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Fuel Injector Replacement Interval

Engine

Vehicle Information: Year: 1982; Body Type: Coupe;

Hello - I have a 1982 911 SC with 68,000 miles. I am taking my car in for an oil change, tune up, and valve adjustment. It has been about 15,000 miles since tune up, 10,000 miles since valve adjustment and is time for another oil change. I was thinking of replacing all of the original fuel injectors too. Is there a mileage interval that the fuel injectors need to be replaced? Do these need to be replaced or can they be cleaned and re-used? Just wanted to take care of my car; however, don't want to waste money. Here is a copy of the work order quote: __________________________________________________ ________________Job01 Oil Service Labor: 0.8 hrs@$84.89/hr=$67.91 __________________________________________________ ________________72116 Oil filter 1.0 @ 16.28 =$ 16.2820W50 20w50 motor oil 10.0 @ 3.79 =$ 37.90__________________________________________________ ________________Change oil and filterLubricate chassis where applicableCheck all vehicle fluids quantity and quality Inspect windshield wiper operation Check all lighting operation Test tire pressure and adjust __________________________________________________ ________________Job02 Tune engine Labor: 1.8 hrs@$84.89/hr=$152.80 __________________________________________________ ________________SP415 Spark plug RN9YC 6.0 @ 3.47 =$ 20.8203008 Distributor cap 1.0 @ 18.21 =$ 18.2104017 rotor 1.0 @ 9.10 =$ 9.1018502 Air Filter 1.0 @ 34.06 =$ 34.06__________________________________________________ ________________Replace spark plugs, dist cap and rotor. Set timing and adj fuel mixture. __________________________________________________ ________________Job03 Valve Adjust Labor: 3.5 hrs@$84.89/hr=$297.11 __________________________________________________ ________________19404 Valve cover gasket,U 2.0 @ 17.26 =$ 34.5219501 Valve cover gasket,L 2.0 @ 10.28 =$ 20.56__________________________________________________ ________________Adj valves. Factory recomended interval is 15,000 miles. Time will be adjusted accordingly if done with Tune UP __________________________________________________ ________________Job04 Injectors Labor: 2.5 hrs@$84.89/hr=$212.23 __________________________________________________ ________________502004 Fuel Injector 6.0 @ 83.07 =$ 498.42__________________________________________________ ________________Replace injectors. Time will be adjusted accordingly if done with Tune UP __________________________________________________ ________________Job05 Front Brakes Labor: 2.8 hrs@$84.89/hr=$237.69 __________________________________________________ ________________5006 Pads, Front 1.0 @ 63.17 =$ 63.1796501 Sensor 2.0 @ 23.75 =$ 47.5010700 Rotor, Front 2.0 @ 115.80 =$ 231.605641 Seal, frt hub 2.0 @ 12.40 =$ 24.80__________________________________________________ ________________Replace front pads and rotors. Clean and pack front wheel bearings. __________________________________________________ ________________Estimate Cost Summary__________________________________________________ ________________Tax: $134.18 Estimate Total: $2,198.86 Thanks for your help!

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