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78WG Engine Woes http://thorp18.com/thorpforum/viewtopic.php?f=35&t=8241 |
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Author: | Andy475 [ Thu Jun 28, 2018 5:45 pm ] |
Post subject: | Re: 78WG Engine Woes |
Thanks for all the replies! I ruled out some other suggestions, fuel breather is good, induction system is good, no low compressions, and the mixture position is definitely not a player. The issue is getting worst and now shows up cool and in the Mag check with excessive (but stable) drops, and low static rpm (even when leaned). I'm only seeing ~1900-1950 static full rich were I used to see 2100-2150, and it might bump up to 2000 leaned out. The Mags are being pulled out for the 500 hour which is coming due and because frankly I can't really think of anything else it might be. I'm still scratching my head about why they both seem to be going together and at the same rate. I'll pull the screen too and make sure my cam lopes aren't in there. Fingers crossed. Good news is with the newly overhauled carb its super easy to start... I swear the Luscombe is getting her revenge for being left out of the KOSH plans this year. Cheers, Andy |
Author: | Jeff J [ Thu Jun 28, 2018 6:10 pm ] |
Post subject: | Re: 78WG Engine Woes |
If the cam and mags check good, the only other thing I can think of is sticky valves. I don't think it would be the cam. The problem would be more consistent (I kinda feel that way about the mags too, unless the timing is drifting). |
Author: | fytrplt [ Thu Jun 28, 2018 8:37 pm ] |
Post subject: | Re: 78WG Engine Woes |
Dont rule out plug wires. |
Author: | Jeff J [ Fri Jul 06, 2018 9:12 pm ] |
Post subject: | Re: 78WG Engine Woes |
Any progress? |
Author: | fytrplt [ Sun Jul 08, 2018 9:57 am ] |
Post subject: | Re: 78WG Engine Woes |
Just don't get no better! |
Author: | flyingfool [ Sun Jul 08, 2018 7:09 pm ] |
Post subject: | Re: 78WG Engine Woes |
That is an awesome picture! |
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