Great insight into these rare and under appreciated models. Thanks Tom.

Hey Tom, just had my 85 Mondial QV at the local Ferrari dealers here in OZ, (I won't say which state) for it was under powered. They traced it to a faulty, or worn out throttle body, which they suggested to rebuild. I agreed for the work to be carried out. After the work was completed, they were going to reverse the Ferrari off the lift. So the mechanic got in and started the engine...it idled good. Then he put it in to reverse gear and moved it about 10 inches pushed the clutch back in and the engine immediately revved to max...as far as it could go, but only for a couple of seconds and the clutch pressure plate exploded. Parts went through the bell housing, through the engine cover, through the back window and lodged in to the roof and its lining. The damage is so extensive we are looking at a write-off. This happened two days ago. To say I'm devastated to lose my old friend after 15 years of love and joy, is an understatement. Oh, and luckily no one was injured, or killed. The damage to the car is only a disaster, however, a death would have been a terrible tragedy. Thanks for your videos !! Marc

Thanks for the tip, very good to know.

Had an earlier 400 and loved the car, but the maintenance (and attendant costs) were insane. I've owned Ferraris for many years and do the vast majority of my own work...but the 400 was just too much trouble to service. My 330 2+2, by comparison, is a breeze to work on, if not so "modern". I stilll think the 356/400 is one of the handsomest of the newer Ferraris (I'm an old guy, so "newer" is a relative term), but even my long-time Ferrari wrench hates to work on them. Compared to my old Daytona (which I owned LONG before they became precious collectors' items), both the cost and hassle of the maintenance is crazy...yet (or perhaps because of this) the car is worth a fraction of a Daytona's price.

What's really frightening is the repair bill that comes after you've stopped crying!

Hopefully the 365GT4 owner will fix the motor rather than swapping it or parting it out.

Is the filter part of the housing? Interesting how those end stacks are right up in the filter media. Ferrari must have been _really_ pressed for space to go this route.

What would be the main cause for the float to get stuck ? Is it by chance or due to lack of Weber service ? Is it likely to happen on a well kept example ?

Hydrolocked cylinder cracks the cylinder? I'm not a Ferrari expert, so this is intriguing. Ive seen my share of bent rods and even lifted heads/pulled studs. Hard to imagine you can crack a cylinder *_at the deck_* (where the fluid will be compressed)

Where does the fuel drip to in the downdraft carburetors? Does it just strip on top of the engine?

I have customer have 365gtc with weber 40dfi it have smoke on idle all the time (unborn fuel) the only time it will stop smoking if I close the idle fuel needle, but once I open it and the cylinder start working it will smoke immediately. Is it normal for these engines to keep smoking? Thank you

$5 part causes $50K in damage, oof. Definitely not a good day.

I alwys knew that Italians like the British tend to build cars in a way that servicing them is ridiculosly complicated. I heard of a newer Bentley. In order to change the aircon compressor you hav to diconnect the fenders, hang the engine on an engine hoist and disconnect the entire front end. I used to like those 365 GTC4s, But as you show the engine compartment and all the nonsense, I would NEVER like to own one. Even if I could afford one.

Moisture! Bummer

That is some awful, dreadful engineering. Post scriptum: now that I thought about it some more, I'm not sure that it could even be called engineering. I cannot imagine that a good, competent, conscientious engineer would ever design something so flawed and failure prone.