Ok, after calls to half a dozen smog places and getting turned down, with excuses from pre 90’ cars are too tough to get an accurate rpm reading, to people knowing these vans or rather how to access the motor and denying it out right I found someone local.
Took my van in today, and getting everything dialed in went through the test, passed the sniffer, rolling test, got to evap test and failed. Tech explained it was losing pressure somewhere between filler neck of gas tank and pipe to charcoal canister.
Looked (searched, but no success) in forum any ideas what is causing van to fail? Tech says it is either leak at filler neck, somewhere on tank or the rubber hose from tank to charcoal canister.
thanks