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Hi i got a problem with my -86 300e.
Its relativly easy started and runs great untill it gets to worktemp. If i press the throttle after a few minutes of riding it starts voilently shaking with full throttle/engine break/full throttle and so on...

Srry for my bad English :confused:
 

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1989 W124 260E
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First check all fuses Second you look for vacuum leaks Third clean all earth points and grease and replace.
Main reason for this 90% of the time it is electrical .So when was the ht part of the engine replaced like HT leads distributor cap and rotor along with spark plugs .All these will speed up your engine if in good condition .After your sure these items are 100% we move on to other items . Like remove your fuel pump relay and bridge pins 7 and 8 on the relay it self . Plug it back in and try again . This is only to test it and to see if its faulty . If it still cuts out remove the fpr take off the wire from 7 and 8 .This wire should never be left in place if you leave it in there fuel will keep going in to the injection system. Return after you do this .
 
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