DT400 advice needed! Sounds like it is 4 stroking??

[dr30]

BTT

Still cant figure this out. We are thinking it may be the pulser coil or even CDI, as we have pretty much rebuilt the carb and also tried with another spare carby. We are thinking about moving to a points setup and have read about the 74-75 DT250 Points ignition system being a good swap. Has anyone had any experience do such a conversion?

Cheers
Matt

[80-85 husky]

how is the plug looking? have you tried a few plugs?

the fact that it runs ok as it runs out of fuel says the engine timing is ok, its getting way to much fuel for some reason.

broken reeds?

[dr30]

Thanks John- but we found the problem.

Got hold of a DT250 points ignition setup last night, fitted it and BOOM- away we went! So it must have been a faulty pulser coil/CDI unit. We managed to retain the original coil aswell.

Thanks for the advice everyone.