Question about 1998 Volvo V70
Well the first thing is to make sure your gas cap is on and tight,next is to check the evap lines for breaks, a large leak would mean a big crack in a line or line off, also the vent valve may not be closing to seal system or the purge valve not operating these car are a little hard to find evap leak without a smoke machine and to test these valve you would need a scan tool or try to power them up to test them but you need to know which terminal is power and ground or you will damage the valve,check the lines in the engine compartment at the rear of raditator for breaks, then you can follow them to tank and check there, the vent valve is inside the driverside wheel well, that hose breaks often, check that also,hope this is helpful.
Posted on May 12, 2010
EVAP is an emissions filtering and re distribution device taht removes hyrdocarbons and sends them back into the manifold system where they are burnt instead of emmitting them into the atmosphere. usually the EVAP filtering module is a replacable part located underneath the car near the fuel tank and looks like a black box. They are not repairable, only replacable, and the norm is to have a professional do the task since it is connected to the cars computer system and codes may need to be erased from the computer once the repair is made. Hope this helps.
Posted on May 12, 2010
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Posted on Jan 02, 2017
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