Over the last couple of months I’ve had issues with the M129 rough running in my 250SE. The car was hesitating, idling poorly and just not running very well. I’ve done a few things over the last few months to improve this situation. One of the first things I did was change the injectors. The stutter when accelerating and hard starting when hot felt...
Today I changed the Distributor cap and rotor in my 1986 300SE. I bought the new cap and rotor about two years ago but only just got around to changing it. Unlike on the earlier engines, the M103 distributor cap is a fiddly job. Instead of sticking upwards, it comes out sideways as it attaches to the camshaft. I find that whenever I buy...
My 560SEC had a problem where it would emit a puff of smoke after idling. This was rather embarrassing taking off from the lights. It did give me the advantage of keeping people back who got too close. My assumption was that it was cause by old valve stem seals. As the seals get old, they get hard and allow a small amount of...
As outlined in a previous post, the 450SLC broke down a week and a half ago and the NRMA helped me diagnose it down to a bad coil. Yesterday, my new coil, cap and rotor arrived so I got down to getting fitting them t the car. A quick test of the new coil had the car roaring back to life, so I...
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