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Not starting !!!
Posted: Thu Apr 16, 2015 8:43 pm
Author: z1000puddin
Guys
I need a bit of help here
I have just finished fitting a new gearbox to my 1075 zed
I have spark at the new plugs
I have compression @ 150 across all pots
Fully charged battery
Dyna ignition & dyna coils
29mm smoothbores
I have only had a loud backfire and then nothing????
Any pointers to where I need to start checking 👿😩
Stu
Posted: Thu Apr 16, 2015 8:58 pm
Author: steve bowdler
Fuel Supply good ?
Posted: Thu Apr 16, 2015 8:59 pm
Author: z1bman
was it running ok before you removed the engine? did you just part the cases & not touch the top end? check your coils & ht leads or wired correctly
Posted: Thu Apr 16, 2015 9:24 pm
Author: z1000puddin
z1bman wrote:was it running ok before you removed the engine? did you just part the cases & not touch the top end? check your coils & ht leads or wired correctly
It was running well before I stripped it
The barrels were left on. The head was removed & All the valves were left in place & I checked the clearances were all 4 thou on reassembly
The HT leads are all numbered and were hung to the front
I tried swapping the black and green coil wires but no difference
There is fuel in the bores but there doesn't seem to be a great deal as the plugs are not wet.
I tried a naked flame into the plug hole and it did cause a flame out
Confused or what
I may have to go back to the start and double check
Stu
Posted: Thu Apr 16, 2015 9:37 pm
Author: z1bman
backfiring it normally associated with ignition or valve timing but your compression is good so i would doubt it would be down to that but it would wise to double check it
Posted: Fri Apr 17, 2015 7:33 am
Author: garyd
Check your spark is firing at the right time.
I had this years ago when I fitted a Z1100 ignition plate to a GPz1100 by accident.
Posted: Fri Apr 17, 2015 7:50 am
Author: Ginger Bear
Does sound like your ignition timing may be 180 degrees out. But as you say, you've already tried swapping the ignition wires around.
not starting
Posted: Fri Apr 17, 2015 8:17 am
Author: 1962royp
try swapping the coil power leads over from one coil to the other if its 180 out it will either backfire or run.
Posted: Fri Apr 17, 2015 8:33 pm
Author: z1000puddin
Thanks guys for all the relevant pointers.
I got the old girl back to life the night.
My problem was the black Bob Weight spacer on the dyna ignition.
The advance weights were not correctly located in the 2 grooves😳😳😳
Started first prod of the button.
I am still not 100% happy as it seems to run better with the choke fully on ??
It is still popping & farting with the choke off.
I got fed up with it tonight & I will have a further look tomorrow
Stu