No oil to 3,4 and 5 rocker arms

A general, non-powerplant specific, discussion on airboat technology, ie., hulls, rigging, polymer, etc..
LJMEDRANO
Southern Airboat Member
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Joined: Fri Aug 11, 2017 8:50 am

No oil to 3,4 and 5 rocker arms

Postby LJMEDRANO » Thu Aug 17, 2017 10:16 am

Any help is greatly appreciated! I had a lifter on the right side go bad so since I was replacing that one I decided to replace all while I was in there. Now on the left side I'm not getting oil to the rocker arms 3,4 and 5. I also have a clacking or tapping noise that wasn't there before. I have replaced the nuts also. What could be causing no oil flow to those 3 and the noise I'm now hearing? I have changed the oil and filter also.
What oil is suggested to run in a sbc bored 0.060 over?
Could an exhaust leak cause this?
Could it simply be the oil filter?
Could it be the rocker arms itself on those 3?

ladyblackwater
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Re: No oil to 3,4 and 5 rocker arms

Postby ladyblackwater » Thu Aug 17, 2017 10:32 am

Did you check to make sure the holes in the push rods had no obstructions? It could also be that one of the plugs came out that's behind the timing chain cover next to the cam. This will allow oil to bypass and won't have enough pressure to push oil through the push rods. I've seen this happen many of times. This is why they should be taped and put in a pipe plug instead of a freeze plug style. I'm not saying that's definitely it but it sure something to check out. What makes me think this is the problem is because it's only doing in on one side of the motor. I'm pretty sure other people might have some good ideas for you to check also.
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diamondback0320
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Re: No oil to 3,4 and 5 rocker arms

Postby diamondback0320 » Thu Aug 17, 2017 12:09 pm

Is the valve lash set correct on those 3 cylinders..just a thought

diamondback0320
Southern Airboat Member
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Joined: Thu Aug 20, 2009 3:09 pm
Location: palm bay,fl

Re: No oil to 3,4 and 5 rocker arms

Postby diamondback0320 » Thu Aug 17, 2017 12:10 pm

Unless you got a bad set of lifters


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