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The problem of spark plug combustion

by 王汉成 in 912 / 914 Technical Questions 7 months ago

912/914发动机工作正常，但火花塞很黑，请问出现这种情况的原因，如何处理？

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Re: The problem of spark plug combustion

by 王汉成 » 7 months ago

王汉成

5 5 11

912发动机工作正常，但火花塞很黑，请问出现这种情况的原因，如何处理

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Re: The problem of spark plug combustion

by 王汉成 » 7 months ago

王汉成

5 5 11

912 engine works normally, but the spark plug is very black, may I ask the reason for this situation, how to deal with it

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Re: The problem of spark plug combustion

by Roger Lee » 7 months ago

Roger Lee

125 5.12k 4.53k

We need a lot more information. Could be idling too much? Do not sit at low rpms for any length of time. How old are the plugs? Is this a 912uls or a 912iS? What do the plugs look like if you run the engine around 4000 rpm for about 5 minutes. Shut it down and no idling before you check the plugs.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Thank you said by: David HEAL

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