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Old 06-14-2019, 02:29 PM   #6
Nomad Willy
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City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
I would think blowing back w air may unblock the plugged passage.
Also if the engine is like Buick straight eights the rocker arm shaft is hollow and serves as an oil line.
I’d disassemble everything on the top end before thinking of pulling the engine.
Then if it were mine I’d run some SeaFoam in the lube oil for a few (1 to 3 hrs) time (while lubing manually) and then change oil right after. Then perhaps run a small amount of SeaFoam to up your detergency of your oil. Or change to a higher detergent oil.
And because of upper end parts wear running w/o oil at least adjust the valves after full oil flow has been restored.
Have you been running non-detergent oil?
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North Western Washington State USA
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