Remember cars were simpler back then, so maybe Gomer picked up on it quickly. His goal in life was he was going to be a doctor, so the intelligence was there, he just took a different path and became an overnight mechanic.
(That's my thought and I'm sticking to it, HA!)
Maybe Goober gave him some "schoolin"...Nobody knows cars and engines like Goober.
Ya, back then he was just working there part time, and was studying to be a Doctor. Calling Doctor Moe, Larry, Curly....and Gomer.
Remember in the episode when Aunt B bought all that meat and the old freezer broke down, he seemed to have no mechanical ability at all then either. Opie had to clue him to unplug it before messing with it.
haha that's funny! Dr Moe Larry Curly, and Gomer.
There was rarely much script continuity throughout the episodes. One cause might well be that there were many more than just one writer.
The actor in this picture was the first Ward Cleaver.
He's a cannon dealer now.
Wow, missed that.
I like looking for things in each episode that I never noticed before. For me it makes watching the show (over and over ad infinitum) more interesting. Here are a few I found:
In some episodes the water crock in the jail is missing
In at least two episodes the coffee pot in the back room of the jail doesn't have a lid. They use a saucer plate to cover it.
When a local is in the jail the keys are left on the peg between the cells. When someone from out of town is locked up the keys are put in the desk drawer (except for the time Barney forgot in S3:E32 "The Bighouse").
Although Walker's Drug Store sells pipe tobacco, no business in Mayberry sells cigarettes, cigars or snuff even though they are often used or mentioned in the show. Maybe Andy and Mr. Goss buy their smokes in Mt. Pilot.
When Frankie Flint goes to the drug store to get some tobacco for her pa, she doesn't specify pipe tobacco or
snuff. I always thought it was snuff.
Correction: Frankie Flint asks for chawin' tobacco for her pa in Walker's drugstore.