z1 coils and petcock cleaning

Here I am again. lol 1975 Z1 900 Got down to coil not firing on 2 and 3 as part of starting problem. Need coils guys where can I get a set without shelling out $120.00 anyone got some they would sell? Also need to find out how to clean out the petcock as I have to clean this tank and get it sealed... Nothing coming out of it...
:sick: Thanks for any help guys Chuck

What's up with all these bad coils. This is like the 20th plea for coils this week it seems like. I have yet to replace a coil in my life so far.

RonKZ650 wrote:

What's up with all these bad coils. This is like the 20th plea for coils this week it seems like. I have yet to replace a coil in my life so far.

its the original paint Ron,it helps the coils relax!

Post edited by: PLUMMEN, at: 2007/06/21 20:34

Well when you have fire at the points and fire going into the coil and no fire coming out to the plugs... Seems to me a bad coil... May be wrong but 1 and 4 have fire and 2 and 3 don't so if there is fire everywhere but coming out of coil to the plugs seems like a coil issue. The bike has set for 24 years may have something to do with it.

1petree wrote:

Well when you have fire at the points and fire going into the coil and no fire coming out to the plugs... Seems to me a bad coil... May be wrong but 1 and 4 have fire and 2 and 3 don't so if there is fire everywhere but coming out of coil to the plugs seems like a coil issue. The bike has set for 24 years may have something to do with it.

OR maybe something else besides a bad coil, such as possible:

bad spark plugs;
faulty plug wires;
bad plug wire to plug cap connection;
faulty plug cap;
dirty or damaged points;
point gap maladjusted;
bad capacitor (condenser);
wire from coil to points broken or shorted;


Good Hunting!

Patton wrote:

1petree wrote:

Well when you have fire at the points and fire going into the coil and no fire coming out to the plugs... Seems to me a bad coil... May be wrong but 1 and 4 have fire and 2 and 3 don't so if there is fire everywhere but coming out of coil to the plugs seems like a coil issue. The bike has set for 24 years may have something to do with it.

OR maybe something else besides a bad coil, such as possible:

bad spark plugs;
faulty plug wires;
bad plug wire to plug cap connection;
faulty plug cap;
dirty or damaged points;
point gap maladjusted;
bad capacitor (condenser);
wire from coil to points broken or shorted;


Good Hunting!

new plugs
good gap
points have fire from them
good gap
points have fire from them so condensor should be good

wires a possibility... will check thanks Patton

try to switch the coils from side to side and see if the problem moves with the coil. Then you will know that it is the coil.