Mysteries Solved! How to Start a Fuel Injected Engine.
Join Date: Jul 2005
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Idle speed
Why would you need to adjust the RPM back to 1000'?
My IO550 just burbles into life and settles at 7-800 rpm.
My IO550 just burbles into life and settles at 7-800 rpm.
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4. The engine should be operated at engine speeds between 1000 and 1200 RPM after starting and during the initial warm-up period. Avoid prolonged closed-throttle, idle-engine speed operation (when possible). At engine speeds from 1000 to 1200 RPM, the spark plug core temperatures are hot enough to activate the lead scavenging agents contained in the fuel which retards the formation of the lead salt deposits on the spark plugs and exhaust valve stems. Avoid rapid engine-speed changes after start-up, and use only the power settings required to taxi.
Grandpa Aerotart
an 3_bolt I didn't say I don't adjust the rpm UP to 1000 rpm, when the oil pressure and temps justify it. I just like my engine to burble into life, particularly when cold, rather than roar into life.
I see Lycoming hasn't changed its position on LOP EGT ops.
I see Lycoming hasn't changed its position on LOP EGT ops.
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On the topic fuel... A 310 pilot parked his plane at a bowser and walk off to get his pax after he fueled up. I was only a little bit pissed at the fact he left his plane in the way for a good 10 minutes. (I was angree coz we are talkin 35 degree day) This is the good part... Once he gets back to the plane he tells me along with his pax he didnt want to start up and taxi to the terminal as the engines are a bitch to start when hot, and he wanted to save the starter. I thought F$%K i am flying a Baron I can manage just fine but i didn't say anything. Then I thought for a minute while i watched him star up. ahhhh i know he makes his pax walk everywhere... He is flooding the girl. Myself having flown both the c310 and baron which both have the continental IO520's figured out what this guy's problem was. He was priming the engines way to long and flooding them. This is why he couldn't start them. (my thought anyway) I thought it was great having to sit for another 10minutes while he started his engines. I bet his LAME would love the fact he is tryin to save the starter but would his OPs manager like the fact he is makeing pax walk everywhere, after all they paid to fly.....
8) immediately allow the aeroplane to taxi forward 1.5 aeroplane lenghts in case excess fuel has been pumped out onto the ground and lit up during the start
An excellent piece of advice, which sadly, isn't taught to the kiddies anymore these days. It's commonsense and good airmanship really........and that's not taught either
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I thought it was great having to sit for another 10minutes while he started his engines.
The 310, easy to start hot. Everything closed, pumps on low, purge the lines. Everything forward and a small squirt from the primer (about a second), close throttles, crack to 1/4 inch, crank and it'll fire. Then sit nicely on 1000.
Last edited by propblast; 24th Jun 2010 at 05:32. Reason: didnta maka censa
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Unlike the IO540 in the Retard Vehicle, which has been known to NOT start! 
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The Seneca is a prick of a thing, and its not over once they are started especially on a warm day, that primer button gets a working over - nothing like getting a clearance to line up then having one of the donks stop and refuse to start too... Also a pain after landing when trying to cool the turbo's on the taxi in and you have to keep the engine at 1200 RPM just to keep it running. Why couldn't Piper just put O470's in it??
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I was taught to use the flooded start method when the io520 was hot. DONT It's a very bad way to do it. If the engine backfires fuel will ignite and burn right back to the air filter. Dont ask me how I know. Continuing to operate the starter is good if you know theres a problem and the battery is not nearly flat but you might not have that luxury. Cessna Pilots Assn. recommends for a hot engine (1) full throttle, mixture idle cut off , boost pump on high up to 2 minutes. (2) mixture full rich, throttle idle, change fuel tanks,short burst with the boost pump. (3) engage starter and slowly advance throttle. Works every time and no fire danger. This method purges the hot vaporized fuel from the fuel lines and replaces it with cool fuel without pumping any into the manifold.Changing tanks ensures you don't immediately reuse the purged fuel. The short burst clears the injector lines and puts a small amount in the manifold for starting. Normally I dont need to use this method until OAT is 35+ and the plane has been shut down 10-20 minutes.
Safe Starting RA
Safe Starting RA