Thread: Valve stem seals (om616/617)
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  #63  
Old 03-31-2023, 08:53 PM
Sugar Bear Sugar Bear is online now
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The firing order is 1 3 4 2.

When #1 is at TDC #4 is at TDC.

When #2 is at TDC #3 is at TDC.

#1 is at TDC compression stroke when the #1 camshaft lobes are on the flat part/base circle and the high points/lobes of the #1 camshaft lobes are completely opposite of opening.

At the same time both #4 camshaft lobes will be teetering on opening the valves.

Do #1 and #4 first and then rotate the crankshaft 180 to put #2 and #3 at TDC.

Good luck!!!
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