Author Topic: IGNITION COIL FITTING  (Read 660 times)

Offline Gromitdog

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IGNITION COIL FITTING
« on: June 17, 2020, 09:06:29 AM »
Good Morning all

Can anyone help me please I brought a Honda CB550K3 a while ago and it not running very smoothly when out on the road so i changed the plugs and done the timing and balanced the carbs (Well attempted too  ;D ) I am just wondering if I got the ignition leads back in the right order ?  I have had a look in the manuals and I can't find a write up or picture to tell me which coil outlet feeds which cylinder  I know L/H side coil feeds L/H side cylinders & R/H side coils feed R/H cylinders So which ignition leads go to which cylinder from the coils, Any guidance on this I would be most grateful

Also for further reference which NGK plugs are best for mid range use

Many thanks

Gromitdog  ;D
KEEPING IT SHINY SIDE UP IS ALWAYS A GOOD RESULT ON A RIDE OUT

Offline JezzaPeach

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Re: IGNITION COIL FITTING
« Reply #1 on: June 17, 2020, 09:13:14 AM »
Hi I’m sure others will confirm this but if it’s the same as a K1, one coil is 1&4 and the other is 2&3.
1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

Offline K2-K6

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Re: IGNITION COIL FITTING
« Reply #2 on: June 17, 2020, 09:18:43 AM »
Morning gromitdog  :)

Yes as above,  one coil feeds both 1 and 4 cylinders,  and the other 2 and 3 doesn't matter which is which from a single coil as it fires both leads in parallel.  Just that the HT leads of 2+3 wouldn't normally reach the outermost two plugs.

To see which is which coil,  just trace the trigger wire from points marked 1+4 to the coil and fit to those cylinders.  Wires are usually yellow and blue.

Plugs are normally starting with ngk 8 heat range.

Offline peterengland

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Re: IGNITION COIL FITTING
« Reply #3 on: June 19, 2020, 12:35:59 PM »
I use 7's in winter and 8's in summer usually as they are slightly cooler?? to be honest it doesn't seem to make much difference.
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Offline JezzaPeach

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Re: IGNITION COIL FITTING
« Reply #4 on: June 23, 2020, 08:32:04 AM »
Pic attached
1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

 

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