I am unable to keep the engine going in cessna 172 FS2020 what am I doing wrong?  It starts and then is shuts down after a few seconds.  I have fuel tanks full, mixture full rich, fuel pump on.-Thanks

Fuel valve open?

What airport are you at? Full rich only at or near mean sea level, if for example you are at Lukla (9,300 feet above see level) then full rich would be too much fuel and not enough air.

But as Charlie points out, look down below where the radio mike wire is, there's a shut off valve you need to operate. I'm betting it's that.

 

Edited August 29, 20205 yr by Chock

1 hour ago, npagratis said:

It starts and then is shuts down after a few seconds.

If it starts then shuts down, your mixture is too rich.  If the fuel cutoff were closed it wouldn't even start (if my memory is correct).

I had that problem on my last flight.  Pulled the mixture back to about 80% and it started right up.

I suspect there is a problem where full rich is too rich to run properly.  I usually set the mixture during run-up to give maximum RPM, then set it again at cruise altitude.  Use the digital RPM display on the external view.  On the ground this is usually about 68-70%, and at altitude around 55% or less depending on how high you are.  Lowest I've seen so far is 48%.

Hook

If you’re starting on a parking position rather than a runway then it puts the aircraft into a cold/ dark state including  the fuel valve shut.

It’s the little red pull out know just next to the fuel tank selector right at the bottom almost hidden under the cable for the hand mike.

I know because I had the same issue, the engine looks like it starts for a couple of seconds then stops. From what I’ve read it’s not normal practice to shut the fuel off completely like this when shutting down a Cessna, can’t remember as it’s been a few years since I last flew one

Thank you all!!  I will try the fuel valve.  I am a real pilot trained in CO and flew out of KSQL for 10 yrs (cherokee 180 and v35B).  Never had such a problem in the real plane.  The shutoff valve is part of the "engine fire" procedure.  I will report back.

Thank you guys.  That was it.  Push the fuel valve in.  I flew around San Francisco, where I was based at.  The scenery is amazing and the 172 behaves well.  As close as the real thing.  I am impressed.  In the next version though they need to take the excess taxi lights as they are everywhere, at least in KSQL and KHAF.