I've noticed when the engine is first started, if I bring the power to idle, it will die unless boost pump is quickly turned on. Sometimes once plane is warmed up, after being flown, the engine will idle fine (around 600 rpm) but other times, even after being flown, it may again want to die if brought to a complete idle. I'm not an engine guru and was hoping for a little direction on the matter. Thanks in advance!

Sounds like you are probably a little lean on your mixture.
There is a rod that goes from the throttle to a mixture valve on the intake. it has a nut you can adjust.
I don't remember which way you turn the nut, but what you need to do is get the plane warmed up and then while on the ground adjust the nut so you get a 50 rpm rise when you pull the mixture to kill the engine. Hope that makes sense.

Ah Ha!!!
I think I just remembered.

Longer = Leaner on the rod

So clockwise will richen the mixture

Could be idle mixture, low idle fuel pressure, or maybe even an ignition issue. Best thing to do is get a competent mechanic to troubleshoot it for you.

That engine is pretty basic, but does require some knowledge. I wouldn't go blindly twisting screws.

gb

you should have a good shop and mech set it up. TCM has a DVD on the fuel set up. Most is the high and low fuel pressure.

the guys are right. Get some one that knows Continental FI to look at it. Those things can be picky.

Remember that the gage that reads in fuuel consumption is actually measuring fuel by pass pressure. I had a customer that thought his 205 was running too rich cause of high readings on his gage but actually it was running lean cause it was bypassing too much fuel. On that 205, the engine ran good exccept for occasionally quitting during take off.

Doctor, Doctor, Doctor, Doctor, I concur. I had a customer 185 with the IO-470 that had the same issue. The throttle/mixture linkages were very sloppy and had to fix those before tackling the fuel flow. Not sure how the IO-520 is set up, but look at the whole system before jumping into the fuel flow set up. That was the easy part. Have the current copy of the Fuel Flow SB goes without saying.