injectors 73 Mercedes 450sl

My car has been running bad, when I unplug the injectors(electronic) there are a couple that dont change the idol, I guess this means they are pluged? If so how do I clean them?

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Suggest you do a Google search for "fuel injector service" shops in your area. These shops typically charge about $15 or $20 per injector for ultrasonic cleaning and calibration. Tell them what motor the injectors are from.
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Which 2? The injectors get their signal to fire from ECU via the trigger points in the base of the distributor. There are 4 sets of points. Each set goes to 2 injectors. Usually, oil goes up the dist shaft and takes out the points. Your cylinders are 1 to 4 down the pass side and 5 to 8 down the drivers side. The trigger points fire these cylinders at the same time: 1 + 5 2 + 7 3 + 6 4 + 8
If you are losing any pair listed, look at the trigger points. There are 2 different styles: with the lead and without the lead. Up to engine 016343 uses the set without a lead, Bosch number 1 230 090 009 From engine 016344 uses the set with the lead, Bosch number 1 230 090 013 They are not cheap...... they list for $530.00.......

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450sl wrote:

Two reasons that caused my SL to run crappy were: the trigger points on the dist or the throttle switch....the contacts in the TS get worn out and start giving the ECM the wrong info
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