Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Timing Chain Timed Position
7. Set camshaft sprockets at timed position and install timing chain.
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Remove the alignment dowel pin from the intake camshaft. Using J 39379 or equivalent, rotate the intake camshaft sprocket counter
clockwise enough to slide the timing chain over the intake camshaft sprocket. Release the camshaft sprocket wrench J 39579 or equivalent.
The length of chain between the two camshaft sprockets will tighten. If properly timed the intake cam alignment dowel pin should slide in easily. If
the dowel pin does not fully index, the camshaft(s) are not timed correctly and the procedure must be repeated.
8. Leave the alignment dowel pin(s) installed.
9. Raise the vehicle.
10. With slack removed from chain between intake cam sprocket and crankshaft sprocket, the timing marks on the crankshaft and the cylinder block
should be aligned. If the marks are not aligned, move the chain one tooth forward or rearward, remove slack and recheck marks.
