OT - Over-revved Suzuki Bandit

Mate of mine managed to over rev ("only for a second or 2") his 650 bandit last night on the way home, and now has a "very eractic and not at all constant" mis-fire above 3000 RPM.

Also engine is very down on power.

I've suggested he starts with compression tests, but would anyone else like to have a guess at the problem, and offer suggestions to help diagnosis?

Many thanks.

David

Reply to
rads
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rads waffled thusly

Bent valve stems, holed piston crown. Personally i wouldn't run it anymore and I'd get the exhausts/carbs/plugs off and see if you can see anything using a decent torch. Head off would be next for a proper lookie-see.

Reply to
Paul - xxx

Wot he said. This would be the brand-new-for-2007 water-cooled Bandit 650, then? Ouch.

These Suzuki engines are renowned for being bullet and idiot proof. You "mate" is either very unlucky, or lying through his teeth with the 2 second remark.

Reply to
Rich B

Oops, 600 I think, not 650, definately 4 or 5 years old.

Andy IS mechanically unlucky, but I suspect the 2 seconds was after the "wonder why I've stopped accelerating, hmm should that needle be bent around the stop" thought process had been completed.

For example, last time he tried tuning his bike, he ended up dropping a plastic spacer from the colourtune he was using through the spark plug hole, and ended up having to take the cylinder head off to retrieve it.

Lovely lad, just wouldn't want him "helping" on you motor!

David

Reply to
rads

Definitely one of the bulletproof ones - the design is over 20 years old and they just DON'T break. Well ...

Even that shouldn't have destroyed it - these motors are in a fairly low state of tune and can be tuned for twice the horsepower and still stay in one piece. Mind, I suppose anything will break if it's held at WOT long enough. :-(

Remind me not to ask him next time I need anything doing.

Reply to
Rich B

piece of piss to pull a bike engine apart to inspect it isnt it?

You can even bring it into the house to do it! :)

Perhaps im just bitter after lugging heavy bits of 101 about and from having to climb in and out of the truck (and squeeze behind the front wheels!) to reach various bits and pieces.

(on the 101 there are 14 head bolts per side. getting round them all involves about 4 changes of position between kneeling on the seat and sitting on the floor behind the front wheel - and since you are tightening/loosing them in stages...)

Reply to
Tom Woods

You'll be suggesting we can clean up ally cylinder heads in the dishwasher next! Shhh. You don't know who is lurking on this forum.

Reply to
Rich B

His'n'hers dishwashers? One for each 101?

Lizzy

Reply to
Lizzy Taylor

I always thought they have a rev limiter to protect against that

Reply to
jOn

jOn waffled thusly

Nah, most dishwashers spin out freely ... or is that Bandits ???

;)

Reply to
Paul - xxx

I wouldnt want to do that - might get crumbs in my cylinder heads! ;)

guess who is going to sit in the living room and reassemble his cylinder heads very shortly ;)

Reply to
Tom Woods

On or around Fri, 06 Apr 2007 06:12:45 GMT, "jOn" enlightened us thusly:

what, the dishwasher?

Reply to
Austin Shackles

Think here seems the most appropriate place for reply, before we descended into dishwasheriness.

Completely out of character, Andy DID get lucky this time. Turned out to be a "hand tight" (which I read as falling out) spark plug. New set of plugs, properly tight and he's back on the road towards his next disaster.

Thanks all.

David

Reply to
rads

Heh, too bloody easy for some people ... I'd discounted a loose plug as something that would have been tried as a matter of course ... ;)

Glad he got it sorted and it was a quick, easy fix. It sounded so much like disaster ...

Reply to
Paul-xxx mobile

:-)

Reply to
Rich B

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