Skylark L4-138 2.3L DOHC VIN D MFI (1988)
1. Engine front cover. Refer to "Engine Front Cover" in Section 6A7 of the Service Manual.
2. Check for presence of 4 mm hole in center of timing chain idler sprocket. If hole is not present, proceed with replacement of sprocket and bearing
assembly.
3. Timing chain housing. Refer to "Timing Chain Housing" in Section 6A7 of the Service Manual.
4. Timing chain idler sprocket and bearing. Refer to "Timing Chain Idler Sprocket and Bearing" in Section 6A7 of the Service Manual.
Important:
Any time the timing chain idler sprocket is pressed out of the bearing, the bearing must be replaced. The bearing is damaged during the pressing
operation.
Inspect
Coolant pump for damage to splines on coolant pump drive shaft. If coolant pump or drive shaft is damaged, replace pump. Refer to "Coolant Pump"
replacement procedure in Section 6B of the Service Manual.
Clean
All gasket mating surfaces.
Install or Connect
1. Coolant pump, if it was replaced due to shaft spline damage. Refer to "Coolant Pump" in Section 6B of the Service Manual.
2. Timing chain idler sprocket and bearing. Refer to "Timing Chain Idler Sprocket and Bearing" in Section 6A7 of the Service Manual.
3. Timing chain housing. Refer to "Timing Chain Housing" in Section 6A7 of the Service Manual.
4. Fill coolant, as necessary.
5. Check oil level and fill as necessary.
6. Start engine and check for leaks.
Parts Information
Warranty Information
