Motorcycle Club » The Raider 1900

Raider Problems???

16 posts from 12 voices
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  1. RawenRaiter
    #

    Has anyone else experienced a "pop" or backfire thru the air filter when you really crack the throttle from low idle? Mine has done this since it was new. My dealer thought it was due to aftermarket exhaust but that isn't the case as it did it while being all stock. Seems to be a problem on hot days, never does it when its cool or I have the dealer check it out.

    Thanks
    RawenRaiter

  2. Suzhipiger
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    Hm...normally I'd blame the AIS but that seems to result more in popping out of the exhaust. You say this is happening through the air cleaner.

  3. Lezder
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    I from time to time have the same"Back fire" through the air cleaner; only when I crack the throttle at idle though. It has happened a half dozen times so far.

  4. macrozzfan
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    Has anyone else experienced a "pop" or backfire thru the air filter when you really crack the throttle from low idle? Mine has done this since it was new. My dealer thought it was due to aftermarket exhaust but that isn't the case as it did it while being all stock. Seems to be a problem on hot days, never does it when its cool or I have the dealer check it out.ThanksRawenRaiter
    You might have a bad ECU. It could be messing up your Air fuel ratios causing some sort of combustion problem.

  5. MorkKW
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    The general rule is, if you roll onto the throttle to a high RPM, the backfiring won't be present. But, if you do as you say...crack the throttle abruptly...you may get a backfire thru the air cleaner..... 95% of the time this is due to a lean running condition. You're feeding more fuel than the amount of air coming into the motor can handle. Removing from this conversation the possibility of a pinched hose, or bad air inlet, etc., bikes are not equal as they come from the factory, although, their set-up usually is fairly close from one bike to another with some being even leaner than others. There are a dozen "possibilities," but the most obvious would be an engine that's running too lean.

    This is just a "me" kind of thing, but I would at least consider opting for a K&N replacement air filter since it increases air flow to the engine noticeably vs. the Yammy filter. The added benefit, not that you need it, would be a 'slight' increase in performance. Purely as another thought, a close friend (and a Yammy dealer) has the Liner with the Cobra Fi2000 and after adding it he has never since experienced any backfiring as he did prior to adding it. He now experiences only occasional light popping during deceleration from his Cobra Slash Downs.

    While this may, or may not, correct the problem, it's at least some 'food for thought.'

    Stay well....and please keep everyone updated on any new findings. Thanks.

    Morg

  6. tawedhehuman
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    The general rule is, if you roll onto the throttle to a high RPM, the backfiring won't be present. But, if you do as you say...crack the throttle abruptly...you may get a backfire thru the air cleaner..... 95% of the time this is due to a lean running condition. You're feeding more fuel than the amount of air coming into the motor can handle. Removing from this conversation the possibility of a pinched hose, or bad air inlet, etc., bikes are not equal as they come from the factory, although, their set-up usually is fairly close from one bike to another with some being even leaner than others. There are a dozen "possibilities," but the most obvious would be an engine that's running too lean. This is just a "me" kind of thing, but I would at least consider opting for a K&N replacement air filter since it increases air flow to the engine noticeably vs. the Yammy filter. The added benefit, not that you need it, would be a 'slight' increase in performance. Purely as another thought, a close friend (and a Yammy dealer) has the Liner with the Cobra Fi2000 and after adding it he has never since experienced any backfiring as he did prior to adding it. He now experiences only occasional light popping during deceleration from his Cobra Slash Downs. While this may, or may not, correct the problem, it's at least some 'food for thought.' Stay well....and please keep everyone updated on any new findings. Thanks. Morg
    I read this post thru twice. Lean means too much air, not fuel. did i misunderstand this?

  7. kman
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    I would get a fuel manager. I've never had it happen and I have twisted as hard as is possible from idle many times. I have a FuelPak.

  8. tocdorvho
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    I read this post thru twice. Lean means too much air, not fuel. did i misunderstand this?
    You read it right and that is correct. Sounds weird but it could be the cause. But another cause could be the intake valve is not closed when the spark plug fires. There can be a bunch of reasons for this. Timing is off, valves are bent or just crap on your valves that prevent them from seating properly, emissions issues, air flow sensor problem...but it's probably not any of those. Sometimes, when the engine is not under load like when you blurp it to high rpms in neutral, you could get what is called valve float. It just means the lifters aren't staying in contact with the cam so the valves don't close when they should. That is most likely the cause and the solution is to not abuse your Raider.

    Doc

  9. RawenRaiter
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    Yeah, I don't know. I do know that abuse is not the cause. When I say "crack the throttle" I mean sitting at a stop light and just simply give it a quick twist that taises the RPM's 300-400. That is when it does it. As long as the engine is under load (going down the street or highway) it has never backfired through the airbox. Figured I would clarify........

  10. BIGtattj1
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    i got to clear this up.....
    when you snap the throttle from idle your letting in more air than fuel causing the LEAN condition and the "pop" or back fire thru the air cleaner.
    if this bike was carbureted instead of fuel injected you could richen the low side jet and stop it. but with the fuel injection you'll need a fuel manager to adjust your low side. the reason why it's not a problem when it's cold is because of the ambient air temp sensor richens the mixture when it reads below a certain temperature.

  11. BIGtattj1
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    you could get what is called valve float. It just means the lifters aren't staying in contact with the cam so the valves don't close when they should. That is most likely the cause and the solution is to not abuse your Raider. Doc
    really? at 1500 rpms? don't scare him with misinformation
    better keep it away from that rev limiter then ooops too late!

  12. Lezder
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    Yeah, I don't know. I do know that abuse is not the cause. When I say "crack the throttle" I mean sitting at a stop light and just simply give it a quick twist that taises the RPM's 300-400. That is when it does it. As long as the engine is under load (going down the street or highway) it has never backfired through the airbox. Figured I would clarify........
    That is what is happening with mine. its not a rpm wind up its more of the honda type twist on the throttle to keep things running out of habit quick little snap of the throttle at a stoplight to hear the exhaust crack but then it pops back through the air cleaner.

  13. Rit1r
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    I had about the same problem with the backfire through the air box under the same circumstances. Tightened down the exhaust head bolts and haven't had a problem since.

  14. LozdDok
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    Mine does it too,but only under a no-load scenario. Under a load sounds fine or better.I love this thing!

  15. tocdorvho
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    really? at 1500 rpms? don't scare him with misinformation better keep it away from that rev limiter then ooops too late!
    It wasn't misinformation. He didn't clarify that it was a few hundred Rs until after I posted and when he did he knew that wasn't the problem. "Really cracking the throttle" doesn' sound like a few hundred Rs. You had the luxury of knowing that. I didn't. Your post makes sense under those conditions. We're good.

    And the rev limiter? You did read the part about being in neutral and not under load right?

  16. HarlejSlajer
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    i got to clear this up..... when you snap the throttle from idle your letting in more air than fuel causing the LEAN condition and the "pop" or back fire thru the air cleaner. if this bike was carbureted instead of fuel injected you could richen the low side jet and stop it. but with the fuel injection you'll need a fuel manager to adjust your low side. the reason why it's not a problem when it's cold is because of the ambient air temp sensor richens the mixture when it reads below a certain temperature.
    This the most accurate info on this thread.

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