Weak Fire when Blipping
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Road Master
Joined: Jun 2008
Posts: 885
Likes: 3
From: Ledyard, CT
Weak Fire when Blipping
I'm trying to figure out if this is a problem or if it's just characteristic of a 2 cylinder engine. Sometimes when I go to blip the throttle when about to downshift, the bike will give a weak rev, almost like a misfire maybe. I can twist the throttle but there will be minimal increase in RPM.
It's always done it, but now that I have a tuner, I wonder if it's just an ECM parameter that can be changed.
Does my bike have an issue or is this normal?
It's always done it, but now that I have a tuner, I wonder if it's just an ECM parameter that can be changed.
Does my bike have an issue or is this normal?
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
You don't tell us what your tuner is or what mods have been done to your bike. Start by using your tuner to tune or optimise your bike, then see how it runs after that. Its not worth chasing a suspected problem until you have a reasonably stable set-up. If you've never used a tuner before, it's better to get some experience under your belt, before you chase shadows!
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Road Master
Joined: Jun 2008
Posts: 885
Likes: 3
From: Ledyard, CT
Sorry, posted this from my phone so maybe my signature didn't show. It's an 08 Nightster, so EFI. It's always been present since I had the bike, so I'm confident it's nothing with my mods. The bike was stock when I bought it. I've got a PCV as a tuning mod.
Could it be something with my throttle cables? I removed them over the winter when I swapped bars out, but like I said it's always done it, and I didn't notice anything out of the ordinary when doing the work.
Could it be something with my throttle cables? I removed them over the winter when I swapped bars out, but like I said it's always done it, and I didn't notice anything out of the ordinary when doing the work.
Last edited by ripto; Aug 20, 2017 at 01:33 PM.
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
Sorry, posted this from my phone so maybe my signature didn't show. It's an 08 Nightster, so EFI. It's always been present since I had the bike, so I'm confident it's nothing with my mods. The bike was stock when I bought it. I've got a PCV as a tuning mod.
Could it be something with my throttle cables? I removed them over the winter when I swapped bars out, but like I said it's always done it, and I didn't notice anything out of the ordinary when doing the work.
Could it be something with my throttle cables? I removed them over the winter when I swapped bars out, but like I said it's always done it, and I didn't notice anything out of the ordinary when doing the work.
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