bike has just died help me

matphillipsuk · Borekit Bruiser Joined: 02 Nov 2004 Karma :

hi my nsr has just died it sounded like the chooke was on when i was riding and then it just started slowing down but still going. then when i pulled over turned it off it started up ok ran for a about half a mile then did it again backfired now it wont start again! any ideas ? please dont say it has anything to do with the cylinder and piston

alains · World Chat Champion Joined: 08 Jul 2004 Karma :

put a new plug and try . if it works you must clean tank , air box foam , carb and adjust mixture . plugs do not like too rich or too oily mixture
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the worst day fishing is better than the best day working

matphillipsuk · Borekit Bruiser Joined: 02 Nov 2004 Karma :

nope nothing trying to turn over but not sparking into life. any ideas? if it does need a new piston and cylinder kit, other than gaskets seals is there anything else i will need to replace

simon1221 · World Chat Champion Joined: 28 Jul 2004 Karma :

How easy is it to turn the engine over? eg bumpstart?

As it is too easy then no compression.
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DNA50 (sorry) ->> TZR125l >> GPZ500S

bish777 · World Chat Champion Joined: 11 Nov 2004 Karma :

not wishing to sound condescending, but you havent run out of fuel have you?
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GSXR1100J

kingsknight · World Chat Champion Joined: 21 Jun 2003 Karma :

sounds like you ran out of fuel my friend Smile

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TS50 (sold) NS125F (sold) NSR125R-K (write off after 2 crashes) CG125 (nicked) XR125L-3 (Sold )-: ) DR125SM '11 (sold yay) XL125V '12 (In love with this bike) XT600E '04 (fun on the dirt)

matphillipsuk · Borekit Bruiser Joined: 02 Nov 2004 Karma :

nope im not that dumb lol yeah pleanty of fuel in there tried to start it agian today and it started but when i took it along my street it wouldnt let me rev above about 6000rpm with out sounding like it had done the other day. any ideas?

alains · World Chat Champion Joined: 08 Jul 2004 Karma :

look your servo-motor pulley sequence , you may have a bug either on cdi or r/c valves unit . key on : valves on high . start engine : valves on low when idle . valves on high starting about 6000 rpm
if the pulley do not move after starting , this a sign of no infos comming from the cdi through the red/white wire .
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the worst day fishing is better than the best day working

matphillipsuk · Borekit Bruiser Joined: 02 Nov 2004 Karma :

ok so tried starting again today wont start without being bump started. i took the spark plug out placed my thumb over the hole and pressed the starter it blew my thumb off the hole that suppose to be a good sign of compression isnt it? so would that rule out a problem with the piston?