Reply To: Flooded my bike help – GT250R
100% change the oil yes as you will have oil that’s fuel damaged , so if it keeps circulating , you may kill some small critical parts as it runs and find the oil will vanish quickly too (burning away rapid)
Carbs =
Disconnect the fuel tank and get a bucket, if fuel is dripping out of the tap away from the bike, then replace that fuel tap , as it will flood your bike or jam your floats in the carb overnight. And you may find the engine hydrolocked.
Confirm float height is OK inside the carb , take a look below and look for my reply inside that topic which confirms the float height of the carb
Clean the spark plugs , but they may be fouled anyway (lost their potency to spark properly next time) so grab some fresh CR8E plugs. (Have 4 of them, so the other next 2 will be your backup, saves you running back & forth to shops)
Once the bike has its own drained, replace the oil filter = 1000% don’t skip this part & leave the spark plugs out, let the engine evaporate away but make sure the area where the bike is safe to do so as fuel vapors will be in the air incase a friend or relative in your garage decides to light a cigar next to the bike! 💥🚬
Cranking too much time would mean the carbs send fuel to the pistons but the engine needs to spark the fuel, so it can make sure as to why the engine got flooded, happens in cars too.
Test your coils and stator , use the topic below (Ignore that it says GT125R , it shares the same coils as its GT250R sister)
Rectifier – How to Test Stator , Battery , Regulator – GT125R Carby
Keep us posted & good luck . Hope my replies made sense