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1989 300SE
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35 Posts
Discussion Starter #1
Car has been running perfect and has always had tons of power from a dead stand still and now all of a sudden it is really slow and sluggish from a start? Change fuel filter again or what? Any suggestions?[?]
 

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90 300 SE ,85 300 GD
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1,574 Posts
Slow Engine

This can be the first signs of an injector pump going out. How many miles on the engine?
 

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300TD,C32AMG
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45 Posts
Have you...

checked the line that sends boost pressure to the injection pump?.Sometimes it will pop off or get plugged.
It's the small clear plastic hose that attaches at the rear of the intake manifold,then goes to the firewall (switchover valve?) and from there to the injection pump.Mine popped off once going over the Siskiyou summit on I-5,and the power sagged big-time.
If you've been changing fuel filters regularly,your
injection pump should be fine.It will normally last as long as the engine.I would still change all three fuel filters if its been a while.....
 
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