1991 sl300

[AMoore]

Hoping for some help identifying the problem: enthusiastic driver but zero ability when it comes to maintenance! Mechanic suggesting change of spark plugs and leads. Experiencing vibration beneath driver's seat when idling at roundabout, traffic lights etc. Something is affecting the transmission and the fuel pump is fairly constantly heard (even when operating the door lock mechanism). Making me think this may be something more than a change of sparks.

 

[dpw864]

Although unfortunately I can't help. This too is why I joined up. Love my car, try my best but I just can't do the nitty gritty! Welcome! Hope you get it sorted.