High rev electrical problem

Hi all again.. I've had this problem for a while now....2002 curvy

When the bike goes over 6 thou. rpm under heavy acceleration it starts cutting and spluttering, almost as if it's hitting the rev limiter..

I have already...
done a full service, plugs, fiters, oil.
Changed...
The coils
The CDI
The Hd leads and plug caps
The carbs
Cleaned every electrical connection I could find....

All this to no avail !!!!

Do any of you know someone in the West Mids who is a wizzard with these bikes???? I did try a mechanic and he said, yes it's electrical but he would have done all that I have!! I realy just don't know what else to do...Getting tired of throwing money at it though....

It has been a graduall problem, becomming harsher and more frequent as time went by....Now it's a permanent thing and I'm worried it's going to damage the engine.....

Help please

I had a similar problem and it turned out to be air supply to the motor. It started out not so bad but got worse as the paper filter got more dirty. Put a highflow filter in and fixed it right up!

But I see you've already done the filter...hope you get it figured out.

Got a decent earth connection for both the engine and wiring loom?

could it be the ignition pickup?? You have changed everything else

The air filter was dirty yes but it made no difference with a new one fitted..

I have checked the earth on the battery but not the loom and engine...as soon as the rain stops I'll have a look at them...

I did clean up and fit new conectors to the starter solenoid (the one under the right hand side pannel) if thats the one you mean?

Thankyou all so far

[Sid Squid]

I fixed one like this a while back that was caused by the sidestand switch, presumably it was vibration that caused the misfire, anyway switch out of circuit and all was well.

Originally Posted by Blue_SV650S

could it be the ignition pickup?? You have changed everything else

Worth a look - although generally they either work or don't, rather than causing a misfire.

I'll have a look at that!!!! if it is the side stand switch.....I'm going to be kicking myself .....All the same, I hope it is....

Originally Posted by Sid Squid

I fixed one like this a while back that was caused by the sidestand switch, presumably it was vibration that caused the misfire, anyway switch out of circuit and all was well.



Worth a look - although generally they either work or don't, rather than causing a misfire.

The little wire can get a bit 'dry joint'* where it connects to the pickup and gives these symptoms, like you say, if it is the pickup itself it'll be a bit more binary operational state!!

*This happened on another bike of mine, not the SV, but the concept should still be the same.

I do believe it's fixed

It was the earth cable to the engine....i cleaned it up and the problem has gone.....

I did try the side stand switch too...decided to leave it bypassed now, one less thing to go wrong in the future.....

Thank you all very much for the great advice

POGS69