How Often to Change N20 Spark Plugs? Most turbo BMW engines have a knack of burning through spark plugs. Spark plug life is already fairly low, and tuning/modding the BMW N20 can kill spark plugs even faster. We recommend the following N20 spark plug replacement intervals: Stock: 40,000 to 60,000 miles; Modded: 15,000 to 25,000 miles
The average cost for a BMW 320i spark plug replacement is between $213 and $338. Labor costs are estimated between $143 and $180 while parts are priced between $70 and $157.
This was fun. I thought my car was done with that rough idle! Thank god for that diagnostic tool!Not sure which ignition coil to get? Check out realoem.com a Carefully tighten the spark plug by hand, being careful not to cross-thread. Torque the spark plug to 21 ft-lb. Replace the ignition coil. Reconnect the ignition coil electrical connector. Repeat steps 2 and 3 for the remaining spark plugs. step 4 :Putting the Engine Compartment Back Together. Talent. Tools: Set of sockets, 12 point spark plug socket, 5/8-inch thin-wall spark plug socket, flathead screwdriver, torque wrench. Parts Required: Spark plugs, Ignitions coils. Performance Gain: Engine runs well. Complementary Modification: Change air filter at same time.
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