fuel pressure regulator vacuum diagram..

[jaimster]

Originally Posted by blue62

Testing Evap Purge Valve for vacuum leak:

Disconnect the hose from the intake to the valve. (at the valve).
Disconnect the Electrical connection.
Apply vacuum of 0.7 bar to the valve.
Vacuum should not fall below 0.5 bar after 10 minutes.
That will tell you if it holds vacuum correctly or not.

Great ! thanks for explaining that to me Blue62.

now I have to determine which wires on the MAF connectors are what ?? voltage , ground , signal and so on .. thought I was looking at bad MAF sensor dud...lol

got some homework to do on that is almost 6pm here in dfw tx I do still want to DO a SMOKE TEST tonight just for my own curiosity ..i will be looking at all possibilities.

intake ( under there have a borescope camera I can use to look underneath ) exhaust . oil tube .
oil cap , gas cap /..

thanks again to All.

update : got another smoke test done with cold engine - looked all over the car exhaust AOS which maybe leaking at the very botton connection NO SMOKE at all

however FOUND the oil dipstick tube leaking right under transition in between the trunk ( hard to get to ) .. NOT sure how I missed it a while back maybe cause I did it with a hot engine

I m going to try to fix it tomorrow wrapp special insulation tape around it and glue /adhesive all over area - it has worked on some other hoses i have done well SEE ..i will do a smoke test the next day ..