Re: Rough idle problems

Posted by Chuck McDonald On 2021/2/8 3:15:37

A couple of years ago my 37 120 had the same issue "Slightly rough idle" I drove the car to Ross Miller who adjusted the valves while the engine was running and he did find a couple out of adjustment. After the adjustment the cars engine was smooth as silk!. Ross did mention that the correct way to adjust the valves accurately was to have the car running. Most likely that will solve you problem.