[ninjamik]

any thoughts...replaced starter clutch recently and suddenly bike decides to run really rough splatter backfire fuel was good!
' coincidence? unsure so checked forums..so many ways to go. decided to take out plugs,,,cleaned them though they looked ok ( 1 yr old ) ..checked coils..all within parameters. ( bike has 70000k )..and started good as new? maybe I was lucky.
enjoyed the experience of air box removal. etc .thanks to youtube guides.. any one else have issues

 

[ninjamik]

help

bike ran great for 3 days now again runs really rough backfires sounds terrible splutters.....guessing book dealer with computer systems check: could be many things to check... any ideas as hoping its not wiring loom or electrical

 

[spray____]

Have you checked for codes?

 

[ninjamik]

got 63 code only exhaust servo which had for ages....so no...dropped bike last year but ran smooth for 4 mths after 3 mths repairing it ( broke shoulder so didnt rush ) ..must say plugs looked really black so will install new ones tomorrow and ordered fuel pump as a second option.. called dealer and they advised plugs...then fuel pump and they quoted $800 bucks supply and fit for a fuel pump....crazy price

 

[spray____]

got 63 code only exhaust servo which had for ages....so no...dropped bike last year but ran smooth for 4 mths after 3 mths repairing it ( broke shoulder so didnt rush ) ..must say plugs looked really black so will install new ones tomorrow and ordered fuel pump as a second option.. called dealer and they advised plugs...then fuel pump and they quoted $800 bucks supply and fit for a fuel pump....crazy price

Video would be really helpful. Black plugs indicate running rich. Is the air filter clean? What makes you think it's the fuel pump? Wouldn't run out to buy or replace without a pressure test first.

 

[mpp12]

when the pump, is starting to fail....

in hi speed, the engine just goes very very lean and the bike looses power..

some times I have had pumps measure nice in the pressure test, then after 30min running the bike, they just start to fail. (typical gixxer 07+ problem)

I would start
spark plugs
air filter
clean the injectors.

clean the pump and see if there is something wrong... you can clean the pump filter a bit with carb cleaner...

see if there is any air line (map) or any cable loose.

 

[ninjamik]

thanks guys for info.....got new plugs in yesterday and runs good as new..happy again although its a big job def old plugs were black .. ordered new airfilter old one looks really dirty yet 1 year old maybe service last year didnt get new plugs and airfilter...but paid for full service $750...who knows but glad running good....saw a thread re fuel pumps are common to breakdown on ZX10 mines got 70000k but seems good..so cross fingers no glitches now for a while ...at least i saved a ton of money!