Hello,

The other day I started a free flight, engine on, ready to take off and then had to quit a couple of hours.

The Black Square Bonanza stayed there for a couple of hours...

Today when I start a flight with the same Bonanza, the engine is very weak and even if I apply full throttle.

I think it's a persistent damage to the electrical circuit or engine.

But I could not find an option to fix that in the tablet of the addon.

Any idea please?

 

Solved on my end — posting back in case it helps anyone hitting the same wall.

What happened: the Black Square Bonanza saves engine health, oxygen pressure and active failures between flights (it's stated explicitly in the manual). Leaving the engine running unattended for ~2 hours almost certainly fouled the spark plugs and degraded the overall engine condition, and that damage carried over to the next session.

The fix is on the tablet, but not on the Options page where most of us look first. Open the **Engine Visualizer** page — the one with the cutaway view of the engine showing pistons, cylinders, fuel and oil lines. The buttons you need are in the column at the bottom of that page (easy to miss, since the eye goes straight to the animation):

- **Repair Engine** — resets engine condition to 100%. Requires confirmation.
- **Clean Plugs** — removes all spark plug fouling. This was the one I was missing.
- There are also buttons for battery recharge, clearing flooded cylinders, etc., on the same column.

As a backup, if any MTBF failure was triggered during the 2-hour idle, go to the **Failures** page and hit **Reset All Failures**.

None of my engines make it to TBO- on anything.  🤠

You can clean fouled plugs on the Comanche by running the engine full rich at ~2,200 rpm for 30 - 60 seconds. If still fouled, allow the engine to cool and repeat.

I wonder if this works on the Bonanza.

 

4 hours ago, flyingscampi said:

You can clean fouled plugs on the Comanche by running the engine full rich at ~2,200 rpm for 30 - 60 seconds. If still fouled, allow the engine to cool and repeat.

I wonder if this works on the Bonanza.

 

You can chose "fine wire" and forget about foul plugs

49 minutes ago, sd_flyer said:

You can chose "fine wire" and forget about foul plugs

Or press the 'clean plugs' button on the tablet 🙂

I just found it interesting that the Comanche engine accurately modelled plug fouling and cleaning.

Just now, flyingscampi said:

Or press the 'clean plugs' button on the tablet 🙂

I just found it interesting that the Comanche engine accurately modelled plug fouling and cleaning.

When I flew Pipers I had to clear mags almsot every single flight on runup, it's kind of became a routine! Some of my students would freak out when engine shake on fail mag, but over time get to use to it and able to handle it before their solo. 

On the Bonanza I would separate plug fouling from persistent wear. If I taxi or idle too long full rich, I can definitely foul the plugs in that flight, but I have not seen it behave like some mystery permanent damage state by itself. If the annoyance is mainly the plugs, fine-wire plugs or the tablet clean-plugs option pretty much solves it.

I just picked up the bonanza/baron package.  Love it.  Wish I would have done it sooner.  I would say on average 70% of my flights are airliner.  But then I go thru spurts where all I do is GA.  Have always liked the Grand Duke.  But now enjoying the turbine bonanza and likely soon the baron.