Last week I flew to lunch in the -10, and had a rough engine just after takeoff.
EFIS data showed #6 cylinder not firing on the R mag.
Pulled the plugs, top plug (R mag) had very weak spark in the bomb tester.
Replaced the plug, went flying this evening.
In flight mag check ... #6 is good on both mags, but now #5 goes cold on the L mag. Mag check on the ground is totally fine.
Seems a bit odd for a coincidence, but the engine and plugs are ~2008 vintage (Lycoming from Van's) and first flew in 2016. Stuff I've read online seems to hint that Champion had some plug issues in years past.
I haven't pulled the #5 top plug yet, but the failure mode is exactly the same.
I'm thinking of just replacing all the plugs with Tempest plugs.
What are most of you -10 guys using? The chart shows both the -38 and -40 as applicable, is there a plus / minus to either type of plug?
Thanks in advance.
EFIS data showed #6 cylinder not firing on the R mag.
Pulled the plugs, top plug (R mag) had very weak spark in the bomb tester.
Replaced the plug, went flying this evening.
In flight mag check ... #6 is good on both mags, but now #5 goes cold on the L mag. Mag check on the ground is totally fine.
Seems a bit odd for a coincidence, but the engine and plugs are ~2008 vintage (Lycoming from Van's) and first flew in 2016. Stuff I've read online seems to hint that Champion had some plug issues in years past.
I haven't pulled the #5 top plug yet, but the failure mode is exactly the same.
I'm thinking of just replacing all the plugs with Tempest plugs.
What are most of you -10 guys using? The chart shows both the -38 and -40 as applicable, is there a plus / minus to either type of plug?
Thanks in advance.