IN NEED OF HELP-regarding a rmx 250 - Motorcycle-Journal Forums

TS185 enthusiast · 07-20-2007, 04:49 AM

hello, im in dire need of some help.
the last time i took out my 1998 rmx 250, i noticed it was having some problems, including backfiring and also stalling in low revs.

a week or so later, my father and myself removed the headlight and the excess wiring, and then wired it all back up how the manual instructed. we even pulled and cleaned the carby apart to make sure that the back firing wasnt the carby.

we went to kick it over,and it wouldnt start. it would backfire almost after every kick,

we have checked everything over numerous times, we know its not something mechanical, we have checked the compression. we know its electrical, we sent the CDI box over to a company that specialises in bike electrics, and they said it was ok. we have fitted a condenser. and still the bike wont run. it has a healthy spark but it just wont start, we are puzzled. we still suspect its the CDI box

just wondering is anyone else has had this problem-we would try a CDI box but to buy a new one would cost $1000 AU. so we dont want to spend that amount without knowing it is the box that is causing the problem.

any help would be apreciated-

thanks

bigE · 07-20-2007, 10:32 AM

Check the timing. My timing bolt came loose once and gave me similar symptoms.... Can you push start it? Tried putting some carb cleaner (or something similar) in the cylinder to prime it?

TS185 enthusiast · 07-20-2007, 10:49 PM

yeah thanks, we wernt able to roll start it. we are thinking of checking the pick up coil.we are sure its electrical. and we had the mechanic check the spark, and it sparks but as soon as the revs pick up the spark goes...would this be the CDI?

thanks

mikestp · 07-21-2007, 09:07 AM

have u tried watering down the petral? sometimes the bike cant handle it full strength

the_privateer · 07-24-2007, 07:45 AM

Quote:

Originally Posted by mikestp

have u tried watering down the petral? sometimes the bike cant handle it full strength

thats the dumbest thing I've ever heard, ever

TS185 enthusiast · 07-26-2007, 07:01 AM

yeah thats the most stupid advice ive ever heard,

mikestp · 07-27-2007, 05:23 AM

mmmmm. maby thats why my bike doesn't work anymore...

07-20-2007, 04:49 AM	#1 (permalink)
TS185 enthusiast Newbie Joined: Jul 2006 Posts: 14	IN NEED OF HELP-regarding a rmx 250 hello, im in dire need of some help. the last time i took out my 1998 rmx 250, i noticed it was having some problems, including backfiring and also stalling in low revs. a week or so later, my father and myself removed the headlight and the excess wiring, and then wired it all back up how the manual instructed. we even pulled and cleaned the carby apart to make sure that the back firing wasnt the carby. we went to kick it over,and it wouldnt start. it would backfire almost after every kick, we have checked everything over numerous times, we know its not something mechanical, we have checked the compression. we know its electrical, we sent the CDI box over to a company that specialises in bike electrics, and they said it was ok. we have fitted a condenser. and still the bike wont run. it has a healthy spark but it just wont start, we are puzzled. we still suspect its the CDI box just wondering is anyone else has had this problem-we would try a CDI box but to buy a new one would cost $1000 AU. so we dont want to spend that amount without knowing it is the box that is causing the problem. any help would be apreciated- thanks

07-27-2007, 05:23 AM	#7 (permalink)
mikestp Newbie Joined: Jul 2007 Posts: 14	mmmmm. maby thats why my bike doesn't work anymore... Last edited by mikestp; 07-27-2007 at 05:32 AM.

07-20-2007, 10:32 AM	#2 (permalink)
bigE Kickstand Operator Joined: Apr 2005 Bike: 2000 SV650 & 2000 Marauder Location: DFW, Texas Posts: 297	Check the timing. My timing bolt came loose once and gave me similar symptoms.... Can you push start it? Tried putting some carb cleaner (or something similar) in the cylinder to prime it?

07-20-2007, 10:49 PM	#3 (permalink)
TS185 enthusiast Newbie Joined: Jul 2006 Posts: 14	yeah thanks, we wernt able to roll start it. we are thinking of checking the pick up coil.we are sure its electrical. and we had the mechanic check the spark, and it sparks but as soon as the revs pick up the spark goes...would this be the CDI? thanks

07-21-2007, 09:07 AM	#4 (permalink)
mikestp Newbie Joined: Jul 2007 Posts: 14	have u tried watering down the petral? sometimes the bike cant handle it full strength

07-26-2007, 07:01 AM	#6 (permalink)
TS185 enthusiast Newbie Joined: Jul 2006 Posts: 14	yeah thats the most stupid advice ive ever heard,

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)