fazer 600 2001 misfire

[bucksfiz]

misfire on no 4  and slight one on no 3 tryed several plugs tryed coils tryed caps  still no good anyone got any ideas cheers boys

[red98]

if you have a nice big fat spark at the plugs i would start looking at the carbs  ....what colour are the plugs ?

[bucksfiz]

no 4 plug is still like new no change of colour when i pull the lead off with it running nothing happens and no 3 only a very slight drop in rpm  1& 2 leads off seperatly and the rpm drops right down to engine nearly cutting out so 3 not working fully and 4 pot nothing at all plug still stays like new  done a compession check and all 120

[69oldskool]

Drain carbs, maybe you've water in the float bowls?,i've had this on bikes before.
Worth a try.

[red98]

have you checked for a spark ?

[WookieoToole]

swap coils over that will tell u if coil pack is naff

[bucksfiz]

swapped coils and put a new one on  and yes we have a good spark????????????????????    anyone got a rope doing my head in now  did undo drain plug on no 4 carb but only let a bit out just to see if there was petrol in there  thks for all the replies so far but still not sorted

[bucksfiz]

drained carbs still no good

[Fazerider]

If you've a spark and compression that only leaves fuel as the problem. Either the level or possibly a blocked jet.
Are you using choke? Does the cylinder chime in at higher revs or when warm? (Might help pinpoint a cause to the choke or pilot).

[bucksfiz]

its like it hot or cold    ive taken the carbs off stripped em down cleaned the jets found no think    still doing me head in

[Fazerider]

Are you sure the spark leads are connected in the right order? Just wondering if 3 and 4 are swapped.

[red98]

good thinking FAZERIDER ,has this come on all of a sudden,have you done any other work on the bike recently ?

[ade the blade]

good thinking FAZERIDER ,has this come on all of a sudden,have you done any other work on the bike recently ?

wot?..like fitted a new horn or tank cover? sowwy !! :rolleyes :lol :lol :lol :lol

[bucksfiz]

no resent work carried out just developed misfire  bike only gets used occationly cant spell that one    and only has 9000 mls from new

[bucksfiz]

Are you sure the spark leads are connected in the right order? Just wondering if 3 and 4 are swapped.

     


yes according to the numbers on the leads  4 on the far outside right hand side as u sit on it

[red98]

[quote author=Fazerider link=topic=7969.msg78356#msg78356 date=1369584148]
Are you sure the spark leads are connected in the right order? Just wondering if 3 and 4 are swapped.

     


yes according to the numbers on the leads  4 on the far outside right hand side as u sit on it
[/quote]






are all the other leads in the right position ?    iam sure you have already checked but got to ask 

[bucksfiz]

[quote author=bucksfiz link=topic=7969.msg78365#msg78365 date=1369587078]
[quote author=Fazerider link=topic=7969.msg78356#msg78356 date=1369584148]
Are you sure the spark leads are connected in the right order? Just wondering if 3 and 4 are swapped.

     


yes according to the numbers on the leads  4 on the far outside right hand side as u sit on it
[/quote]


yes all the same as theyve been since new



are all the other leads in the right position ?    iam sure you have already checked but got to ask 
[/quote]

[bucksfiz]

update:  put carbs back on and still misfiring on 4  and slightly on 3    so i connected a 3 foot piece of petrol pipe to the balance pipe on the rubber carb mounts on no 4 and with engine running poured petrol down 3 foot tube and ha presto she reeved up    so what now??????????????  carbs all cleaned  bubbers not leaking or sucking in air        gotta buy some rope or a box of matches  its about to go in the thames

[red98]

oh no not the thames  :eek .......got to be blockage in the carb,did you remove the jets to clean ? also check the float height 

[Dead Eye]

This could be completely retarded but; could the butterfly be sticking closed?