Ford E150 Emissions

84 Econoline 150 with 130K miles bought new by a friend of mine.

Under Visual Inspection PCV and Thermostatic Air Cleaner are listed as Disconnected, Fuel Cap Functional is listed as Fail, as is Ignition Timing.

For measured results Everything is (mostly) ok except for the NO, which is 2x the max.

From the notes it looked like the tech wrote "Engine Idle Speed High".

I was able to look very briefly at the vehicle at night yesterday, and noted the pan that clamps down the air filter was missing, as was the (?)fresh air hose and the pre-heater hose. Likewise the PCV hose. They all appear to have eroded. For the failed NO I am thinking it is more likely the EGR than anything? That would seem likely to correlate to the Idle being off? I've never worked on a ford van before.

Thanks, Andrew

@15MPH RPM = 1409, %CO2=11.7, %02=4.4, HC Max=129 Meas=67, CO Max=0.84 Meas=0.01, NO Max=1076 GP=2038 Meas=2553

@25MPH RPM = 1159, %CO2=11.4, %O2=4.7, HC Max=101 Meas=69, CO Max=1.06 Meas=0.01, NO Max=1103 GP=2075 Meas=2209