Bike sounds like its misfiring/sputtering - Page 2 - KawiForums - Kawasaki Motorcycle Forums
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post #11 of 18 (permalink) Old 05-17-2018, 01:33 PM
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I think tonight im going to put my old plugs back in and see if it fixes it, i have a gut feeling i just got faulty spark plugs
It's possible. Double check your plug boots and plug connectors, one might not be fully seated.

Going forward, I wouldn't bother with the iridium plugs though, you will foul the plug out on a carbed bike long before you wear the electrode out and extended electrode life is really the only reason for platinum or iridium plugs.

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post #12 of 18 (permalink) Old 05-17-2018, 01:45 PM Thread Starter
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Originally Posted by ItsCuzImmaTURK View Post
I think tonight im going to put my old plugs back in and see if it fixes it, i have a gut feeling i just got faulty spark plugs
It's possible. Double check your plug boots and plug connectors, one might not be fully seated.


Going forward, I wouldn't bother with the iridium plugs though, you will foul the plug out on a carbed bike long before you wear the electrode out and extended electrode
life is really the only reason for platinum or iridium plugs.
Sorry that sounded a little bit foreign to me, plug boot? Is that the bottom of the plug? I mean i gapped them to .30, my buddy installed them for me, he said he knows he checked the plug gap and the coils are in tight
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post #13 of 18 (permalink) Old 05-17-2018, 01:56 PM
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Sorry that sounded a little bit foreign to me, plug boot? Is that the bottom of the plug? I mean i gapped them to .30, my buddy installed them for me, he said he knows he checked the plug gap and the coils are in tight
Plug boot is the rubber end of the stick coil that engages over the spark plug. It has the contacts inside which fire the plug.

you mean .030 gap right ? .3 would be 3/10ths of a inch and a HUGE gap.

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post #14 of 18 (permalink) Old 05-17-2018, 02:10 PM Thread Starter
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Sorry that sounded a little bit foreign to me, plug boot? Is that the bottom of the plug? I mean i gapped them to .30, my buddy installed them for me, he said he knows he checked the plug gap and the coils are in tight
Plug boot is the rubber end of the stick coil that engages over the spark plug. It has the contacts inside which fire the plug.

you mean .030 gap right ? .3 would be 3/10ths of a inch and a HUGE gap.
Yeah sorry, .030 lol, but if it was plug wouldnt it be boggy revving up in nuetral? It revs up great in neutral, its just when im in gear that it bogs when i go full throttle, is the fuel pump screen easy to get to? I heard cleaning it might help
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post #15 of 18 (permalink) Old 05-17-2018, 02:15 PM
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Yeah sorry, .030 lol, but if it was plug wouldnt it be boggy revving up in nuetral? It revs up great in neutral, its just when im in gear that it bogs when i go full throttle, is the fuel pump screen easy to get to? I heard cleaning it might help

Maybe, but a free spinning engine can act differently than one under load.

If it was running fine before you changed the plugs I would take a good hard look at what was removed/changed during the plug install.

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with "gun free zone" signs. That's the priorities of the
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post #16 of 18 (permalink) Old 05-18-2018, 12:25 AM Thread Starter
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Replaced my plugs again, still sputtering above 5k at half throttle or more, what could be next?
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post #17 of 18 (permalink) Old 05-18-2018, 01:21 PM Thread Starter
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Put my old plugs in, still sputtering, getting an oil change, new chain and more stretch tomorrow, getting the carburetor and fuel pump/filter cleaned as well, hopefully it fixes the issue
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post #18 of 18 (permalink) Old 05-18-2018, 06:14 PM
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Weird, I wonder if some gunk came loose in the fuel system and is now clogging one of the carbs. Strange.

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