Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 CEL P0173 - Rear Adaptive Maxed Out - Help

Mine threw that code. The little nib on the spatk plug end had become unscrewed.
Check your plug wires?

Updates: Code is gone. Hopefully for good.

Installed a new Fuel System kit from Morgan Custom Designs. I cannot say enough good stuff about Emil and the quality of his kits. His kit allows both fuel rails to get fuel at the same time, exactly as S&S designed it. (Check the S&S X Wedge catalog to see the proper way to fuel this motor). A bonus to the kit is my MOG now has a fuel filter BEFORE the injectors.... just like every other car on the road. And a fuel pressure regulator that can be set to any PSI and monitored via the in-line gauge. The kit is easy to install with good instructions.

After seeing some questionable looking parts in this process I also installed a new MAP sensor, new IAC valve, and a new air temp sensor.

Still running the replacement stock fuel pump with about 500 miles on it. I will switch over to the Walbro custom system this winter as I have all the necessary parts.

Try running at 60psi, if you have the free-flowing filter and exhaust - my car is much happier.

Agree Bluebricked, Emil's kit looks a great bit of kit and would love to fit one.
Very poor of Morgan to filter the fuel on the return to tank line but done so that they could use a cheap combined filter and regulator i guess.
The S&S X Wedge catalogue I've seen shows the fuel feed pipe go to a Tee between the injectors and is a non return supply.
As you know In the 3 wheeler its fed to one injector then across to the other then back to filter/regulator. With the amount of flow from the pump i would be surprised if the amount of fuel and pressure to each injector is unbalanced plumed this way but may be wrong of course!

Emil's fuel lines were a huge improvement in how my Morgan runs as well. Much smoother and starts much easier.