DT 175 poor starting and fouled plug

[Bolton]

Hi All. Could use a bit of advice with my 2002 DT 175. It had a partial seizure recently and I had it re-bored and installed new piston and rings/ gaskets etc. I think seizure happened because my wife (yes, it always helps to have someone else to blame) took it out on a 40 degree (104degree F) day and rode it as fast as it would go on the highway for about an hour.

It started first time from the repair and I have done maybe 300kms (200miles) on her since. Last week she simply refused to kick start. I had started her normally that morning. She started second or third kick. I then rode her with no problems for about 30 kms and stopped at a friends place for a few hours. Came out and it would not kick start. Checked plug. Seemed to be running rich. Plug wet and black, but she did did spark. I eventually push started her with help from friend. Thick grey smoke came out of exhaust pipe for first few seconds then that stopped and bike ran fine and normally and I rode her home. Yesterday she again would not kick start.

I am beyond my level of knowledge here. Anyone got any clues?

Cheers All.

Bolton

[bb3924]

what does the plug look like? does the "fuel" residue on the plug seem excessively oily?

does engine sound different - knocking, for instance, when you first start it and exhaust is smokey?

has there been depreciation in engine power noticed - when it does run?

and, when you ride it now, does it quit/fail during ride or you arrive and shut it off?

does it prefer full throttle or idle when cold or hot - anything you notice there?

[dt502001]

Nice questions bb3924 (...............can the you guys set it up in the title of workshop /use that as a pre question before someone asks a first question.... Mod's?)

[Cynic]

Duplication causes confusion. This is already running elsewhere. Asking in different bits of the forum just puts people off.