I’m finishing up a refresh of a 1988 RM250. The bike did not have a spark which I managed to isolate to the CDI. I bought an aftermarket CDI which seems to work well but the bike seems to run out of pull at a lower RPM than expected. It comes on the pipe nicely and pulls hard but tails off quicker than I expected. It is known as a mid range motor but I’m not convinced it is running as it should.
I’m going to check the power valve but as it was fully rebuilt I think it is likely working fine.
The CDI I bought covers several RM model years while the OEM CDI is specific to 1988. I’m going to talk to the CDI vendor to see what they think but I would like to try and find an OEM CDI. If anyone has one or knows where one is available please let me know. I’ve been checking ebay but so far no luck. There may be some NOS available but the price is very high.
Any suggestions would be appreciated.
Mike