1974 Mercedes Benz 450sl Check Only 4 Injectors Working Cylinders 2 3 6 7

1974 MERCEDES BENZ 450SL
17,000 MILES
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ANONYMOUS
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what can I check ? only 4 of my injectors are working .cylinders 2,3,6,7 are not firing I checked the injectors and are not working on those cylinders.

I think its electrical?

coud you please help
Apr 8, 2013 at 6:56 PM
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FREEMBA
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  • 1,152 POSTS
remove a fuel line (one that is not working) from the injector, leaving it connected to the fuel distributor. run the lin into a plastic bottle. start the engine and observe how much fuel is sprayed into the bottle.
If not fuel is sprayed suspect the fuel distributor (it can be rebuilt, butit costs)
If plenty of fuel is sprayed, suspect a bad injector.

Repeat for the other non-working injectors.
Apr 8, 2013 at 7:16 PM
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