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Bike feels 'weird'

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Ant132
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PostPosted: 18:58 - 27 Jun 2009    Post subject: Bike feels 'weird' Reply with quote

Hi, today i was out riding and the bike just didnt feel right, i knew something was wrong because it didnt start as it normally does, it was very hesitant.

But i thought nothing of it and went out anyway, only find that when accelerating it feels, again, quite hesitant. Idling it feels as though it wants to cut out but doesnt quite, the power seems to have dropped too. Low speed is jerky and stuttery.

My first thought was that maybe i need to go onto reserve but no, i pulled over and tried reserve but still the same. Filled up with petrol on the way back to find that it took a few seconds more to start as opposed to instantly, like it usually does, and then just saved itself from cutting out when i put it in gear.

Any ideas of things to check? Ant Thumbs Up

(Worth noting: The bike (Superdream) has recently had its carbs balanced and a top end rebuild last month.)
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Timmeh
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PostPosted: 19:12 - 27 Jun 2009    Post subject: Reply with quote

my money would be on a shagged sparkplug, so have a look before you go silly and tear the engine apart.

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Ant132
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PostPosted: 19:20 - 27 Jun 2009    Post subject: Reply with quote

Thanks. Dont worry i wont be tearing into it just yet, im hopefull its something minor but im not sure what. The plugs are quite new (a month or two old) but gotta be worth a try Smile
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Timmeh
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PostPosted: 19:25 - 27 Jun 2009    Post subject: Reply with quote

Just because they are new, it doesn't mean that they're correctly gapped. Incorrect gapping can result in weak spark (too long) rapid electrode wear (too short) or problems like you are describing.

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GSXR400 x2 | '94 RVF400 | '93 TZR125 4DL (again)
20:22:30 BLUEX5: i would love to be forced to undergo a**l plugging with different sizes
20:48:18 Temeluchus: comp you hunk of smouldering homos3x you
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Ant132
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Joined: 18 Nov 2007
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PostPosted: 19:27 - 27 Jun 2009    Post subject: Reply with quote

Timmeh wrote:
Just because they are new, it doesn't mean that they're correctly gapped. Incorrect gapping can result in weak spark (too long) rapid electrode wear (too short) or problems like you are describing.

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Thanks mate. Will get some in the morning then Thumbs Up Smile
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smegballs
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PostPosted: 19:35 - 27 Jun 2009    Post subject: Reply with quote

Timmeh wrote:
Just because they are new, it doesn't mean that they're correctly gapped. Incorrect gapping can result in weak spark (too long) rapid electrode wear (too short) or problems like you are describing.

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Too True!!

On my GS400 it wouldnt run/start.

Took plugs out and the gaps were quite small with a shitty weak spark. Now logic to me would be that smaller gap means easier to jump hence better spark.


No Chance!!!

Once they were properly gapped made quite a bit bigger, the bike
had big fat blue sparks and started almost at once! Thumbs Up


Seems weird but plug gap really does make a BIG difference.

Rich
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Howling TerrorOutOfOffice
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PostPosted: 22:59 - 27 Jun 2009    Post subject: Reply with quote

Also worth checking for airbox leaks, and clean secure air filter (my bike was running abit ropey, i hadn't seated the filter properly Embarassed )

Pat
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