Trumpet 216 Posted March 18, 2017 Share Posted March 18, 2017 (edited) You usually see plugs like that in a much bigger engine .. Typically a Lycoming flat four or a six cylinder Continental. They give a more even flame front over a much bigger piston, and there's two per cylinder. Edited March 18, 2017 by Trumpet Link to post
kharli 100 Posted March 19, 2017 Share Posted March 19, 2017 I hope that's all that's wrong, should be easy to check ..go for a good blast, at least 30 miles say then look again. Check no mouse nests in the air filter ! Could be the spark plug had a poor spark for whatever reason and making it look like the mixtures to rich ,does look oily though. Could even be a coil fault to that plug. Link to post
kharli 100 Posted March 19, 2017 Share Posted March 19, 2017 https://www.bing.com/images/search?view=detailV2&ccid=eY7G69z5&id=9D59E88A7E9F04D3E79FCB153C53BAFBBC449841&q=Spark+Plug+Color+Chart&simid=608035180001103597&selectedIndex=2&ajaxhist=0 Link to post
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