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Question

Can a Evap line be blue . If it has blue in it, is it still considered to be a Evap line

My test I did just out of curiosity has come back with a faint blue line. If it is blue in the slightest, is it considered a positive. I have two lines on mine and I've not had two lines other than water clear Evan lines for last 8yrs. But tests after this one on Friday are all blank with no Evap line showing not even faint ones.. .. Can some one help me ..

3 Answers • 7 years ago


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yes blue dye tests have blue evaps

7 years ago


Ok thanks so y does the rest of the same tests show up clear and this one is blue and it's the same brand then. Pic in gallery on my profile . Confused still.

7 years ago • Post starter


It has to do with the chemical reaction of the dye and the longer the test sits the more likely they are. Also the thinner evaps tend to have more color to them again because of the pooling dye. You should really read them within 10 minutes and destroy them after. They can really cause a lot of heartache.

7 years ago


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