Spark Plug Carbon - Zenith Aircraft Builders and Flyers2024-03-29T02:37:22Zhttps://zenith.aero/forum/topics/spark-plug-carbon?commentId=2606393%3AComment%3A876840&feed=yes&xn_auth=noScott,
I am pushing 700 hour…tag:zenith.aero,2022-08-31:2606393:Comment:8772822022-08-31T13:10:57.528ZRalph Powellhttps://zenith.aero/profile/RalphPowell
<p>Scott,</p>
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<p>I am pushing 700 hours on my 350 and plugs are still clean and compression is still 79/80 all the way around.</p>
<p><br></br>Are your CHTs consistent across all four? EGTs? Have you checked and adjusted your valves? Google has a lot of pictures of fouled plugs an suggested causes. No matter the cause you are very likely going to need to contact one of the two service centers sooner or later. Sooner is better. Ray Lawerence is very helpful and his number is 478…</p>
<p>Scott,</p>
<p></p>
<p>I am pushing 700 hours on my 350 and plugs are still clean and compression is still 79/80 all the way around.</p>
<p><br/>Are your CHTs consistent across all four? EGTs? Have you checked and adjusted your valves? Google has a lot of pictures of fouled plugs an suggested causes. No matter the cause you are very likely going to need to contact one of the two service centers sooner or later. Sooner is better. Ray Lawerence is very helpful and his number is 478 232-9560.</p>
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<p>Ralph</p>
<p>N750RP</p>
<p></p> Not sure what is causing that…tag:zenith.aero,2022-08-30:2606393:Comment:8768402022-08-30T12:56:56.870ZArnie Minearhttps://zenith.aero/profile/ArnieMinear
<p>Not sure what is causing that, one cylinder looks like running too rich, or oil control ring bad.</p>
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<p>Not sure what is causing that, one cylinder looks like running too rich, or oil control ring bad.</p>
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<p></p> Just did a check yesterday wh…tag:zenith.aero,2022-08-29:2606393:Comment:8770062022-08-29T13:37:24.527ZScott Millerhttps://zenith.aero/profile/ScottMiller
<p>Just did a check yesterday when I pulled the plugs: #1-78, 2-78, 3-77, 4-77. This has been consistent for my engine.</p>
<p>Just did a check yesterday when I pulled the plugs: #1-78, 2-78, 3-77, 4-77. This has been consistent for my engine.</p> how is you compression on thi…tag:zenith.aero,2022-08-29:2606393:Comment:8769982022-08-29T12:52:08.981ZArnie Minearhttps://zenith.aero/profile/ArnieMinear
<p>how is you compression on this one, compared to the others</p>
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<p>how is you compression on this one, compared to the others</p>
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