1. Clogged Oil Passage: The oil passage that supplies oil to the right side rocker arm may be clogged with dirt, debris, or sealant. Check the oil passages in the cylinder head and the block to ensure they are clear.
2. Incorrect Installation of Oil Pump: The oil pump may not be installed correctly, which can lead to inadequate oil flow. Verify that the oil pump is properly seated in its place and that the oil pump pickup tube is positioned correctly in the oil pan.
3. Blocked Oil Gallery Plug: There might be a plug blocking the oil gallery passage that supplies oil to the right side rocker arm. Ensure that all oil gallery plugs are properly installed and not obstructing the flow of oil.
4. Lifter Bore Alignment: The lifter bores in the cylinder head may not be properly aligned with the oil passages in the block. Check to make sure that the lifters are seated correctly in their bores and that the oil passages line up.
5. Damaged Lifters or Pushrods: Worn or damaged lifters or pushrods can prevent oil from reaching the rocker arms. Check the condition of the lifters and pushrods and replace any that are faulty.
6. Priming Procedure: The engine priming procedure may not have been performed properly. Ensure you are using the correct oil pump priming tool or method as per the engine's specifications.
7. Oil Filter: Ensure you are using the correct oil filter for your engine and install it correctly. A clogged or improperly seated oil filter can restrict oil flow.
If you have checked and addressed all of these potential issues and still encounter problems with oil supply to the right side rocker arm, it's advisable to consult with an experienced mechanic or engine builder for further assistance and troubleshooting.
