Mercedes R107 Poor Fuel Injection
Symptoms
High revving, uneven tick over, low revving, rough running, flat spots, misfire popping from exhaust.
Diagnosis
If your car displays any of the above problems and you have eliminated the possibility of an electrical issue (spark / distributor cap / HT leads) then it’s very likely that your fuel system requires attention.
The Cure
Tuning and/or replacement of injection system components