There are some great homemade Special Tools (SST) that MUD members have made. I have run across some great threads. For instance, here is the Fuel Pressure Tester that Kynot62 built:
https://forum.ih8mud.com/60-series-wagons/302376-efi-troubleshooting.html
And here is the Brake Bleeder that ntsqd introduced us to (see post #6):
https://forum.ih8mud.com/60-series-wagons/350371-brake-fluid-flush-any-quick-tricks.html
So, if you have a great home made SST, share it with us.
https://forum.ih8mud.com/60-series-wagons/302376-efi-troubleshooting.html
And here is the Brake Bleeder that ntsqd introduced us to (see post #6):
https://forum.ih8mud.com/60-series-wagons/350371-brake-fluid-flush-any-quick-tricks.html
So, if you have a great home made SST, share it with us.