Originally Posted by martyfa
I replaced my stock pump at around 30,000 with a Johnson and now at 48,000 it's going out. Should I be looking for some other issue that would cause it to fail so soon?
Much appreciated
there have been reports of some members on mbworld with cm30 failures. no definite reason as to why the pumps failed (maybe a bad batch?) it would appear either the newer bosch pump or the cm30 will perform the same and its still way cheaper to diy the project than let a dealer fix it