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I want to thank everyone for their input. The vacumn tube on the manifold was partially blocked. A straight coat hanger wire cleared it. The ventallation box was plugged up. Because my work area is outside and it has been below 30 degrees, I was concerned about pulling the box out without dislodging the hose to the sump. I read in the archeives of one person running gunk down through the fire trap and someone else used carberator cleaner. I didn't feel good about either of those options. So what saved the day was Mystery Oil. Found it a an Ace Hardware store. I removed the Fire trap and Y body to expose the box. I used a 6" syringe (with 1 11/2" bore, found at Kmart automotive area)that was long enough to get down to the box. I started slowly injecting the oil and as the box started to accept it increased the flow. I used half the can. Ran the car 50 miles and checked the vacumn at the oil cap. Completely loose it sat perfectly still. I tried to lift it off and it howled like a vacumn cleaner! I didn't loose suction till I was 1" away from the cover. The Marvel Mystery Oil advertizes as a gas additive and a crankcase additive. Today I will drain the oil, change the filter and put in Mobil 1. Thanks again for you input.
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