dr 650 running very rough

[kyle]

apologies that its not gs related but have any of you any(sensible)advice

my 95 dr650 intermitently runs very rough wich causes a real teeth rattling vibe.
if it was a twin you would swear it was off a cylinder.

what i am thinking is that its an ignition problem.
you likely know these are bikes are twin spark and the ht leads are part of the coils.
should i invest in new coils.is this likely to be the problem.
do coils gradually break down or do they just die all at once.
these bikes do have a balancer shaft but this is gear driven and if this was causing the bother i would imagine it would be constant and not intermittent.

any advice you can give would be great

cheers,kyle

 

[Timolgra]

Best to start with the cheap process of illimination.
New plugs and clean the carb, check the inlet rubber, automatic decompreesion lever, valve clearances, compression, check for loose electrical connections.

Even your rear wheel cush drive will mislead you if it's on the way out

later...coils, CDI unit if it's faulty try worldwide Ebay, they're not too badly priced in the states.

 

[kyle]

Best to start with the cheap process of illimination.
New plugs and clean the carb, check the inlet rubber, automatic decompreesion lever, valve clearances, compression, check for loose electrical connections.

Even your rear wheel cush drive will mislead you if it's on the way out

later...coils, CDI unit if it's faulty try worldwide Ebay, they're not too badly priced in the states.

thanks timolgra,
plugs carb inlet rubber all ok.
what to look for on decompression lever?
electricals all ok also cush drive.
the vibe is definatley related to engine speed as opposed to drive as it diminshes if you engage clutch while on the move.
burying my head in the sand re cdi

 

[Timolgra]

Try putting your question here
http://www.advrider.com/forums/showthread.php?t=135295

It is a specific thread for DR650s, they'll know

 

[shinobi]

try not letting crazy people crash it for starters