1998 Ford Escort Excessive vacuum in engine?

1998 FORD ESCORT
102,000 MILES • 4 CYL • FWD • MANUAL
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CWRANDOLPH
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My ZX2 runs fine (2.0L DOHC Zetec) but I noticed that there is a groaning noise at the front of the engine. When I remove the dipstick while it's running, there is a loud inrush of air and the groaning noise stops. I know that there is supposed to be a vacuum in the crankcase but this seems excessive. Is there a valve or something that's supposed to control the vacuum that is plugged of something? Thanks for any help
May 16, 2008 at 8:58 AM
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RODRIGUZZI
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The problem is right on the intake manifold. There is this one hose right on top of the intake manifold or on top on a 2.0 split port engine. that goes from the intake manifold to the pcv valve, where the hose connects to the intake manifold that is your problem. I am not sure what is called because I never had to order the part, I got from another engine. This was driving me crazy but I finally found it.
Jun 18, 2008 at 12:05 AM