Fuel tank IMPLODE issue: which valve is stuck bad?

ever seen this kind of thing before?

 

um.... I got cel all the time, doesn't matter if I accelerate or decelerate.

If you design a machine to read whatever value, like horsepower, I would imagine that it could show a little decrease. But for a human, i can't notice any difference between this car and a healthy one, driveability wise.

the collapsed tank must be shaped from a long period of time before I acquire this car, I'd say more than a few thousand miles and the previous owner just chose to ignore both the CEL and the noise.

Remember my post about the smart CEL delete by covering inside the instrument panel with tissues? That's from this car. Unfortunately, in china , we don't have many laws for car sales fraud and the law enforcement here is next to nothing, except for aggravated violent crimes.

What is a "decal valve"? From my understanding, are you trying to say that the valve isn't faulty?

 

just fix any cel that comes up, that'll prevent all catastraphes like mine.

Owning these cars for all these years, little by little , I become to realize that ferrari engineering are just great, they give you all precautions before any big problem or danger. But people just ignore it

 

i see. the pcv valve is usually at the valve cover. both my 300zx and my lincoln town car has the pcv at the valve cover or intake mani.

My guess, Ferrari has it too, it just isn't called pcv valve , it is a pipe that connects both valve covers. When you use a 24mm or 15/16 inch wrench to remove the oil pressure sender, that pipe will get in the way, so I made this crooked wrench, see leftmost in the pic.

But how that hose works in lieu of 2x pcv valves is a mystery to me.

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this pipe probably serves as the PCV of the F131. I am not sure though

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yet another proof that these 2 valves are the same and serves the same fucntion

look at the US spec anti-evap diagram, those 2 valves merged into 1 line that goes to the charcoal canister

https://www.eurospares.co.uk/parts/ferrari/360-modena/engine/antievaporation-device-valid-for-usa-my-2000-2001-2002-2003-2004-and-cdn-my-2000-2001-2002-2003-2004-40649/179138

 

Now i have another problem that might be related to the deformed gas tank.
At gas station, the fuel nozzle just clicks back every 1 second or less.
I would think if the fuel tank is deformed in a way that block the fuel nozzle's pouring action, it would prematurely stops the gas nozzle. But upon a little more inspection, it isn't so deformed. I have replaced the system with known working on/off valve, known working 2x small purge valves, known working multi-functional valve and a known working charcoal canister and I blew pretty much all hoses/pipes of the anti-evap system and make sure they are not blocked.

Now I am puzzled again.

 

that's a good idea. So that is to make sure there's no more "huge vacuum" while driving , right? This won't solve the gas nozzle click back problem, i believe.

 

trying to remove the fuel pump, no avail. it was stuck !
and the pump's structure rod is broken. see the big concave inside. my gawd!
the top surface of the fuel tank is somewhat warped as well, as it is so difficult to put screws back to the top plate.

now. the fuel level indicator on dash obviously will always having 3 bars because it was stuck there.

I called it a day. I think i'll not replace the whole tank until the fuel pump leaks and breaks.

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the collapse's cul prit has been found, its the 2x small valves. the clicking gas nozzle is part of the problem of the deformed tank since it won't allow gas to pour in in a fluid manner.

 

pic of what?

 

thank you for the condolence. this one is actually not that bad. Actually it is pretty straightforwards. as all things are pretty mechanical, you can see it, reason it, etc.

What really sucked and still sucks, is that my CS's misfire that i've been chasing for more than 2 years now! I have to live with it!