carusoam Posted May 12, 2016 Report Share Posted May 12, 2016 Salon, read up on spark plug resistance and champion spark plugs. See if something there comes to light... That is a more common type of failure. Best regards, -a- Quote Link to comment Share on other sites More sharing options...
INA201 Posted May 12, 2016 Report Share Posted May 12, 2016 Had a similar issue that the awesome folks on this forum helped solve. Read through this thread and solution and you may discover the culprit. Looking forward to seeing your diagnosis. Quote Link to comment Share on other sites More sharing options...
sailon Posted May 12, 2016 Author Report Share Posted May 12, 2016 1 hour ago, Shadrach said: I don't think you do either; I was asking Anthony (Carusoam) about his incident. WHEW. Thanks. I agree, My bird jumps off of the runway with a smooth running engine when it is hitting on all plugs. 1 Quote Link to comment Share on other sites More sharing options...
sailon Posted May 12, 2016 Author Report Share Posted May 12, 2016 1 hour ago, carusoam said: Salon, read up on spark plug resistance and champion spark plugs. See if something there comes to light... That is a more common type of failure. Best regards, -a- Since my plugs are vintage 2002 models, replacement is way past due and just might solve my current problem. Hi resistance definately makes sense, especially if the resistor is cracked. Will advise after I install the new plugs. Hopefully a short flight this weekend over the airport if success is reached! Quote Link to comment Share on other sites More sharing options...
sailon Posted May 15, 2016 Author Report Share Posted May 15, 2016 OK Verdect is in. Cause of the issue was split between the harness with burn thru evident at the holders where they were too tight. Replacement improved the situation somewhat, (had normal runup after 3 attempts, never got a good runup previously) but MK201TUrbo nailed it. New plugs installed. Perfectly balanced EGTs , 60 rev RPM drops both sides. Flew for an hour with no issues, and a MUCH smoother running engine. Measured the resistance of each plug. One was 9000 ohms, a second was 200 ohms intermittantly jumping to open. The rest were between 500 to 2000 ohms. A new plug reads around 500. All plugs had 830 hours on them. Champion lifetime is 500. Flew to another airport to gas up, rechecked mags prior to take off, no issues. Thanks to the forum for all of your help! 1 Quote Link to comment Share on other sites More sharing options...
carusoam Posted May 15, 2016 Report Share Posted May 15, 2016 The power of MS.... All that high voltage is trying to go somewhere. If it doesn't cross the plug's gap. It may escape somewhere else... Best regards, -a- Quote Link to comment Share on other sites More sharing options...
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