ninjette.org - View Single Post - Cylinder 2 Misfiring / Not firing / Unpredictable

juliusmichaelhonrada · July 14th, 2016, 06:03 AM

some update guys :
ok i put coolant to the radiator , Prestone premixed green color , did run the bike for 15 mins , idling on cylinder #2 is full of sputtering and misfire , its not actually stabilizing even with 2500 rpm. What really happening out here is that only cyl #1 is carrying cyl #2 so the engine doesnt stall, and the moment i try to reduce the rpm to 1500, the engine will stall.

Here is the weird part , when i rev it cylinder #2 fires perfectly , i know because my hands is in the exhaust manifold the pulse is consistent and hot .. while when im not revving it ,the pulse is weak + cold with sometimes strong+hot pulses which is a moment of successful combustion .

Yep so here i go , this weekend i'll try to redline it /torture test if it doesnt die , i guess its good enough for commuting to school.

July 14th, 2016, 06:03 AM	#26
juliusmichaelhonrada ninjette.org guru Name: Julius Michael Location: Philippines Join Date: May 2016 Motorcycle(s): GPX250-RII Posts: 296	some update guys : ok i put coolant to the radiator , Prestone premixed green color , did run the bike for 15 mins , idling on cylinder #2 is full of sputtering and misfire , its not actually stabilizing even with 2500 rpm. What really happening out here is that only cyl #1 is carrying cyl #2 so the engine doesnt stall, and the moment i try to reduce the rpm to 1500, the engine will stall. Here is the weird part , when i rev it cylinder #2 fires perfectly , i know because my hands is in the exhaust manifold the pulse is consistent and hot .. while when im not revving it ,the pulse is weak + cold with sometimes strong+hot pulses which is a moment of successful combustion . Yep so here i go , this weekend i'll try to redline it /torture test if it doesnt die , i guess its good enough for commuting to school.