MIsfire / Bogging down

DEar All i have a 2000 model SV650S , has been rely reliable and recently serviced ( well within the last 6 months ) has been extremly reliable untill last night.

I had been running out of fuel and began to notice the bikes rev counter dropping and then picking back up with the sensation that the bike was goling to run our of fuel. Anyway i pulled in to a fuel station fille dup and merrel went on my way, the issue has appeared to have gone.

This morning all way fine untill i hit the motorway and the issue started again and now has become much worse and feels almost like it only running on one cylinder. i have listed my thoughts as to the problem would like some feed back thought if anyone has any ideas.

• Bad plugs
• HT leads
• Carb has sucked somethign in fromt he bottom of the tank
• cracked inlet manifold
• lose Battery terminals

Currently there is no back fire so i think the mixture is still good so may not be the inlet manifold , feels more like ignition to me or fuel starvation.

Any thought would be greatly appreciated

My guess is a good carb clean, if the tank was drained its possible some crud came though but Im no expert, This sounds like a job for one of our "tech crew" one will be along shortly, you may need to post something in a bit to bring the thread to thier attention before it drops off the bottom of the screen.

Welcome to the Org BTW.

[ophic]

I'd agree with Owenski - the fact that it coincided with low fuel indicates crap in a carb, or possibly crap in the fuel filter. Of course this doesn't rule out other problems, but it's the first thing I'd check. Does anyone know of an effective carb cleaning fuel additive that might help? Just might be worth a try before taking things apart.

I'm not one of the "tech crew" but hey it's a free bump

[yorkie_chris]

When you say the tacho was dropping, was it dropping below your actual rpm? Like all the way back to zero when you were obviously still moving?

HI guys

thanks for the reply i might give the carb cleaner a go , go to try and get home first though as am currently 50 miles from home

The RPM counter was dropping to 0 while i was doing around 75 - 80 MPH

[yorkie_chris]

Well it's not a carb issue then, it's electrical.

Check your battery leads are tight, main fuse is not corroded etc.

I will see if i can go out an check it now , fingers crossed guys , thank you so much.

I hope i can get this sorted other wise it will be a recovery truck for the way home me thinks

I have now checked the battery and the + terminal look like the inside of an old kettle , will take it off and clean it up also will apply some WD40 to it , i hope this works

issue is till there , i think it must be a coil pack as it only seem to happen under load maybe i should replace them both ?

[yorkie_chris]

That can't give you the tacho problem