Hello again my friends. Just a quick question for you all tonight. More than once i have had an issue using the eeld smoke machine to test a GM product using pressure as opposed to vacuum. Today a GMC Sonoma had Lyle and I scratching our heads. It came in with a small leak code so we gave it the full evap test. What we found was no leakage at all. However, we could not see the release of pressure by opening the vent. After multiple times of putting our own tube to our mouth and the vent, it became apparent that the vent worked fine but would stick closed if it was shut under pressure. If closed while sucking (yes with my mouth), it worked fine. Has anyone else noticed this? How do you guys test this system using the eeld type "pressure tester" like we have? Is this just a weak solenoid or is this a noted issue with GMs (and perhaps others) with these kinds of testers?
Neil
Neil
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