Replies to This Discussion

Permalink Reply by Jan Eggenfellner on December 2, 2024 at 12:39pm

It should not be hard no, how many attempts at starting? 

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Permalink Reply by Jan Eggenfellner on December 2, 2024 at 2:26pm

Per our discussion with you - always helpful to remove the alternator and the load on startup when colder temps. Will await your feedback. -Alissa

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Permalink Reply by Richard Cooley on December 19, 2024 at 12:06pm

Hi Alissa and Jan,

Usually my plane (Viking 130) starts on the first crank, though sometimes (especially if it's warm/hot) it can take 5 or 6 attempts to get it to fire.  I don't turn on the alternator until after the engine is running.  I keep in a heated hanger at 50f, so never cold, even in winter.

Also, on occasion, it will get a back fire.

Should I be concerned about difficult starting when warm, or back fire?

Thanks, Richard Cooley

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Permalink Reply by Jan Eggenfellner on January 7, 2025 at 6:56am

Hey Richard, I'm unsure when the last ECU update you had is? This was purchased through someone else right? 

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Permalink Reply by Richard Cooley on January 7, 2025 at 12:50pm

Hi Jan,

My plane is the 130 install you did for Paul Mason,  I believe in 2019.  I haven't changed anything since.

Is there an ECU update I need to perform?

Also, I have two Odyssey Extreme batteries.  On start, my Dynon Skview will shut off then reboot after the engine starts. This didn't used to happen.  What would cause this?

Thanks, Dick Cooley

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Permalink Reply by Richard Cooley yesterday

I thought I would respond to my own question, plus clarify. When I said backfire, I didn't mean through the intake, I meant out the exhaust.  I talked with an experience foreign car mechanic and he explained first the criteria than needs to be met on a fuel injected and electronic spark engine before it will fire.  He said the "backfire" though the exhaust is probably the result of late criteria being met.  He also said, "backfire" though the exhaust is not a real issue, that the exhaust side of the engine can withstand that, whereas a real backfire on the intake side would be an issue.

Jan had me send in my ECU for an update, though that didn't change anything with difficulty starting when warm, or the occasional backfire through the exhaust.  I have followed up with Jan with text and voice message on the backfire, though haven't heard back.

Does anyone else have an opinion of backfire through the exhaust?

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Permalink Reply by Larry Zepp on January 9, 2025 at 10:13am

Hi Jim,

If you have access to power, you can build an engine pre-heater for your 130. I used a ceramic heater and some galvanized duct to heat my Viking 110. This directs warm air into the bottom of the Viking cowl. In a Michigan hangar with temps from freezing to -20F, the engine stays about 50 F with the electric heater running continuously. With preheat to 50F my 110 starts right up.

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