Bashan Raven 250 POWERS ON WONT TURN OVER HELP!

Thumper · 03-08-2024, 10:04 AM

Rob, Not sure what won't kick over means. I assume that you mean that the starter turns over the engine, but it is not firing up.

I agree that fuel may not be flowing or you may not be getting a spark (as mentioned above). but...

Could be low compression if the valves aren't closing. Previous owner may have never checked them. It would turn over easily with the starter. So check valve clearance. A simple rocker arm wiggle test at TDC on compression stroke will confirm this (should be a slight gap detectable). If they are tight at TDC, they absolutely need adjustment. Excessive wiggle, too loose and opening late.

03-08-2024, 10:04 AM	#4
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,294	Rob, Not sure what won't kick over means. I assume that you mean that the starter turns over the engine, but it is not firing up. I agree that fuel may not be flowing or you may not be getting a spark (as mentioned above). but... Could be low compression if the valves aren't closing. Previous owner may have never checked them. It would turn over easily with the starter. So check valve clearance. A simple rocker arm wiggle test at TDC on compression stroke will confirm this (should be a slight gap detectable). If they are tight at TDC, they absolutely need adjustment. Excessive wiggle, too loose and opening late. __________________ -2022 5 speed Templar X Orange, OEM 51T rear sprocket, 14T front sprocket -NOS 2020 KTM 250SX (2-stroke motocross), less than 10 hours on it Last edited by Thumper; 03-08-2024 at 10:42 AM.
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