78 sp 370 runs bad when warmed up - Motorcycle-Journal Forums

docholiday0425 · 08-08-2008, 09:37 PM

my sp 370 runs great for 15 minutes then starts back firing, popping, missing
then eventually shuts down. what can it be?

OneBadPolaris · 08-10-2008, 04:24 PM

The only thing that I can think of is that your ignition coil is getting hot and causing you spark plug to misfire and like you said eventually to shut down. especially on a older bike like yours its probably going to be your coil or something electrical.

docholiday0425 · 08-10-2008, 07:25 PM

i was leaning towards the valve being too tight. that would have the same affect. if i am correct.

6thelement · 08-15-2008, 01:02 AM

any luck? i have the same bike with the same prob

docholiday0425 · 08-15-2008, 06:29 PM

no luck yet still trying, someone i know said to try the coil or stator the coil is 60.00 the stator is around 150.00 to 200.00. good luck

6thelement · 08-15-2008, 09:50 PM

i am leaning toward the coil to had a chevy that would act up like that to (warm + run bad)a coil fixed it ,im looking a 5 days shipped , can't find one local

docholiday0425 · 08-15-2008, 11:18 PM

did you order one, if you did how much did it cost.

08-08-2008, 09:37 PM	#1 (permalink)
docholiday0425 Newbie Joined: Jul 2005 Posts: 18	78 sp 370 runs bad when warmed up my sp 370 runs great for 15 minutes then starts back firing, popping, missing then eventually shuts down. what can it be?

08-15-2008, 09:50 PM	#6 (permalink)
6thelement Newbie Joined: Aug 2008 Posts: 2	coil i am leaning toward the coil to had a chevy that would act up like that to (warm + run bad)a coil fixed it ,im looking a 5 days shipped , can't find one local

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08-10-2008, 04:24 PM	#2 (permalink)
OneBadPolaris Newbie Joined: Aug 2008 Posts: 3	The only thing that I can think of is that your ignition coil is getting hot and causing you spark plug to misfire and like you said eventually to shut down. especially on a older bike like yours its probably going to be your coil or something electrical.

08-10-2008, 07:25 PM	#3 (permalink)
docholiday0425 Newbie Joined: Jul 2005 Posts: 18	i was leaning towards the valve being too tight. that would have the same affect. if i am correct.

08-15-2008, 01:02 AM	#4 (permalink)
6thelement Newbie Joined: Aug 2008 Posts: 2	any luck? i have the same bike with the same prob

08-15-2008, 06:29 PM	#5 (permalink)
docholiday0425 Newbie Joined: Jul 2005 Posts: 18	no luck yet still trying, someone i know said to try the coil or stator the coil is 60.00 the stator is around 150.00 to 200.00. good luck

08-15-2008, 11:18 PM	#7 (permalink)
docholiday0425 Newbie Joined: Jul 2005 Posts: 18	did you order one, if you did how much did it cost.

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