3.0 noise at idle

[cobra 3.0]

My 1986 3.0 OMC Cobra makes an intermittant clattering, loose bearing kind of noise at idle. Sounds like it's coming from the power steering pump ...or maybe the main water pump(they a relatively close together) My guess is it's my power steering pump. Water pumps usually squeel when their in need of replacement.<br /><br />The noise goes away when I accelerate and drive. At first I though something was loose, but I don't see anything loose.<br /><br />If it's my power steering pump, should I change it? It seems to work fine. What are the risks of just waiting...Can it jam and fry my belts? Or will I just loose power on the power steering...which is no biggy cause it can easily steer without it (16 ft bowrider).

 

[achris]

Re: 3.0 noise at idle

Cobra,<br /><br />The steering pump is just a constant displacement hydraulic pump, so if that is the problem then yes, it could sieze.<br /><br />Have you taken the belt off and run the engine, just at idle, to verify the pump?<br /><br />Chris.........

 

[DustyJacket]

Re: 3.0 noise at idle

Is it a rapid ticking noise? about 8 times a second?

 

[cobra 3.0]

Re: 3.0 noise at idle

No. I will take off the belt and try it.<br /><br />Yeah...kind of a ticking noise.<br /><br />If it's gone, can I get the pump from an auto store? Probably any GM car steering pump would do?

 

[elpaso]

Re: 3.0 noise at idle

Auto or marine pumps are the same.<br />But - if it needs replaced -take old pump with you, and match up<br />the hose connections on back of pump.<br /><br />There are many variations. Some times you have to use your<br />old case and install new innards

 

[achris]

Re: 3.0 noise at idle

And they are direction sensitive. Make a note of the direction of rotation so they supply you the right one.<br /><br />Chris.............

 

[cobra 3.0]

Re: 3.0 noise at idle

Thank you.