DT400 wont start- ignition problem??

[dr30]

Hi there,

New to the forums and already have a question!

Me and some mates are building up a 1976 dt400 that was sitting in another mates yard for many years. The motor had put the rod through the crankcase, so we purchased a replacement motor. The replacement motor is out of a 1975 MX400.

We wired up the new motor with basic wiring (no lights, etc)- but cant seem to get it started. We used the CDI and the coil of the original DT400 motor.

However, we seem to be having a bit of an electrical problem.

When we try to kick it over there is no spark. But when we disconnect the earth on the CDI and kick it over for a bit, and then connect the earth again we get a spark (as soon as its re-earthed).

Do we have a faulty pulser coil, CDI unit, or coil? Or even something else?

If any electrically minded people could shed some light on our situation it would greatly appreciated!

Cheers
Matt

[Sorelegs11]

MX Motor is stuffed and you need to swap it for the good dt400 engine that I have as a spare.

Cheers Darren 

Sorry couldn't help myself,

Welcome to the forum, not everyone on here is a goose like me.

[dr30]

Haha- thanks Darren!

Where were you a few weeks ago when we were still looking for a motor? PM me a price- we might be interested in it for our next project!


We just discovered the motor is actually out of a DT400C (incorrect engine number info of the web)! Does anybody know if we can run a DT400c stator with a DT400d generator? We think this is were our problem lies....