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  #1  
Old 03-22-2010, 07:52 PM
jwpatton3 jwpatton3 is offline
 
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Location: mancos, CO.
Posts: 14
Default Hot Starting IO 360

Any tips would be helpful. Just purchased RV-6. Live at 6000 feet. Thanks. John Patton
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  #2  
Old 03-22-2010, 08:26 PM
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Russ McCutcheon Russ McCutcheon is offline
 
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Location: Vancouver, WA USA
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Bendix injection on mine, no prime, throttle open half inch +, mixture closed, when it starts open the mixture half to three quarter. She will shake like a wet dog for 3 to 5 seconds then smooth out, loping and stumbling on taxi out after a hot start is also normal.

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  #3  
Old 03-22-2010, 08:35 PM
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turbo turbo is offline
 
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Talking as long as........

you dont prime it you cant go wrong. many different variations with throttle and mixture positioms. you can always add fuel, once its flooded though, then you have a long crank. you see those planes start after fueling up and a long start, smoke, shaking, too much fuel. ok do the right thing. turbo
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  #4  
Old 03-22-2010, 08:56 PM
Gary Bricker Gary Bricker is offline
 
Join Date: Jun 2005
Posts: 371
Thumbs up hot starts

mixture out, throttle in 1/4, Engage starter, when engine fires slowly push mixture in. Adjust throttle.
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  #5  
Old 03-22-2010, 09:03 PM
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Bubblehead Bubblehead is offline
 
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Location: Keller, TX
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Hot start that always works for me is
mixture full rich
throttle full
boost pump on for 5 seconds
boost pump off
mixture to idle cutoff
throttle stays full
start cranking and it usually fires within 2 revolutions
when it fires slowly bring throttle back and mixture forward about 1/4 of the way at a time

It's worked great for 200+ hours and 2 years. The priming clears out any hot gasoline and maybe (probably) prevents vapor lock. It also makes sure you know what condition the engine is in. Slightly flooded. By putting mixture control in idle cutoff it will lean out quickly and reach the right mixture to fire.
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  #6  
Old 03-22-2010, 11:05 PM
nucleus nucleus is offline
 
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Location: Bozeman, Montana
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Talking Lots of Different Answers!

Wow, flooding the engine before unflooding it; that can't be good for cylinder wall lubrication, can it?

I think that part of the discussion needs to include the shut off procedure, always shut off with the fuel knob to clear the cylinders of fuel.

I give it full throttle (half if it has been sitting for more than two hours), start with the mixture knob all the way back, feed it in as I crank it, works like a charm. Be ready to pull the throttle back when it fires. Dual pmags probably help.

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  #7  
Old 03-22-2010, 11:17 PM
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Greg Arehart Greg Arehart is offline
 
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Location: Delta, CO/Atlin, BC
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This works consistently for me at Reno (5000 ft):

Mixture full lean
Throttle 1/4 to 1/2
No boost pump
Crank till it fires (usually 1-2 blades max) and add mixture, retard throttle

Occasionally (depending on how long the engine has been sitting and if the standard procedure doesn't work first time), I will do what bubblehead suggested, that is, flood the engine on purpose with the boost pump and full rich, then use the same procedure listed above. That guarantees that you know the state of the engine fuel system to start.

Everyone eventually develops their own system that works with their own engine.

greg
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  #8  
Old 03-23-2010, 12:25 AM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
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Mixture full lean
Throttle full
No boost pump or a couple of seconds at most
While cranking, pull the throttle slowly back till it fires (there will be place that the air/fuel mixture is just right to fire up)
As it fires up, push the mixture in slowly.
This method works for me 99.9% of the time. The time that it doesn't work, I will use the same method and the second time around will fire up for sure.
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  #9  
Old 03-23-2010, 01:23 AM
asav8tor asav8tor is offline
 
Join Date: Oct 2006
Location: Seattle, wa
Posts: 679
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Quote:
Originally Posted by Russ McCutcheon View Post
Bendix injection on mine, no prime, throttle open half inch +, mixture closed, when it starts open the mixture half to three quarter. She will shake like a wet dog for 3 to 5 seconds then smooth out, loping and stumbling on taxi out after a hot start is also normal.

Welcome to RVs!!!
AFTER getting it started, turning on the boost pump will prevent the loping and stumbling on taxi out after a hot start. Watch the fuel pressure when this is happening with the boost pump on then off, you will be surprised what you see.
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  #10  
Old 03-23-2010, 01:58 AM
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Russ McCutcheon Russ McCutcheon is offline
 
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Location: Vancouver, WA USA
Posts: 880
Default Boost pump.

Makes no difference on mine.
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