My sister couldn't reach me and had her kid's '90 245 towed to a dealer near Brunswick, Maine because of a nostart issue. Called back later and was told it was a faulty FPR, and that it took tech 1.5 hours to diagnosis it. She called me and I called the dealer for a little chat. That diagnosis/fix generally takes me about 3 minutes--that long only because I'm lazy and first fiddle with the fuses by my knee hoping I won't have to get out and walk around to passenger side. I would have to guess that over my 25 years of driving 240s, 95+% of the time a 240 no start for me has been either fuse or FPR. BTW, I told her to retrieve the original FPR for a spare, since problem probably was simply moisture/connection and unplugging/plugging likely would have solved problem. They said they tossed it "because it was the original part." So, it took them 1.5 hours to determine that a "date stamped" 20 year old electrical part, the most important and weakest link in the chain, that is responsible for the vast majority of 240 no starts, was the cause.
How long do you think it should take a competent "technician" familiar with 240s to determine FPR is the problem?