I'll pull the valve covers again and check but the marks were really close - maybe 2 degrees on the crank. I will also do a compression test to check the valves but she idles fine and the vacuum needle is rock solid, no wobble to indicate a burnt valve
yes the MAP vacuum changes, injector firing changes with MAP change. I considered re mapping the VE table for the new base vacuum and see what happens but didnt as I need to sort out why the vacuum changed. also the TPS is reading fine and the temp sensors for air and water are working fine.
I had just been doing 60 - 70 along a flat piece of highway - slowed to around 30 with a traffic constriction at the bottom of a long steep climb (Peasley canyon rd for those near seattle) the traffic cleared and I accelerated - the car surged ahead and then just dies slowly leaving me in the hammer lane doing 30. I got over to the hard shoulder (of course no one shouted - hooted or gave me the finger
) and pulled off at the next off ramp. couldnt spot anything wrong but my AF gauge was showing I was running really rich. drove home slowly and so long as i dont floor the car its fine. The only thing I can see wrong is the vacuum has dropped from 17 to 13 at idle.
cheers
Barri