Starting Issue - AGAIN

[darrsi]

I had a old z1000 a few years back that suffered these intermittent problems, and the fix given to me by a old zed head was brilliantly simple. As the fellers have said the low tension side of things doesn't take a lot to drastically alter the high tension side. If your getting say 11 volts at the coils instead of 12, multiplying many many times over and being converted to high tension that one volt loss becomes a helluva lot more. If you check the voltage to the coils ( low tension) you may well find there's a drop, caused by old wiring and old joints leaking off voltage which is what my problem was. Fix was to run a live feed to the coils direct from the battery via a relay, useing the original coil live feed as the switch wire. Sounds simple because it is, but it worked, plugs ran a lot cleaner too. Just another thing to look into mate :-) also, that bike ran dreadfully on iridium plugs, as have a few I've owned, no idea why, some bikes just don't like the buggers..:-)

Thanks for the tip.
The bike runs spot on once started,and i couldn't be happier with it.
I've changed a lot of parts recently just to rule them out, which weren't expensive, and bearing in mind the bikes age i thought it wouldn't hurt anyway.
For now it does seem like the problem has been found, but i'll put some more booze in the tank next time i fill it up to make sure it clears any leftover moisture out.
And anyway, everyone deserves a drink at Xmas, even my bike.  :b


I never really needed to change my plugs, as because they were Iridium there is probably years left on them as i don't do high mileage, but i did notice i had CR9EIX plugs in before but replaced them with CR8EIX ones, but i doubt very much that it makes any difference at all to the running of the bike, as they both cover our climate quite comfortably. I kept them so can always change them back if i want, but i really don't feel the need to.