Quote:
Originally Posted by Eddie25
. Can you tap into the PCV valve line? I have no other lines to easily tap in to..
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Tapping into the PCV valve hose would not work very well. Generally speaking a vacuum metering instrument be it a vacuum gauge or MAP sensor ideally you would want its own port. If that is not possible You want it to be on a line that does not have any actual flow. A good source for this would be the fuel pressure regulator vacuum line (if on a fuel injected vehicle ) or the vacuum line leading to the solenoid for the EGR
Look at mediately behind the throttle body about you should see a couple vacuum lines regardless of vehicle manufacturer approximately a quarter of an inch in diameter