
Throttle Position Sensor bad or misaligned.
Good Luck.
Road Master
Joined: Jul 2010
Posts: 1,065
Likes: 68
From: Hawaii
You already did the two things that i always suggest, Check battery, and trouble codes. Next thing is clean the throttle body, including the two air bleeds at the top of the mouth, and clean and inspect the IAC. Then I would try taking the PCV out of line. I doubt that is your problem though. I would suspect a fuel problem.
Other possibilities:
Dirty air cleaner
Dirty Fuel filter
Holes in hoses inside tank (open can and listen for gurgling)
Bad Fuel Pressure Regulator
Throttle Position Sensor bad or misaligned.
Good Luck.
Other possibilities:
Dirty air cleaner
Dirty Fuel filter
Holes in hoses inside tank (open can and listen for gurgling)
Bad Fuel Pressure Regulator
Throttle Position Sensor bad or misaligned.
Good Luck.
and the pump from fuelpumpfactory. All these components looks identical to the OEM which isn't available and my original lines didn't appear to be leaking. I did take it to the dealer for a dyno run and the curves look good and the bike runs great.