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Old 06-07-2002, 07:34 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,123
Clean the line from the intake manifold to the ALDA on top of the injection pump.

Temporarily bypass the overboost switch. Sometimes the boost sensor sticks.

Check that the air recirculation thing under the EGR valve isn't stuck open. A quick check is to plug the line to the recirculation valve. That doesn't help if the valve is physically stuck open, though.

91 300SE
87 300SDL
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