Having problems with your 2000 Ford Expedition ?

Fault code p1450 inability of evaporative emmisins control system to bleed fuel tank what could this mean?

Posted / edited by AnonymousUser on : 12-11-2018

Answers :

The purge valve is supposed to keep sucking vapor from the gas tank, through the charcoal canister, and it never works right.
A loose gas cap can not only cause it to flash a problem, but will also cause too lean of a mixture and harm the engine.
The purge valve system is prone to way too many leaks, and the consequence of not letting enough vent air into the gas tank, can be a collapsed tank or a blown fuel pump.
It is not worth the risk.
The easiest thing to do is vent the tank to the open air after the charcoal canister, as all boats, lawn mowers, etc., are, and all cars used to be. But then also plug the line going to the air intake, because otherwise it will be a leak and cause too lean of a mixture.
The purge valve is another bad idea that eventually is bound to have catastrophic results. Too many car engineers forget cars spend a decades in freezing cold, blistering heat, torrential rain, vibrations, etc.
The fuel system is suppose to have a slight vacuum to it when the engine is running. You have a loose fuelcap or hole in a vent line. Try tightening the fuelcap or replace the fuelcap.
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\012If this does not help you need a testing machine called a "smoker". Some garages have it and it is the only way to find a small line leak. When the mechanic finds the leak he will need to replace the vent line or he may be able to wrap and seal it.
Repair Help & Product Troubleshooting for 2000 Ford Expedition

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