z900 running bad

[stone MOVIE]

i all i have a kawasaki z900 1976 i have a problem my bike when i start it its running ok revs good for a few seconds then its like its runs on 2 cylinders When i touch the 4 exhaust header pips no1 and no4 are hot but no2 and no3 are worm not hot I have tryed all i can think of with no luck and was hoping someone can suggest what to try im open to all suggestions When i ride to work you can feal it cutting in and out like it wants to run on all 4 cylinders sometimes it does and back to running on 2 Things i have tryed new spark plugs cleaned the tank and striped the carbys tryed another set of coils and checked the plugs its got a dyna electronic ignition that i put on well before this problem started im in need of help please or can anyone suggest a good mechanic that can fix it im in the campbelltown area of sydney

[s man]

Gosling is the man to talk to..PM him..

[z900/zx9]

When u changed the coils did you also change the plug Caps,the resistence in them could be a problem.

[stone MOVIE]

yes the coils are off my 2nd z900 thanks 4 your reply

[z900/zx9]

If you have covered all the spark and fuel issues ,then electrical is next and if you have a standard fuse holder i would start there.Or maybe something really simple like your battery is not getting charge,so start her up turn on the lioghts and see if they get brighter with increased revs.I have had one of these for 30 years and i have always managed to work it out eventually

[Gav]

Change your petcock gaskets...

[z900/zx9]

I know its a pain in the ass but you may have to put the points and condensers back on just to eliminate the dyna ignition,yep process of elimination

[stone MOVIE]

yep ill check it out thanks z900/zx9......its not the petcock / tap mate but thanks all the same

[MickLC]

Check all the connections to your coils too, I chased a problem with my z650 for ages that ended up being a dodgy crimp connector that looked OK on the outside but was actually only holding on by a single strand of wire.

[Gosling1]

answered on your other thread about the same problem....

a good idea is to only post up 1 thread - then you don't have to go chasing across multiple threads asking the same question getting different answers on each thread .

[oldman]

When you lose cylinders for whatever reason the first thing you should check is the compression. Otherwise you end up spending time and money on a non-fix when it's actually the valves or other compression related shit. Cheers.
I know it's tempting but don't check the compression with your tiny little pee pee. It will only cause pain.

[MrFaulty]

You say you cleaned the fuel tank but what about the fuel filter - if its anything like the 03 ZX6 you will have to pull the fuel pump apart. I've just cleaned mine for the second time in 5 weeks, the first time it was filthy, this time it didnt look dirty but hit it with a toothbrush and rinsed it and now runs sweet (might change where I buy my fuel!)

[Gosling1]

..... if its anything like the 03 ZX6 you will have to pull the fuel pump apart.......

its a 1976 z900 mate - its nothing at all like a 2003 ZX6 - no fuel pump and the only fuel filter is fitted inside the tank above the fuel tap.

[z900/zx9]

..... if its anything like the 03 ZX6 you will have to pull the fuel pump apart.......

its a 1976 z900 mate - its nothing at all like a 2003 ZX6 - no fuel pump and the only fuel filter is fitted inside the tank above the fuel tap.

Yep i think mr Faulty had a brain fade,although i do run an inline filter in my 76 z900

[stone MOVIE]

yep new filters to and clean the tank one to and new fuel