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Misfiring (Read 88 times)

marekbuk Full Member Offline SuzukiSavage.com Rocks! Posts: 158 West Yorkshire, UK Gender:	Misfiring 09/04/15 at 08:36:32 Hi all My 2005 S40 has started misfiring intermittently on acceleration - at all revs and speeds. Sometimes it runs fine for a couple of minutes and then will miss-fire and stutter! I've got an in-line fuel filter fitted so doubt the carb is clogged and suspect something electrical but where to look? anyone had similar symptoms? cheers Mark(UK)
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: Misfiring Reply #1 - 09/04/15 at 08:42:04 I'd replace the plug and check the plug wire. in the end of the plug is a screw fitting make sure it's tight.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Misfiring Reply #2 - 09/04/15 at 10:01:09 And make sure that there is no sand waiting to fall in when the plug come out. Now is a good time to mod the right side head cover trim, so the tank can stay on.
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thumperclone Serious Thumper Alliance Member Offline PGR rider riding with respect Posts: 6072 Grand Junction Colorado Gender:	Re: Misfiring Reply #3 - 09/04/15 at 11:04:30 an under voltage battery can cause sputtering also
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thumperclone Serious Thumper Alliance Member Offline PGR rider riding with respect Posts: 6072 Grand Junction Colorado Gender:	Re: Misfiring Reply #4 - 09/04/15 at 11:04:48 an under voltage battery can cause sputtering also
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marekbuk Full Member Offline SuzukiSavage.com Rocks! Posts: 158 West Yorkshire, UK Gender:	Re: Misfiring Reply #5 - 09/04/15 at 13:41:23 Thanks guys - will check battery voltage first, then replace plug/check lead and do the cover mod as its a pig to remove my tank and seat as I've done the Bluecollar bobbers conversion - will let you know how I get on tomorrow
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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Misfiring Reply #6 - 09/04/15 at 17:53:04 Many folks have reported problems with using an inline fuel filter. Could be the culprit. Try running without the filter and see if that cures the problem.
Back to top	There's no problem that a full tank of gas and a sunny day can't fix! 2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor IP Logged

marekbuk

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SuzukiSavage.com
Rocks!

Posts: 158
West Yorkshire, UK
Gender: male

Re: Misfiring
Reply #7 - 09/05/15 at 11:04:24

OK so this morning I removed the Spark plug and it was sooty as hell - so down to the auto store and replaced it and did the LH head cover mod at the same time (used an angle grinder to cut a slot in the cover and replaced the bolt with a stud!)
Whilst removing my bobber seat I could see the probable cause for running so rich in that my not-so-neat rewiring and positioning of the starter solenoid meant that there was a fair bit of obstruction over the stock air intake. I'd have thought that air would have found its way around the wiring but perhaps not?
I did check the filter element and it was clean but gave it a blast of air anyway.
Anyway she runs like a dream now - I also pulled out the brass blanking plug in the carb body whilst I was at it.

Happy riding and thanks for the advice guys.

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