Timing Marks and What They’re For

Most engines will have two or three marks on the inner crankshaft pulley to be lined up with the “arrow” mark on the engine block. Similar marks will usually be found on at least one of the camshaft pulleys. When the timing belt or chain is properly installed, the mark set to the block mark on the crankshaft will be identical to the mark set to the camshaft and head. The goal of setting timing is to have this lineup happen.

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