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my dt 12r wont go into powerband it gts up to 6k or 5and half k and boggs and splutters with no powerband
the jets have been cleared and are correct
the reeds checked and are correct
the only thing i see left is the powervalve
do you have any expierience with this or advice i can take to fixing this problem -
@timstafford99 What makes you think it's the powervalve?
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Process of elimination is only as good as how well you know what you’re eliminating...
Take the cover off of the power valve and check that it’s cycling correctly. I can only speak for my bikes year (1988~97) but it should be in the open position when ignition is off, then cycle closed, then open when the ignition is switched on...
I don’t know about newer bikes...I’ve had bikes where the CDI has started to pack up loose their definition in revs as they break down. Does it rev above 5-6k when stationary? Is it just being ridden under load?...
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@rking7888
I didn’t think to ask if it was an early pre servo bike!
I can’t imagine how a pin breaks though. Mine never had a pin, the nut locked it to the valve in position, I think?... -
@spookdog
I have no idea how it would have got broke, my only idea was a previous owner thought they new what they was doing trying to adjust it lol All the pre servo powervalve covers seem to have the pin I had a nightmare finding one NOS as the part numbers changed multiple times but turned out they all superseded each other and were the same. Will post a pic of the broken one the weekend hope this all helped tho as it was driving me insane, I was convinced it was carb problems or that my air box was blocked or something as it randomly started after a very muddy day in the woods .
