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Ask Daryl Your Own Question
Daryl, Shop Owner, Certified Mechanic
Category: Car
Satisfied Customers: 12549
Experience:  28 years experience, Master Mechanic
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Timing marks 3.4 DOHC Oldsmobile

Resolved Question:

timing marks 3.4 DOHC Oldsmobile
Submitted: 6 years ago.
Category: Car
Expert:  Daryl replied 6 years ago.

HiCustomer Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:

-What year is your Car?
-What make and model is your Car?

-What exactly are you looking for?
Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.

Customer: replied 6 years ago.
olds cutiass supreme 1995 timing on gears on cam belt 3.4 d.o.h.c
Customer: replied 6 years ago.
olds cutiass supreme 1995 timing on gears on cam belt 3.4 d.o.h.c

Expert:  Daryl replied 6 years ago.

Pic below,



Customer: replied 6 years ago.
what if marks are not on gears how do you time cams
Expert:  Daryl replied 6 years ago.
If there are no painted marks the hold downs in the pics set the timing, the cam gears all need to be loosened.
Customer: replied 6 years ago.
is marks be hind nut and washer that hold the gearson
Expert:  Daryl replied 6 years ago.
No the cam hold downs hold the cams where they need to be for the timing, then the cam gears are loosened so the belt will go on correctly with the other gears, there are no permanent marks on the cam gears.
Customer: replied 6 years ago.
does flats on back of cam need to be turn up to do this
Expert:  Daryl replied 6 years ago.

Below is the installation procedure,


1. Install camshaft sprockets with bolts and locks. Tighten bolts finger tight. Install timing belt

onto camshaft sprockets in a counterclockwise direction. Continue installing timing belt,

making sure timing belt teeth are fully engaged with all sprockets.

2. Install timing belt tensioner pulley. Tighten timing belt tensioner pulley bolt to 37 ft. lbs. (50


3. Install rubber end plug in rear of tensioner assembly until flush. Ensure plug is sealed against


4. Install actuator bushing into side plate. Install timing belt actuator and actuator side plate.

Tighten side plate bolt to 20 ft. lbs. (27 N.m).

5. Rotate pulley assembly into timing belt a maximum of 11 ft. lbs. (15 N.m) to allow

engagement of actuator shaft into pulley pocket arm socket. Pull the paper clip from the

actuator. Retighten pulley assembly 11 ft. lbs. (15 N.m) counterclockwise to seat pulley into


6. Tighten both right hand camshaft sprockets (bank closest to firewall) to 96 ft. lbs. (130 N.m).

Remove camshaft hold-down from righthand camshaft carrier.

7. Rotate crankshaft one full turn (360 degrees) clockwise, as viewed from front of engine. Align

crankshaft reference marks. See Fig. 3 . Make sure both righthand camshaft flat spots are

down. Tighten both lefthand camshaft sprockets (bank closest to radiator) to 96 ft. lbs. (130

N.m). Remove camshaft hold-down from lefthand camshaft carrier.

8. Rotate engine clockwise (as viewed from front) 2 times to seat belt and verify correct valve

timing. DO NOT reverse rotation. Make sure both camshaft flat spots are up on one bank and

down on opposing bank.

9. Install camshaft carrier covers. Install breather hose and crankcase vent onto rear cover. Install

timing belt covers.

10. To complete installation, reverse removal procedure. Refill cooling system with 50/50 mix of

water and coolant. Open air bleed valve on thermostat housing while filling cooling system.

Adjust drive belts to proper tension.

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