Hello

I have a 1987 300E, how often should the spark plug wires be replaced?

I have a slight miss that is really noticable at idle. I replaced the spark plugs and cap and rotor, the fuel injectors and seals were replaced about a year ago. What else should I check?

I purchased the car in 2001 with 130,000 miles , I put about 70,000 miles since that time. The car just passed the 200,000 mile mark. In the time that I have owned the car the wires have not been replaced. Not sure when the previous owner changed them.

A set of bosch wires is close to $100, I'd rather not through the $ at it unless I knew they needed to be replaced.

Thanks