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Re: bomb replacement
If the bomb is bad, you'll only get a few pedal pushes with the engine off
before the pedal goes hard. You should get at least 20 with a good bomb.
If it flunks that test, replace the bomb, then check your other symptoms.
BTW, I don't see how a bad bomb can allow the pedal to descend to the
floor. The bomb is assisting boost only, which is why the pedal becomes
very hard in the test I describe. At that point, the pedal feel is what
you should get even if the bomb is failing with the engine running.
>does anyone know a reliable method of determining if a brake pedal that
>gradually descends to the floor indicates a bad master cylinder or a
>bomb that has lost its nitrogen charge? I would also like to know if
>anyone out there knows the cheapest source of replacement bombs, I'm
>sure they are available rebuilt somewhere. I hate to spend $400 at the
>San Ramon, CA
San Jose, California
'87 560 SL