[DeTomaso] vent line weirdness

[John Hansen]

I did this once before on a 1979 Toyota 4WD truck, I thought I was so smart 
taking off the smog control to get that extra little bit of power. Its only a 
matter of time before it seems to run out of gas.


On Mon, 21 Apr 2008 16:30:40 EDT
  MikeLDrew at aol.com wrote:
> 
> In a message dated 4/21/08 9 39 37, chrisvkimball at msn.com writes:
>> 
>> I checked the vent hose which I had run to the air filter, and it was clear 
>> all the way almost to the tank.  At that point, it was plugged.
>> 
>> I used a bicycle pump hooked to the hose to force air through it (with the 
>> gas cap removed, of course) and that freed it up so it was working correctly 
>> again.
>> 
>> The only thing I can figure is the little rollover-protection valve I 
>> installed in the line must have failed.  It was installed to allow air to go 
>>into 
>> the tank, but in the event of a rollover stop fuel from flowing out.  I know 
>> it is installed correctly and in the correct direction.  I haven't had a 
>> chance yet to remove and inspect it.
>> 
>> Has anyone heard of those little rollover-protection valves failing in this 
>> way?
>> 
> 
>>>>No, just rollover-protection valve installers.   :>)
> 
> This is another example (following the exhaust fans on the engine screen 
> setup which still makes me crazy) of attempting to be clever and getting TOO 
> clever.
> 
> Chris. You hooked up the vent hose (which is supposed to just vent) to the 
> air cleaner which SUCKS!!!!!!   So, you step on the gas, the engine sucks 
>air, 
> creates a vacuum in the line that has a check valve in it, and sucks it 
>closed. 
>  Now you are sucking on the tank from two places--the fuel pump, and the 
> 'vent' which isn't.   You're lucky you didn't do more damage.
> 
> Just vent the fuel tank to the ground, and consider yourself extremely 
> fortunate that the tank is so strong due to its irregular shape. 
> 
> And, two thumbs up for DRIVING the car in conditions that would keep many 
> other Panteras locked away in the garage. :>)
> 
> Mike
> 
> 
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