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 like a symptom of poor injectors. I also didn’t want the situation of a leaky injector washing down my cylinder walls. While not as cheap as the K Jet injectors, the MFI injectors are still available […]
