No spark issue

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No spark issue

Post  Banditnewb on Mon 09 Jan 2017, 9:33 pm

Hi everyone, got my first bike on the weekend it was a steal i couldnt say no. Only problem is it has been sitting for about 5-6 years. So ive just done what i would do to a car. Flush coolant, drain oil check plugs etc etc. Ive turned it over to try fire it up it cranks but no go. Im pretty sure i have no spark as ive pulled a plug and tried to see if it arcs while i crank it but nothing. Ive checked the coils with a multimeter (im not very experienced when it comes to electric side of things) they read about 1.8-2v with ign on is this right? Any other ideas? Bike is a 93 gsf250 if you havemt seen my intro post. Thanks for any help.

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Re: No spark issue

Post  gus on Tue 10 Jan 2017, 7:16 am

Check pick up pulsar coil under lower rhs lower cover . There will be either one or two of them (opposite each other )
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Try checking spark at night time with lights out and with a plug you know works .
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Re: No spark issue

Post  Banditnewb on Tue 10 Jan 2017, 6:44 pm

Is that the cover on the side of the engine inline with the crank?
I pulled the carbs and sprayed wd40 around the ignition checked the spark with one of the plugs i have out of the head to check and it was sparking quite well put it all back together kicked it over and it started for 1-2sec then died and wouldnt start again. Now i pulled the plug again and no spark yet again... Im running out of ideas im thinkings its a bad ground somewhere but i cant find anything suspect.

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Re: No spark issue

Post  Banditnewb on Tue 10 Jan 2017, 7:47 pm

Ok update ive fixed the spark issue. It was me trying to start it off an old car battery i had charged up it would spark well when fresh but as the voltage dropped i dont think it was enough to send spark through.
But the problem i have now is i cant get it to start. I hook up the tank and the exhaust starts puffing small amount of black smoke but it does nothing. One thing it does do though a few secs after you stop cranking it pops and shoots a flame out the exhaust. Is it pushing too much fuel i to the cylinder?
Jusy want to get this thing running now haha driving me crazy.

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Re: No spark issue

Post  gus on Tue 10 Jan 2017, 8:34 pm

A Battery alone may not be enough . Jumper leads to a running car is the go .
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Re: No spark issue

Post  Banditnewb on Tue 10 Jan 2017, 10:13 pm

Yeah that was what i had done sparks is all good now. Tomorrow ill be pulling the carbs and giving them a pull down clean and im going to add an inline fuel filter. Fingers crossed shes up and running tomorrow arvo

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Re: No spark issue

Post  Banditnewb on Wed 11 Jan 2017, 9:31 pm

Spent this arvo pulling the carbs and cleaning they were filthy 2 were worse than the others, flushed the tank again make sure all the crap was out of it and put fresh 98 fuel in along with an inline filter. Turned it over yet again and nothing got it to splutter abit a few times but it wouldnt start.
Whats psi are the cylinders spose to push on a comp test? Thats the next thing ill be doing i think..

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Re: No spark issue

Post  kundalini on Wed 11 Jan 2017, 10:05 pm

Hi there ,my advice would be to buy new spark plugs and a can or 2 of carb cleaner and also  check carbs float  height , good luck ya might need it:thumb:
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Re: No spark issue

Post  Banditnewb on Thu 12 Jan 2017, 6:10 am

I done float height when i cleaned the carbs. Got new plugs but i havent put them in yet the old ones are still sparking fine. Have also tried spraying carb cleaner into the carbs directly started to splutter but wouldnt run.

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Re: No spark issue

Post  Banditnewb on Thu 12 Jan 2017, 9:34 pm

Today i put brand new plugs in and went to start it. With the choke on it sounded close to starting but wouldnt and now it has started backfiring out of the 2nd carb. Im running out of ideas, timing? Appreciate the help.

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Re: No spark issue

Post  Re-Cycled on Thu 12 Jan 2017, 9:55 pm

@Banditnewb wrote:Today i put brand new plugs in and went to start it. With the choke on it sounded close to starting but wouldnt and now it has started backfiring out of the 2nd carb. Im running out of ideas, timing? Appreciate the help.

When you were checking spark, you couldn't have mixed up the plug leads?

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Re: No spark issue

Post  reddog on Thu 12 Jan 2017, 10:08 pm

If it's backfiring you have a timing issue or the plugs in the wrong firing order. Check the manual to verify the correct order and go from there.
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Re: No spark issue

Post  Banditnewb on Fri 13 Jan 2017, 8:31 am

I think you could be right about the plugs now i think about it i think 1 and 2 are the wrobg way around ill confirm after work this arvo. Workibg tired on your bike is a bad idea haha.
Just a quick question is it on to start the bike straight off the carbs without the airbox? It should be ok shouldnt it?

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Re: No spark issue

Post  gus on Fri 13 Jan 2017, 11:55 am

no air box is fine . Check needle and seats . If it hasn't been started for that long I would be surprised they have survived . One cylinder could be flooding .
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Re: No spark issue

Post  2wheelsagain on Fri 13 Jan 2017, 1:58 pm

Didn't we have a dude with a 250 on here who gave up trying to get it started about 12 months ago?

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Re: No spark issue

Post  Banditnewb on Fri 13 Jan 2017, 4:23 pm

Well its running now. Lead one and two were aroubd the wrong way must have switched them when i changed the plugs apart from that only thing i changed was the plugs amazing how fussy the bike is about plugs. Thanks for all the suggestions i appreciate it

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Re: No spark issue

Post  Chook on Fri 13 Jan 2017, 4:56 pm

@Banditnewb wrote:Well its running now. Lead one and two were aroubd the wrong way must have switched them when i changed the plugs apart from that only thing i changed was the plugs amazing how fussy the bike is about plugs. Thanks for all the suggestions i appreciate it

ah, the simple fixes are often the hardest to find...............

glad you got it going and can now start to enjoy it!!
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Re: No spark issue

Post  Banditnewb on Fri 13 Jan 2017, 5:00 pm

Yeah prob needs a good tune up as it seems rich and a few small bits then i can get my license haha.

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Re: No spark issue

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