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Old 11-21-2019, 12:07 AM
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Diesel911 Diesel911 is offline
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Location: Long Beach,CA
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I agree with post #2 as the most frequent cause/s. Often when there is stuff in the Fuel Tank the you can see stuff in the plastic filter.

Change the Fuel Filters under the hood and if you still have the same issue. swap the positions of the fuel return hose (the fat cigar hose) with the fuel inlet hose where they come off of the fender well. And you need at leas 1/2 tank of fuel.

Doing the above will bypass the Fuel Tank Screen and draw fuel from a different spot on the Fuel Tank that has no screen.

Other less common possibilities are the Bell Crank (throttle support) on the Fire wall is coming apart and is keeping your linkages from moving correctly.

A plugged fuel tank vent can sometimes cause similar issues. If you remove the fuel fill cap and after a drive the problem goes away it is the tank vent is the issue.

In the picture that bell crank/throttle support is pulling out of the plastic ball that is behind the brass colored plate. Not shown but another point if failure is the rubber.
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‘85 300d Turbo Won’t Rev-throttle-support-fire-wall-pulling-out.jpg  
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Last edited by Diesel911; 11-21-2019 at 12:17 AM.
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