Mxfarm
Line Up and Wait
As a whole, people's situational awareness these days is terrible. They're in their own head, oblivious to what is going on around them and we have to take that into account.
That’s usually from a lack of understanding why it’s hard to start or having a flawed technique. Once you figure out what the correct combination is, it’s a non issue.
Edit: not calling you out specifically, just saying “you” as in the pilot.
That’s usually from a lack of understanding why it’s hard to start or having a flawed technique. Once you figure out what the correct combination is, it’s a non issue...
eh, easier to do when you're an owner and fly the same plane all the time. that's how you "figure out the correct combination". not always as easy when you're renting different planes and they each have their own little hot start quirks. but yeah, 'understanding' is key.
Once you learn the technique, it's not difficult at all.
There's actually a couple that's worked for me...So tell us the technique! Don't be stingy!
That's exactly how my io540 starts. Any prime at all when it's hot will flood it. It was my first fuel injected engine and I spent a lot of time fretting about hot & cold starts. Then I tried doing what the POH says as opposed to tribal knowledge or "my cfi told me", and lo & behold it worked!There's actually a couple that's worked for me...
@asicer method (Lycoming IO360 and IO540):
0. Just prior to shutdown, set the throttle to 1000RPM and then pull the mixture. After this, don't touch the knobs/levers!
1. Don't touch the knobs/levers! Mags on and then crank. When it catches, mixture full forward.
2. If after 10 seconds it fired once and then died or it never fired, this means it's cooled off enough to take a prime:
(a) wait for starter to cool
(b) boost pump on
(c) mixture forward until fuel pressure stabilizes
(d) pull mixture
(e) boost pump off
(f) mags on and then crank. When it catches, mixture full forward
@Ted method (Lycoming IO360 and IO540):
https://www.pilotsofamerica.com/community/threads/182-hot-start.87080/#post-1923696
I usually use the @asicer method because it's easier for me to remember.
Also, Continentals use a different technique.
How can 1 ever work? If you shut off by starving the engine, how will it start up again without giving it any fuel?There's actually a couple that's worked for me...
@asicer method (Lycoming IO360 and IO540):
0. Just prior to shutdown, set the throttle to 1000RPM and then pull the mixture. After this, don't touch the knobs/levers!
1. Don't touch the knobs/levers! Mags on and then crank. When it catches, mixture full forward.
2. If after 10 seconds it fired once and then died or it never fired, this means it's cooled off enough to take a prime:
(a) wait for starter to cool
(b) boost pump on
(c) mixture forward until fuel pressure stabilizes
(d) pull mixture
(e) boost pump off
(f) mags on and then crank. When it catches, mixture full forward
@Ted method (Lycoming IO360 and IO540):
https://www.pilotsofamerica.com/community/threads/182-hot-start.87080/#post-1923696
I usually use the @asicer method because it's easier for me to remember.
Also, Continentals use a different technique.
There's actually a couple that's worked for me...
@asicer method (Lycoming IO360 and IO540):
0. Just prior to shutdown, set the throttle to 1000RPM and then pull the mixture. After this, don't touch the knobs/levers!
1. Don't touch the knobs/levers! Mags on and then crank. When it catches, mixture full forward.
2. If after 10 seconds it fired once and then died or it never fired, this means it's cooled off enough to take a prime:
(a) wait for starter to cool
(b) boost pump on
(c) mixture forward until fuel pressure stabilizes
(d) pull mixture
(e) boost pump off
(f) mags on and then crank. When it catches, mixture full forward
@Ted method (Lycoming IO360 and IO540):
https://www.pilotsofamerica.com/community/threads/182-hot-start.87080/#post-1923696
I usually use the @asicer method because it's easier for me to remember.
Also, Continentals use a different technique.
When you pull the mixture lever you stop flow of fuel at the servo, but the lines still have fuel in them. As the engine heat soaks the fuel injector lines, it vaporizes and pushes some fuel/vapor into the heads, basically priming the engine. That's why priming a hot engine tends to flood it... it's already primed.How can 1 ever work? If you shut off by starving the engine, how will it start up again without giving it any fuel?
I once spent a good 10 minutes trying to start a rented DA20 with the fuel injected Continental. Although I had almost 250 hours at the time, I had less than 10 in the DA20 and not much more than that in fuel injected aircraft in general.
You know what I did? I got the POH out and read it. Started right up.
There's actually a couple that's worked for me...
@asicer method (Lycoming IO360 and IO540):
0. Just prior to shutdown, set the throttle to 1000RPM and then pull the mixture. After this, don't touch the knobs/levers!
1. Don't touch the knobs/levers! Mags on and then crank. When it catches, mixture full forward.
2. If after 10 seconds it fired once and then died or it never fired, this means it's cooled off enough to take a prime:
(a) wait for starter to cool
(b) boost pump on
(c) mixture forward until fuel pressure stabilizes
(d) pull mixture
(e) boost pump off
(f) mags on and then crank. When it catches, mixture full forward
Yep, use the proper procedure on hot starts. However, if you shutdown for a few seconds to deplane a passenger, you're not likely to have issues on restart. It generally takes a bit of time for the fuel to cook in the lines to make the IOs balky on start (like long enough to refuel).
I have no problem shutting down for 30mins grabbing and drink in the FBO.. beats everyone looking at you as you cant get the engine re-fired as you toast the battery/starter tryingeh, easier to do when you're an owner and fly the same plane all the time. that's how you "figure out the correct combination". not always as easy when you're renting different planes and they each have their own little hot start quirks. but yeah, 'understanding' is key.
Perhaps. But, I don't see any issue in filling the lines back up again before cranking. It's essentially a flooded start procedure already, might as well make sure there's enough fuel before trying. Has always worked for me.When you pull the mixture lever you stop flow of fuel at the servo, but the lines still have fuel in them. As the engine heat soaks the fuel injector lines, it vaporizes and pushes some fuel/vapor into the heads, basically priming the engine. That's why priming a hot engine tends to flood it... it's already primed.
I think...I could be all wet here.
Years ago during training with my CFI, as we were taxiing into the very busy FBO ramp to park, someone's kids came running straight at us. Seemed like slow motion, I did everything at one time mixture- ignition and it still seemed to take forever to get the prop stopped ...
For hot starts, pull out the checklist or POH, seems to work. Sometimes I use the boost pump to start, sometimes I don’t, as long as I primed it before, it still starts nicely.
That poor daughter (really, anyone near this, but especially her). She'll never, ever forget this, and odds are pretty good she saw the whole thing.
The pilot was a complete moron for letting that woman exit the airplane (especially since she had to exit toward the prop) with the prop spinning. I presume he did this to avoid a hot start on the IO-360, which was especially problematic on the DA-40.
Just awful. I would never allow a pax to exit an airplane with the prop spinning, but if they did, and they turned into hamburger helper, I'd have an awfully tough time flying again.
I'm guessing you don't count the ventilation detent, no?Coincidentally to this accident, I have owned a DA-40 for the past 21 years. I don't even unlatch the canopy until the prop is stopped and the aircraft is powered down...