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LS3 Misfire

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TXFlyGuy

Well-Known Member
Joined
Apr 25, 2012
Messages
2,972
Location
Republic of Texas
No...not my plane.

But another T-51 owner has the newly installed LS3 engine. With a Link G4+ Xtreme ECU. The engine runs perfect, for about 15 minutes of flight. Then after getting warmed up, it misfires. No one seems to have a clue why.

My money is on:

1. Coil pack that fails when hot, so plug doesn't fire
2. HT lead that has a break and resistance increases when hot, so plug doesn't fire
3. Faulty injector

Anyone here care to take a stab at a diagnosis?

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