Re: spider gas vapors

[GModelle@domain.elided]

Nsaldana21 writes about gas vapors noticeable from the cockpit of his spider.

The problem you are experiencing seems common to spiders that are equipped 
with the vapor recovery system that you described in your digest post. The 
trunk-mounted black plastic tank is a vapor condensor that collects gas 
vapors from the fuel tank and controls their emission into the atmosphere. 
Your system is broken. There are several places that gasoline vapors may be 
getting airborne, one of the most suspect is the plastic one-way valve that 
is positioned next to the vapor tank, heading towards the engine. This valve 
allows fresh air to resolve negative pressure (vacuum) in the fuel tank, but 
prevents fuel vapors escaping from the circuit. Check all the plumbing 
connections in this area. The vapors that are created, positive fuel tank 
pressures resulting from fuel heating and expanding are handled by this 
system to avoid atmospheric pollution and unpleasant odors. Maybe check the 
rubber fill boot, as errant fuel that drips from the fill-up nozzle may find 
their way into your trunk if the seal around the filler tube has been 
compromised. The thin tube that carries the excess fuel vapors to the 
crankcase ventilation hose is metal as it passes over the intake manifold's 
water jacket. These two merging vapor recovery systems are analogous, they 
capture vapors, condense them and distribute the liquids back to where they 
originate (fuel tank, crankcase) The volatiles are ducted to the intake tract 
where they are entered into the combustion mix and burned. The black canister 
that receives the crankcase (blowby) gasses is the oil vapor separator. 
Liquid oil from this source is shunted back to the crankcase through the 
dipstick pipe. Maintain this system as it is good for the environment and it 
is more pleasant to smell the roadside blooms than the 94 octane. 

Modelle in Somers Point
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