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jeff(at)rmmm.net
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 Posted: Sat Aug 01, 2009 6:41 pm Post subject: Plug Color |
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Hi All,
Can anyone shed some light on why the front two plugs are black yet the
back plugs are light brown as they should be? There was another guy
flying a Sting with a 912 and he's has the same thing happening. Any
advice would be appreciated.
Regards,
Jeff R.
A258 - N128LJ / Gold Rush
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craigb(at)onthenet.com.au
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| Posted: Sat Aug 01, 2009 9:06 pm Post subject: Plug Color |
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If your CHT's are much the same,The front two cylinders could be running a touch richer due to imbalance in air flow because of less than
ideal design. If the front CHT's are a lot lower, you may be getting incomplete combustion due to underheating, simmilar to when the engine
is cold. Better a bit rich than too lean IMHO.
craig
| Quote: |
Hi All,
Can anyone shed some light on why the front two plugs are black yet the back plugs are light brown as they should be?<?param Helvetica>Jeff R.
A258 - N128LJ / Gold Rush <?/fontfamily>
<?pre><?b><?font size=2 color="#000000" face="courier new,courier"> |
<?/b><?/font><?/pre><?/body><?/html> [quote][b]
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jeff(at)rmmm.net
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| Posted: Sun Aug 02, 2009 7:36 am Post subject: Plug Color |
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Craig,
All my cylinders are running within about 10 to 15 degrees of each
other as I now have a shroud over the engine with a 2.5" hose cooling
all the fins evenly.
On Aug 2, 2009, at 12:06 AM, craig bastin wrote:
| Quote: | If your CHT's are much the same,The front two cylinders could be
running a touch richer due to imbalance in air flow because of less
than
ideal design. If the front CHT's are a lot lower, you may be getting
incomplete combustion due to underheating, simmilar to when the engine
is cold. Better a bit rich than too lean IMHO.
craig
>
> Hi All,
> Can anyone shed some light on why the front two plugs are black yet
> the back plugs are light brown as they should be?Jeff R.
> A258 - N128LJ / Gold Rush
|
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