As outside temperatures drop, so does the willingness of my SR20 powerplant to come alive. Tried virtually every procedure in the books, but starting up the bird after a couple of days in around zero C (or 32F) conditions is a frustrating exercise. What doesn’t work is prime for 10 seconds, switch to boost and start. More often than not a fuel stain under the nose is the result rather than a running engine. Leaving the engine to look for a cup of coffee and external power and a subsequent restart after 10 minutes gets it going for no apparent reason.
Anybody any suggestions? Is there a secret prime formula as a function of temperature? Am I the only one having difficulties (i.e is it ME??).
On a lighter note: The performance is more than superbe at lower temperatures!! (as could be expected, but still, I love this airplane!)
Thanks and happy holidays from Europe to all SR20 drivers. Many happy landings in 2001!
Its fairly cold here in New England and starting has been particularly frustrating these last 2 months. In fact, below 40F its been damn near impossible without a pre-heat. 10 seconds of prime then boost will not not start my IO-360 regardless of throttle position and movement. (I’ve had 2 different A&P’s drain my battery giving it their best attempt.)
Out of utter frustration I called Mike Busch and said surely there’s a secret to starting these things and if anybody knows it its you guys in frosty Duluth. Here’s what he said:
PRIME FOR 30 SECONDS! 30 SECONDS! He said that’s how they do it in Duluth and have few problems with cold starts. And guess what?
It works! First time I tried it worked - OAT 34F. (I would have used pre-heat but none was available.)
Mike said you won’t flood the engine priming for 30 seconds but you do need to be careful with all that fuel spilled all over the ramp.
So if its cold and you don’t have access to a pre-heat or you don’t think one should be necessary prime the heck out of that engine - at least 30 seconds plus boost while you crank with the throttle open only a crack and presto, you’ll be pleasantly surprised at how quick your bird fires up.