installing new accel coils
- Patton
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Re: installing new accel coils
16 Oct 2010 19:43 - 16 Oct 2010 19:48
I concur with MFolks.
What do the plugs look like right now? If sooty, the carbs may already be just fine.
Typically, a weak coil (or reduced voltage to the coils) may result in sooty plugs, even where the carbs are perfect.
In that event, replacing the coils, or getting correct voltage to coils, may resolve the sooty plug issue, without disturbing the carbs.
Imo, should do a plug reading (high speed throttle chop is best) after installing the new coils. And if plug reading is satisfactory, don't disturb the existing carb jetting.
Good Fortune!
What do the plugs look like right now? If sooty, the carbs may already be just fine.
Typically, a weak coil (or reduced voltage to the coils) may result in sooty plugs, even where the carbs are perfect.
In that event, replacing the coils, or getting correct voltage to coils, may resolve the sooty plug issue, without disturbing the carbs.
Imo, should do a plug reading (high speed throttle chop is best) after installing the new coils. And if plug reading is satisfactory, don't disturb the existing carb jetting.
Good Fortune!

1973 Z1
KZ900 LTD
KZ900 LTD
Last edit: 16 Oct 2010 19:48 by Patton.
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- wdizard
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- 650ed
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Re: installing new accel coils
16 Oct 2010 20:12 - 16 Oct 2010 20:13
dr_bowtie wrote:
Sounds similar to what I use. A small mirror helps too. Works very well.
you can change the jets yourself....
...I use a 3in Phillips screw gun bit on a tiny ratchet that accepts screw gun bits that i found at advance auto parts... The screw on the bowls come out easy as long as the bit is fresh and fits the screws snug.
Sounds similar to what I use. A small mirror helps too. Works very well.
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Last edit: 16 Oct 2010 20:13 by 650ed.
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- keith1
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Re: installing new accel coils
17 Oct 2010 18:15
any change you might see installing accell coils can be rectified by a mixture screw......if you have to re-jet, you have other problems totally seperate from the coil install......
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