04/12/2026
Suzuki Rmz250 4 stroke complete engine rebuild. This all started with a broke valve then once it was running again it ran too hot shut it down went through it again to make sure everything I had done with the top end was spot on. It was. So I drained the coolant and oil again. Loads more metal in the oil. Pulled the engine back out crankshaft and bearings bad, oil pump bad, previous person replaced crank shaft and damaged engine case.
Needless to say now we have another engine case a new full set of all the bearings and seals and a new to this bike working oil pump. All I can say is wow! So much damage due to someone trying to make a quick buck. I spend weeks building an engine the previous person turned it around in a couple weeks.
Still waiting on new timing chain and guides to go into it. Here’s some pics!