Hot starts

[Dave p]

Does anyone have recommendations for hot engine starting A75 with stromberg carb?

[cvavon]

Re: Hot starts

Don't prime it pull it threw 4or 5 blades and listen for a sucking noise from the air intake make the mags hot and it shoud start

[Robert Lees]

Re: Hot starts

Does anyone have recommendations for hot engine starting A75 with stromberg carb?

65 or 75 or 85 with Stromberg will start hot with no prime or pull-through, but requires a little more throttle than a cold start.
I use 1 inch of throttle with someone competent in the seat (and on the brakes) and with chocks, or I swing from behind the prop with my left hand in the cabin to bring the throttle back to idle immediately upon start. The engine will run up quick.

The trick is the 1" of throttle and NO PRIME and NO pulling through.

Rob

[fearofpavement]

Re: Hot starts

On our O-200, it is a pain to hot start and what I find out works very well is to just turn off the mags at idle. When it is time to restart, I don't touch anything except to make the mags hot and it usually starts on one or two blades. (normal shutdown is with the mixture)

[M Towsley]

Re: Hot starts

Continentals instructions for shutdown is to allow the engine to idle then turn off the mags. As the engine is running down, briskly advance the throttle until it is full open. I am assuming this keeps the engine from pulling fuel into the carb while at idle setting, causing a rich/primed hot start. Remember, you can prime the engine at idle while pulling the prop through, the same thing happens while your engine is winding down after mag shut off.

Don't forget to move the throttle back to idle before you exit the plane or your next start is guaranteed to be exciting.

[3Dreaming]

Re: Hot starts

Does anyone have recommendations for hot engine starting A75 with stromberg carb?

What mags do you have? Do they have impulse couplings?

[barnstmr]

Re: Hot starts

it would be best to get at the root of the problem and make sure you don't have weak coils in the mag or excessive spark plug gap.

[Ryan]

Re: Hot starts

Ours starts hot by the third pull everytime no matter the temp. We do not have impulse. Had sometrouble around the fourth of July hot starting (Cold starting was fine). Right Mag went bad during run up few days later. Changed out the mag and have had no issues since in close to 100 degree temps. We hot start ours similar to what Chuck suggested. Being the first year run in many years we had to find "What worked" and that procedure seemed to be it. (A65, SF4 Mags, Strom Carb)

[1938BF50]

Re: Hot starts

My A65 starts hot EVERY time if shutdown exactly as Marty says. At idle, cut the mags and advance the throttle full open. Restart is with no prime, just go hot with the mags and throttle set 1/8" out.

[barnstmr]

Re: Hot starts

Scintilla mags are known to have a "hotter" spark (stronger coil) it also matters whether you have impulse coupling.

[perryv1]

Re: Hot starts

Continentals instructions for shutdown is to allow the engine to idle then turn off the mags. As the engine is running down, briskly advance the throttle until it is full open. I am assuming this keeps the engine from pulling fuel into the carb while at idle setting, causing a rich/primed hot start. Remember, you can prime the engine at idle while pulling the prop through, the same thing happens while your engine is winding down after mag shut off.

Don't forget to move the throttle back to idle before you exit the plane or your next start is guaranteed to be exciting.

Ive tryied that a couple times but it starts better just by turning the mags on with a little throttle and starts good

[Hank Jarrett]

Re: Hot starts

You rarely see two small Continentals that work exactly the same. If you take the engine out of service and store it, the procedures will change. If you top it or do a major, the procedures seem to change. I don't know what it is, but once you find the right little "tweaks" for YOUR engine for starting in warm and cold weather and with the engine cold or still warm, you will have it pretty well covered. It will stay the same for years and seem to work every time.
You can NOT rely on how the guy in the other hangar starts his plane, no matter HOW well it works on his. Just keep trying what you can till you "break the code" for your engine. Once you do, it will start in one flip almost every time.
Always worth it when someone with another 65 engine watches you and says "it'll NEVER start that way!" and yours fires up on the first flip.
Hank

[crispy critter]

Re: Hot starts

Hank,
I always pretty much use the same precedure for every A65/75 with a stromburg carb and have never had any major issues....occasionally a little cranky hot starting if I forget to turn off the gas while its setting or somthing, and sometimes cold weather starts take a few start & quits before they want to idle but that's to be expected without preheat. I always cold start the same way, I always shut down the same way for hot starts which is a little different then what I do if I'm shutting down for the day.

[KewFlyer]

Re: Hot starts

Well, this is my " engine code":

Hot or cold start:
With the mags off, 1/8" ( plus minus) throttle open, one full blade backwards, mags hot, and a good pull usually does the trick.
[ you can hear a hisss sound of the cylinders getting charged..... or it could be my imagination ]

Shut down: I let the engine idle for say 1 minute, while I get things ready and organized to exit the plane, then run on one mag for a few seconds...say 10 to 15, and then to off. I don't touch the main fuel valve; stays open at all times.

Stromberg carb and CASE mags (not for long !!!).

Hope this helps

Ralph