Human genetics: Pleiotropic mutations. Hannah Stower. A large-scale analysis of SNPs and genes that are reported to be associated with common complex diseases and traits has found abundant pleiotropy: that is, each individual gene mutation may have a role in multiple diseases. large-scale analysis of SNPs and genes that are reported to be associated with common complex diseases and traits has found abundant pleiotropy: that is, each individual gene mutation may have a role in multiple diseases.
EVAP Vent Valve. The evaporative canister vent valve not only allows the fresh outside air to the EVAP canister during the purge modes, but also allows the diagnostic to pull a vacuum on the fuel tank by closing the vent valve. This valve is normally open. EVAP Canister.
The EVAP system consists of a charcoal-filled canister and the lines connecting the canister to the fuel tank, ported vacuum and intake manifold vacuum.he canister contains charcoal granules which adsorb gasoline vapor and store them temporarily until the engine intake manifold vacuum draws them off. A malfunction of the EVAP system is unlikely to cause the high fuel consumption you report. However, it may be a useful clue pointing to a fuel leak.