So if i just ditch the evap canister and extend out the hard line with soft hose with a fuel filter on it is there any damger since there will be gas fumes under the hood?

 

Not a good idea. Any little spark could result in an explosion.

 

get a vented gas cap and cap the metal line.

 

I tried to find a vented gas cap years back. Got a part #???

 

I've visited the Stant website, and they show a vented cap. However, when you get down into the description, they describe venting as "slowly releasing the pressure as you remove the cap". I think they used vented caps up until the early 70's, but after that I'm not sure. Not even sure if it is legal to make or sell one on an emissions vehicle.

Just another thought for you to consider. The TPI tanks run under pressure- 2 psi. This pressure I believe makes it easier for the pump to operate, as the fuel is being "Pushed" into the pump. This 2psi is accomplished by the check valve just before the canister. Once 2 psi is reached, the valve will open allowing fumes to be collected by the canister. When the ECM sees that it is OK to re-use those fumes, it opens the purge valve and a vacuum is applied to the charcoal, causing it to release the gas fumes, which are then burned as part of the combustion. Why waste it?

My purge line got pinched, and was totally blocked off. I had several occurrences where fuel would "puke" out of the filler neck, even with a good cap. When I went to open the filler, at least 1/2 gallon of gas would puke out. Pressure in the tank had to be approaching 10-15 ps1- maybe more. Enough to make me concerned about splitting a seam.