DTR 125 Running Problems

mckenzie · L Plate Warrior Joined: 27 Sep 2010 Karma :

Hi,

I'm new to the site so welcome Smile

I have a dtr 125 (dt 125 lcr on log book) anyhow been sorting a few things out on it powervalve new plug oil general service really. But it's now running weird in neutral it revs fine also pull's well in low gears but when it gets to about 6-7k ish rpm it's as if it's limited and just stops reving I can tell it wants to but it wont. After I altered the powervalve it was fine much better than before as it was pinned open and now is standard. Ive changed the plug checked the carb out for any blockages same with the air filter looking for ideas on what to try next has anyone had similar problems?

Any help would be greatly appreciated

Thanks

N cee thirty · Banned Joined: 31 Jan 2010 Karma :

just a guess,but maybe it has a restricted cdi ?
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

mckenzie · L Plate Warrior Joined: 27 Sep 2010 Karma :

Well it was ok before. I do think the CDI is restricted though.

N cee thirty · Banned Joined: 31 Jan 2010 Karma :

hmm maybe a coked up exhaust if its just started it
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

mckenzie · L Plate Warrior Joined: 27 Sep 2010 Karma :

Already had that apart as I thought it was restricted the and de coked it.

radical · Spanner Monkey Joined: 02 Jul 2010 Karma :

Have you altered the cable adjustments form the control motor in any way? your problem may not be down to the powervalve but could be fuelling or ignition related, I would check both these areas out first. Alright D

mckenzie · L Plate Warrior Joined: 27 Sep 2010 Karma :

radical · Spanner Monkey Joined: 02 Jul 2010 Karma :

Make sure that the powervalve is set up as per original specs and adjust the cables to original specs. has the exhaust, carb, ignition been altered in any way, have any mods been carried out to the cylinder head or ports, this will make problem solving a lot easier.

mckenzie · L Plate Warrior Joined: 27 Sep 2010 Karma :

All other parts have been left I received new coil and ht lead today will see how that goes.