Calling on Ox 'n Bear Inc - Posted on 2006-12-13 06:57:44
TC 1300cc Superstar
Joined:
Monday, November 21, 2005
Posts: 833
Location:
Durban
South Africa
Hi guys, have a big problem. My bike is not firing on cylinder 1.
Setup:
- Coil A feeds cyl 2 + 3
- Coil B feeds cyl 1 + 4
Actions taken so far:
- Replaced all plugs
- Swapped plug caps between cyl 1 + cyl 2
- Checked continuity on lead to cyl 1
Next step:
- Swap coils
If there is anything I am overlooking, or if there is anything extra to check, please let me know. I'm pulling my hair out with this one, riding a bike on 3 cylinders is not great.
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 09:32:40
bear 1300cc Superstar
Joined:
Friday, October 29, 2004
Posts: 5790
Location:
cumbria
United Kingdom
coil breaking down under load? swap coils over if the problem shifts to the corresponding pot its the coil.
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 09:31:59
Colin 1000cc Pro Racer
Joined:
Friday, October 29, 2004
Posts: 269
Location:
Essex
United Kingdom
Hi TC if you are getting a spark from lead one,The next step might be to do a compression check on cylinder one.At least that will eliminate problems with the pistons ect.
Hope this helps.
Regards Colin.
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 12:43:45
TC 1300cc Superstar
Joined:
Monday, November 21, 2005
Posts: 833
Location:
Durban
South Africa
Like I said, next step is swapping the coils, will be doing that tonight. Strange thing is, the bike doesn't seem too phased by the missing cylinder. You can hear the engine is rough, it won't idle, and its more difficult to pull away, but once moving, it goes like there is almost nothing wrong with it (although can still hear the engine is not running properly).
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 13:38:32
The_Reverend 1300cc Superstar
Joined:
Wednesday, February 16, 2005
Posts: 1078
Location:
Coventry: Why?
United Kingdom
Unlikely to be the coil, if they go phut! you lose two cylinders.
Try putting your finger on the end of the spark plug to cylinder 1 and turning the engine over.
Oh I forgot to say, get a mate to video you doing this and post it on you-tube, I could do with a laugh!
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 13:43:00
Colin 1000cc Pro Racer
Joined:
Friday, October 29, 2004
Posts: 269
Location:
Essex
United Kingdom
pmsl at Reverend,Well if it's not the coil it must surley be the lead.
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 13:43:01
gixxer 1300cc Superstar
Joined:
Tuesday, May 31, 2005
Posts: 1563
Location:
sheffield
United Kingdom
if its not ignition it might be carbs, try cleaning the no1 pilot jet. when was the last time the clearences were checked? if the valves arent closing it wont run due to no compresssion.
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 14:22:22
TC 1300cc Superstar
Joined:
Monday, November 21, 2005
Posts: 833
Location:
Durban
South Africa
Lead seems to be ok.
Not sure if its a compression problem, but it seems to me that even if it has no compression, if the plug is firing, it should be burning fuel, and therefore making the exhaust header warm. But the header is ice cold while the others are warming up.
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 16:26:54
bear 1300cc Superstar
Joined:
Friday, October 29, 2004
Posts: 5790
Location:
cumbria
United Kingdom
you didnt say the plug was sparking!
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 18:30:11
the_ox 1300cc Superstar
Joined:
Saturday, October 30, 2004
Posts: 8803
Location:
London
United Kingdom
If it is sparking then its probably fuel to that cylinder problems or compression. Check as gixxer said and for air leaks in the manifolds.
Calling on Ox 'n Bear Inc - Posted on 2006-12-14 00:05:33
gixxer 1300cc Superstar
Joined:
Tuesday, May 31, 2005
Posts: 1563
Location:
sheffield
United Kingdom
it wont warm up if theres no fuel coming through the slow running (pilot) jet if its blocked! does it run on 4 above tickover? if it does,. its yer bloody bloody pilot jet. check it, THEN post again. lol! does it backfire occasionally when yer starting it?
Calling on Ox 'n Bear Inc - Posted on 2006-12-14 09:07:54
TC 1300cc Superstar
Joined:
Monday, November 21, 2005
Posts: 833
Location:
Durban
South Africa
changed the coils over, same thing. doesn't backfire, doesn't run on 4 ever. i suspect its a compression issue. will be changing the leads, just in case, but also trying to get a compression tester. i'm leaning towards a stuck valve. but if its compression, will have to wait another week before i can strip the head to find the problem
Calling on Ox 'n Bear Inc - Posted on 2006-12-14 09:12:00
TC 1300cc Superstar
Joined:
Monday, November 21, 2005
Posts: 833
Location:
Durban
South Africa
@rev
wont catch me out on that one again.
modified a CB400 twin, put an 1100RC tank on it, the petrol tap was right next to the plug, went to check if the tap was on, and grabbed the plug cap instead....
i'm sure you can imagine the polite words thereafter....
Calling on Ox 'n Bear Inc - Posted on 2006-12-14 15:57:32
gixxer 1300cc Superstar
Joined:
Tuesday, May 31, 2005
Posts: 1563
Location:
sheffield
United Kingdom
dont strip it till youve done the compression test and checked the valve clearances. what bike is it by the way?
Calling on Ox 'n Bear Inc - Posted on 2006-12-14 23:17:22
flyin2wheeler 1100cc Pro Racer
Joined:
Wednesday, December 01, 2004
Posts: 345
Location:
Norn Iron
United Kingdom
Quick test to try,bung a squirt of oil down through the offending cylinder and see (through plug hole)if it runs.The oil should momenteraly seal the piston and allow bike to run for a few seconds.If this test checks out,then u got a compression problem in cyl 1.
Calling on Ox 'n Bear Inc - Posted on 2006-12-15 06:53:46
TC 1300cc Superstar
Joined:
Monday, November 21, 2005
Posts: 833
Location:
Durban
South Africa
Bike is a kawasaki FX400R (naked gpz).
Will be have a look at it on sunday when I get back from weekend away. Struggling to find a compression tester to fit my bike (plugs are deep in the engine). going to throw some 'valve ease' into the tank to see if that will help. will prob check the carbs as well, but that will be next weekend.
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 06:57:44
1 
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 13:38:32
Calling on Ox 'n Bear Inc - Posted on 2006-12-13 13:43:01
