[SgtZim]

IO-360 with standard Van's depicted fuel pump and lines to the engine. I noticed a couple of times after shut down, I come back to look at some info on the EFIS and notice then that the fuel pressure is still pretty high - around 30 psi or so. Actually got a caution light when it went over the high limit for the Lycoming specs. I open the mixture again to bleed it off.

Is this cause for concern? Thanks.

 

[DanH]

Nope. Just means you have a mixture valve with a very low leak rate. Pump poppet valve too.

The rise is due to temperature

 

[SgtZim]

thanks Dan