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Take the "vacuum" line off the fitting in the intake manifold. The fitting just unscrews. Clean it out very well and reinstall. If there is oil in the vacuum line either replace or clean out. Trace the line over to the the switchover and clean that out as well.
By disabling the EGR, cleaning out the manifold and crossover, and using Mobil 1 you can reduce the likelihood of the fitting clogging up again.
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1987 300TD 231,000
#22, afterglow, plastic fan, euro lights, alternator upgrade, cluster housing update
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