friend of mine bought a "restored" one that ran low oil pressure and had a slight rumble in it, after checking eevry thing he could think of he finally tore it down to find the crank oil passages were caked up so badly no oil was reaching the front crank bearing which is a roller bearing if I remember right he cleaned/blew out the crank passages and she carries perfect pressure now, he also replaced the front brg, not sure if this is your problem but some thing to keep in mind cnt
Re: MM oil pressure in reply to Case Nutty 1660, 12-04-2012 17:52:27
With all that I have done so far I think you are on to something. When I put new oil in and then had to drain it out there was a lot of black stuff came out when I pulled the plug indicating to me that there is a lot of slug in the crankcase.
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