Quote:
Originally Posted by alfa 75
Probably a dumb question but hell, I'm new to these cars-- what's the line going into the airbox?
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got a picture of that line?
what i'd look at, in terms of vacuum:
check and see if the modulator is holding vacuum--a new o-ring is probably helpful--just pop off the modulator cap and replace, if needed.
i like to check the vacuum right at the transmission's modulator by putting a three-way connector with long vacuum line attached to gauge, then check while parked and look at the profile while revving--should drop at higher rpms--opinions on profiles vary but something like 10" vacuum at idle down to zero at full throttle with a more-or-less linear drop with respect to rpm. (you can also T into the line in the engine compartment, obviously; should be the black line.)
maybe that helps? at least for starters...