Hot Starting a Mooney Rocket

[David Mazer]

The article that was referenced was specifically discussing turbocharged, piston engines.  I don't know if the information would cross over.

[74657]

Quote: BobAustin

Will this procedure work on a Missile (IO 550) that only has a high boost not low boost?

In the past I used this with my Cessna 340 with uses the same tsio520 that the Rocket uses...worked fine. 

Bob

[kortopates]

The referenced material is good for all Continental fuel injected engines, turbo or not, since the use of boost pump is based on the fuel system. (althoug turbo engines do use different pressurized injectors, this is about flow between the ump and the fuel divider). However, some of the details quoted are incorrect for the Mooney K models that have separate Low, High boost and Prime circuits. I can't speak for the modified Missile/Rocket installations, but in the K model TSIO-360 LB/GB/MB/SB engines you must use the high boost pump (not low). This is the pump that will circulate cool fuel through the fuel divider and back to the tank providing the mixture is at Idle cutoff. Run without being fully at idle cut off and you'll be pumping fuel directly into the cylinders and then out the thistle valve out exposing yourself to fire danger as I believe Bryon gave example of us above. Secondly, if you review the approved data, specifically the Continental Engine Operations manual for your specific engine (like any good scientist reviews the available literature  ) you'll note for the TSIO-360's they recommend 15 seconds usage of the high boost pump - not the 60 seconds the Deakin article says. Maybe they recommend longer times for different engines - but I can't say. But I've personally found 15 seconds quite sufficient for the K's TSIO-360's. 

Also Note the Lycoming fuel injections systems don't share this Continental design feature that allows circulating the fuel at ICO.

Lastly, if you should catch on fire from over priming/flooding, the proper procedure is to continue cranking the engine to put it out. If that fails, use the fire extinguisher you carry in the plane.

[lrsi5774]

Thanks for the replies guys.

One question (Sorry for being the newbie here):

"At the end of the sixty seconds, let the electric pump continue to run while you push the mixture in until the fuel flow stabilizes (as for the cold start)"

What is meant by "fuel flow stablizing"?
I have an EDM930 so will that show stablized fuel flow?

Also, I assume the throttle is cracked for the 60 seconds so the only thing you change at the end is moving Mixture from Lean to Full Rich.

 

 

[David Mazer]

After 60 seconds, I turned off the low boost pump and used my prime pump for 3 sec., Aviatoreb uses 7 sec, and started up per my usual cold start technique.  Worked like a charm.

[aviatoreb]

Quote: Mazerbase

After 60 seconds, I turned off the low boost pump and used my prime pump for 3 sec., Aviatoreb uses 7 sec, and started up per my usual cold start technique.  Worked like a charm.

[PTK]

Quote: lrsi5774

When I cold start, it fires up like a champ.

However, I cannot figure out how to best do a hot start.

Does anyone know any tricks out there?