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Re: Spark plug 1-3 color difference - Aeroprakt Panama
by Roger Lee » 10 years ago
Hi Rich,
So these plugs are 250 hrs. old? The gap if too wide will make these run too cold and have poor performance causing this blackened plug. Old plugs are the same. if you have one of the old plugs check the gap. As a plug wears from running the engine the gap will increase over time.
We get NKG plugs here from any where from $2.00 - $3.25 each. All the people I know toss then between 75-100 hrs.
p.s
I can tell from looking at your plug pictures again that the gap is way too wide.
You may not have anything wrong with your plugs other than old age.
Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell
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Re: Spark plug 1-3 color difference - Aeroprakt Panama
by Ricardo Koyner » 10 years ago
Curious thing is that mine´s are 75 hr but one side -#2 & #4 left carb - are very clean vs right side carb #1 one is black and #3 is white.
Ricardo
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Re: Spark plug 1-3 color difference - Aeroprakt Panama
by Rich Provenzano » 10 years ago
Roger,
The original plugs were changed at approx 100 hrs.
The new plugs have approx 75 hours on them. TT on engine is approx 175 hrs.
I need to check the hobbs in the Tru Trac unit when I go to the airport.
Rich
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Re: Spark plug 1-3 color difference - Aeroprakt Panama
by Roger Lee » 10 years ago
Hi Rich,
Sorry I missed the 75 hr. part.
Where did the 250 hr. maint. come from?
Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell
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Re: Spark plug 1-3 color difference - Aeroprakt Panama
by Rich Provenzano » 10 years ago
Roger,
The 250 hours came from the original post from Ricardo Koyner.
Rich
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