Dirtybirdg79 Posted July 19, 2016 Share Posted July 19, 2016 (edited) Hey guys, I'm going to attempt to attach a picture of my spark plug from my miniplane top 80. It's just been broken in with about 10 hours and I checked the plug to see if I can be sure it's running at optimum temp range and not lean, but to be honest, I have no clue what it should look like. I looked online, but there's so many contrasting pictures of plugs that I just can't tell. I am ordering a digital cht sensor, but thought I'd check here too. Thanks in advance for any help. Thanks Goldy Edited July 19, 2016 by Dirtybirdg79 Quote Link to comment Share on other sites More sharing options...
Neilzy Posted July 19, 2016 Share Posted July 19, 2016 This might help 1 Quote Link to comment Share on other sites More sharing options...
ptwizz Posted July 19, 2016 Share Posted July 19, 2016 For a 2 stroke with 10 hours on it, that looks pretty reasonable. The absence of black deposits on the insulator (white bit in the middle) indicates that the plug is a 'hot' enough grade to avoid fouling. The electrode (bent over bit) appears to have a slight brownish deposit, like the middle row of Nielzy's chart, indicating correct mixture. Most of the charts available are for 4 stroke engines. A 2 stroke plug will always show some degree of soot from the oil which is burnt with the fuel. So long as the soot is not staying on the electrodes or the insulator, it's OK. Quote Link to comment Share on other sites More sharing options...
Dirtybirdg79 Posted July 19, 2016 Author Share Posted July 19, 2016 Thank you both for that information! Really helps. Just wanted to be sure. Its been running great so far. Just wanna keep it that way. Thanks for the prompt reply. Goldy Quote Link to comment Share on other sites More sharing options...
cas_whitmore Posted July 19, 2016 Share Posted July 19, 2016 I have top 80 also . That's the colour I am comfortable with . cas . Quote Link to comment Share on other sites More sharing options...
Dirtybirdg79 Posted July 20, 2016 Author Share Posted July 20, 2016 Very good to know cas. Thank you Goldy Quote Link to comment Share on other sites More sharing options...
morgy Posted July 27, 2016 Share Posted July 27, 2016 The plug colour look good to me.... BUT if your low hours on the machine I would be running it richer for a longer break in period than 10 hours.. Quote Link to comment Share on other sites More sharing options...
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