Jsno

You can get the records on it from the FAA. That will have any 337 forms ever submitted for it. Sitting so long the engine and prop probably need an overhaul or at least a tear down and IRAN with new seals. You can inspect and document AD compliance. Check the weight and balance against the equipment installed. Probably all engine and brake hoses need replaced. Probably all seals in the brake system need replaced. Nothing like a brake reservoir on the inside firewall leaking all over your carpet. In short I would buy it as a project and plane on a year or three before flying it.

I had that issue on my M20F three months ago. Found that the 70 amp circuit breaker broken off where the wire connects to it.

Could be your engine driven fuel pump.

I had the Aircraft Hose Store make mine up. They were a good price.

Spalling is unfortunate and expensive. Usually caused by the engine sitting too long between runs.

The sealant on top could be deteriorated and it will evaporate. Also check inside at the wing root for a leak into the cabin. Pull some panels at the leading edge and check the front spar.

All the A&P can do is give a list of discrepancies to the owner and document any maintenance actin that he has done in the log book such as “removed filter and inspected, found eraser head size amount of ferrous metal in the filter.

Sorry about the auto correct changing some of the words.

Removing the lower cowl does take some time. You haven’t seen to disconnect the landing light, cowl doors, oil cooler, oil line clamps, oil line heat shield. Disconnect the inlet boost duct. Remove bolts at lower firewall. All of this in a very tight space. It does take quite a bit of time to do that and reassemble.

I had to change one of the nut plates. I just bit the bullet and bought from Laser because I could not find anything else.

I found a May 16, 2022 posting from SHiney Moose, N2983L, saying he had a nose gear disc removal tool that he would loan.

You can remove the truss and then place it into a hydraulic press to remove the discs.

I would use Pulley lube oil sold by McFarlane. A lot of penetrating oils have wax in them that will build up and become a gummy mess.

Austro makes one for the Diamond aircraft. 168 HP but about 100 lbs heavier than an IO360.

Buzzing is good. You can check the wire from the SOS to the mag. If that ids good, pull the mag and check the points.