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Cold Start Thread


INA201

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5 hours ago, teejayevans said:


Since the time from no pressure to green pressure is only a second and throttle is set to idle, probably not a lot of difference, and cold starts have a wider range on the rich side. Probably not an issue for cold starts, but for hot starts it makes sense to run boost pump before start (see my method in 3003 hot start thread).

Could you explain why you think running the boost pump makes sense?   My understanding of how the Bendix RSA system works leads me to believe that it does literally nothing but make noise and add wear and tear to the boost pump

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One of the best things about the carbureted O-360 is that it starts easily, quickly and reliably using various techniques.  I'm always happy to abstain from all the threads about IO-360 starting problems.

Oh!  I mostly abstain from LOP discussions, too.  :P

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1 hour ago, Mooneymite said:

One of the best things about the carbureted O-360 is that it starts easily, quickly and reliably using various techniques.  I'm always happy to abstain from all the threads about IO-360 starting problems.

Oh!  I mostly abstain from LOP discussions, too.  :P

Spoken like a man that owns a carburetted bird...;) I have started and operated any number of O360s.  The notion that the injected engines are harder to start than carbureted engines is an OWT. How on earth would delivering fuel just above the intake valve make it more challenging to start?  I can say that cold weather starts are somewhat easier with injected engines.   Both fuel systems can malfunction or be out of adjustment and cause trouble.   One is demonstrably more capable than the other. The market attaches a premium to the injected engine for a reason!

 

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1 minute ago, Shadrach said:

 The notion that the injected engines are harder to start than carbureted engines is an OWT.

Why do the majority of the "hard starting" threads on Mooneyspace deal with injected O-360's?

I guess we have a few Old Wives flying IO-360's?  :lol:

Obviously, the IO is a more technically advanced engine with lots of advantages over carburetion (like no carb ice),  but the O-360 is simpler, easier for the average guy to start and cheaper to overhaul/maintain.  Give some credit where credit is due.

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30 minutes ago, Mooneymite said:

Why do the majority of the "hard starting" threads on Mooneyspace deal with injected O-360's?

I guess we have a few Old Wives flying IO-360's?  :lol:

Obviously, the IO is a more technically advanced engine with lots of advantages over carburetion (like no carb ice),  but the O-360 is simpler, easier for the average guy to start and cheaper to overhaul/maintain.  Give some credit where credit is due.

I can't speak to your assertions (though it may be correct) that the "majority" of hard starting threads on Mooney space deal with IO360s. There may be many reasons for this. In terms of birds still flying do you know if more are injected or carbureted? Perhaps there are just more IOs.  I don't know the why behind it, only that one is no harder than the other to start. They are different for sure but not harder.

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Could you explain why you think running the boost pump makes sense?   My understanding of how the Bendix RSA system works leads me to believe that it does literally nothing but make noise and add wear and tear to the boost pump

Saves some resolutions just to have the manual fuel pump bring the system up to pressure. Wear and tear in boost pump or wear and tear on starter?
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