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rebeltaz |
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rebeltaz Renault 5 Driver
Joined: 02 Jul 2005 Karma :
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Posted: 03:58 - 14 Sep 2021 Post subject: looking for help with VN1500 Fuel Injection issue |
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I've got a 2001 VN1500 Classic FI that runs great. The problem is that I have trouble starting it. I'm a carburetor guy, so I am lost with this fuel injection system. I will try to explain this the best I can, but since it's intermittent, it's hard...
It almost always starts fine the first time. It idles like it's on choke (carburetor guy, remember) for a few seconds and then drops the RPM down. It drops it too low though and dies. If I keep the throttle cracked open a small tad for a minute or so, though, when the RPM drops down, it's fine from there on out.
If I shut the bike off, though, and go to restart it - no matter how long or how short I wait - the bike will sometimes fire right up after a couple of revolutions. Sometimes, though, it will just spin over until it floods without ever hitting.
I had been pushing the start button as soon as I turned the ignition on so that the fuel pump didn't have time to push any fuel into the cylinders and that seemed to work - the bike fired every time, albeit it usually took a few revolutions.
Today, though, I thought I'd idle the bike up a tad to compensate for the dying when it idles down. Well, that fixed that, but then, it started doing the spinning over without starting thing. Before it flooded, I dropped the idle speed back down and bam! It started right up.
So it seems that with the throttle cracked open to far, the bike won't start and with it not cracked open far enough, the bike won't idle until it's warmed up. The problem is that there is no in between.
Can someone, anyone with experience with this bike specifically or fuel injection bikes in general offer me any advice?! This is driving me crazy!
Plus... it doesn't look good for a small engine mechanic to be riding a bike that won't start! lol ____________________ Derek Tombrello
www.ShelbyCycle.com (for profit)
www.RobotsAndComputers.com (just for fun)
Last edited by rebeltaz on 21:54 - 14 Sep 2021; edited 1 time in total |
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weasley |
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weasley World Chat Champion
Joined: 16 Oct 2010 Karma :
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davebike |
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davebike World Chat Champion
Joined: 15 Nov 2013 Karma :
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Posted: 07:31 - 14 Sep 2021 Post subject: |
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Has this suddenly come on?
Has the bike been standing? new to you?
I would wonder when the fuel filter was last changed and whether the tank is clean
Next step would be injector cleaner a tank of 97 and a fast run or Injectors out and ultrasonic cleaned
I don't think plugs but I check them and the Air cleaner unless you know they're good ____________________ Dave
NC750Xdct + others at work !
davebike1@gmail.com |
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yen_powell |
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yen_powell World Chat Champion
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jaffa90 |
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jaffa90 World Chat Champion
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Easy-X |
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Easy-X Super Spammer
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Posted: 10:48 - 14 Sep 2021 Post subject: |
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Gap and clean the spark plugs. Not sure that'll fix it but it'll keep you busy for 5 mins ____________________ Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter |
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rebeltaz |
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rebeltaz Renault 5 Driver
Joined: 02 Jul 2005 Karma :
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rebeltaz |
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rebeltaz Renault 5 Driver
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rebeltaz |
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rebeltaz Renault 5 Driver
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rebeltaz |
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rebeltaz Renault 5 Driver
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rebeltaz |
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rebeltaz Renault 5 Driver
Joined: 02 Jul 2005 Karma :
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Posted: 21:53 - 14 Sep 2021 Post subject: |
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Just thinking out loud here... I think the exhaust pipes on this are after market (Vance Hines). I know that it pops more on deceleration - I always assumed because of this. Is it possible that a reduction in back pressure is causing both of these issues as well? And if that's the case, there isn't anything I can do about it, is there? ____________________ Derek Tombrello
www.ShelbyCycle.com (for profit)
www.RobotsAndComputers.com (just for fun) |
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WD Forte |
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WD Forte World Chat Champion
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rebeltaz |
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rebeltaz Renault 5 Driver
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Kawasaki Jimbo |
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Kawasaki Jimbo World Chat Champion
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rebeltaz |
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rebeltaz Renault 5 Driver
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weasley |
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weasley World Chat Champion
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Weisse Schlange |
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Weisse Schlange Spanner Monkey
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Robby Dirty Old Man
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rebeltaz |
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rebeltaz Renault 5 Driver
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Old Thread Alert!
The last post was made 2 years, 261 days ago. Instead of replying here, would creating a new thread be more useful? |
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