919 issues still emerging - Wrist Twisters
 
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post #1 of 7 Old 03-06-2009, 05:14 PM Thread Starter
 
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919 issues still emerging

The bike unfortunately is still hesitating i've riden it the past few days and i've felt it around the 40-50 mph mark and noticably doing it at 3500 rpms <-- todays ride) does anyone have an idea what this could be? I've heard possibly a fouled spark plug from one of the members on here that's what i'm going to check once i get some time off from work and school. I don't know what could cause the hesitation and the PCIII is now disconnected and hooked up to the stock computer. i have no idea what it could be. thxs!

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post #2 of 7 Old 03-07-2009, 04:08 AM
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This is exactly what mine did when the plugs fouled. It was most noticable to me under light to moderate acceleration. Usually when following a slower car down an on-ramp to the highway.

Hang with it. These bikes are quite resilient. You'll come out on the other side. There is a thread around here somewhere about the Fuel Pressure Regulator having some issues and causing 1 or 2 of the 4 plugs to foul.

My fouling problem was a result of a mistake by the previous owner or his repair shop. They accidentally left a hose clamp on the fuel return line that goes from the fuel rail to the tank.

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post #3 of 7 Old 03-07-2009, 04:19 AM
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the fuel regulator was fouling plug 2 and 3 (middle ones)

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post #4 of 7 Old 03-07-2009, 10:10 AM
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If it is indeed a bad FPR give tom at Turbocity a call (turbocity.com) and order one of his re-worked FPR's, it smooths out the abuprt throttle response a bit.

Dan


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post #5 of 7 Old 03-07-2009, 06:26 PM Thread Starter
 
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Awesome thanks for the info guys, is this something i can do my self or should i take it to a shop? Thanks for all the responses

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post #6 of 7 Old 03-08-2009, 08:57 AM
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i havent done it myself (mine not bad) but some have done it themselfs. go to most dealers and they will only install oem.

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post #7 of 7 Old 03-20-2009, 08:55 AM
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I may be wrong here, and I'm sure someone will quickly point it out if I am, but...

I've seemed to read many, many posts about the flappers and the hesitation & stumble they can cause. The pros say that by disconnecting the flapper (you know, that infamous "flapper mod" we keep reading about) you will take care of the mid-range flat spot and stumble. I did mine and it took care of a noticable problem. Had nothing to do with my maps, plugs, or anything else.

Just a thought, fellers!

Okay, ready to read all the "you're full of sh*t hairball" posts... GO!

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