+- Welcome to The Australian Hayabusa Club Forum - ARCHIVE ONLY VERSION - NEW REGISTRATIONS & POSTS DISABLED (https://www.australian-hayabusa-club.com/MyBB)
+-- Forum: Bike Discussions (https://www.australian-hayabusa-club.com/MyBB/forumdisplay.php?fid=35)
+--- Forum: Technical Discussion (https://www.australian-hayabusa-club.com/MyBB/forumdisplay.php?fid=5)
+--- Thread: bad miss (/showthread.php?tid=22961)
Pages:
1
2
bad miss - crumpy - 02-10-2015
My 99 has a bad miss all through rev range even mchanic is stumped ive fully cleaned fuel system new pump injectos etc spark seems fine according to mechanic 175 psi each Cylinder tappets good new battery code says coo got us stumped any ideas we have run out and 100 dollars an hr for mechanic to search with no idea
RE: bad miss - Batfink - 02-10-2015
if it helps here is a copy of my 99 manual
https://drive.google.com/file/d/0B67Bu6LstdIYVXpWeTBUejJtU0E/view?usp=sharing
RE: bad miss - crumpy - 02-10-2015
Thanks ive got a hard copy of factory manual even let mechanic use it
RE: bad miss - somebodyelse - 02-10-2015
something silly like kinked fuel lines?
RE: bad miss - captainrob - 02-10-2015
I was ready to torch my 99 after Tathra. Tried everything , cost me a fortune in fuel filters, plugs, etc etc - long miserable story ! - eventually turned out to be loose connector on power commander. Looked ok but wasn't seating properly.
RE: bad miss - crumpy - 03-10-2015
(02-10-2015, 09:28pm)captainrob Wrote: I was ready to torch my 99 after Tathra. Tried everything , cost me a fortune in fuel filters, plugs, etc etc - long miserable story ! - eventually turned out to be loose connector on power commander. Looked ok but wasn't seating properly.
Im about to do the same it happened at tathra a few weeks ago mine is standard as far as i know no pc
RE: bad miss - Aussie Steve - 03-10-2015
I would still check the ECU connector...and all the others...even if they look OK...pull em apart and reconnect.
RE: bad miss - crumpy - 03-10-2015
RE: bad miss - Camel - 03-10-2015
Have you changed your plugs? I often find Hayabusas tend to eat them. They'll spark outside the chamber but won't do so when under compression. Try changing the plugs and see what happens.
RE: bad miss - crumpy - 03-10-2015
RE: bad miss - Maj - 05-10-2015
You say injectors cleaned but have they been flow tested too
also try swapping coils and see if the miss moves to another cyl
and put another set of the cheaper cr9e plugs in, i have found the occasional bad plug , as i swap plugs every race meeting and sometimes during the meeting ,( they are a very disposable item when you run rich leaded fuel like i do )
have you isolated just which cyl it is ?
RE: bad miss - crumpy - 09-10-2015
Mechanic rang yesty said he thinks its a dead injector was in cyl 3 swapped to cyl 4 problem followed injector so replaceing it today 250 dollars for 1 oem injector so heres hoping
RE: bad miss - crumpy - 09-10-2015
Got the old girl back it was a dead injector on no3 going great now
RE: bad miss - crumpy - 09-01-2016
Happened again after 200 klms another mechanic said it could be crank sensor it happened to one of his bikes as they get hot so is there anyone who has spare one out there or where is the best place to get one or two if needed tia
RE: bad miss - Maj - 10-01-2016
Crank sensor fault will normally show a fault code,
i would go back to isolating the faulty cyl and swapping parts to see if its another injector or if its something else
i have a couple of std injectors if you need
you sure its not blocking the injectors with breaking down fuel lines or filter/strainer problems that come up more often now on the older 99-00 bikes ?