#6 Symptoms of a bad purge valve #signs of a bad purge valve #bad purge valve diagnostics #bad purge valve replacement #purge valve location #car problems #car issues #issues with bad purge valve #purge valve problems #check engine light is on #rough idle #car won't start #poor engine performance #hard start after putting fuel #car failed emissions test #poor gas mileage #P0441 #P0442 #P0443 #P0444 #P0445 #P0446 #Check engine codes #low gas mileage #hard start after filling gas tank