Where is the timing chain on a GM engine?
The timing chain is hidden behind the timing cover and you must remove several components such as the water pump in order to access the timing chain, but once those are removed, the timing chain can easily be pulled off of the GM engine. You should expect to spend well over an hour removing the timing chain from the GM engine.
Where is the timing chain cover on a Grand Prix car?
You should have a good knowlege of the Grand-Prix engine and its components before attempting timing chain repair. Remove the timing chain cover, located on the left side of the engine block when you’re looking in from the front, by unscrewing the bolts around the edge of the cover with a socket wrench.
Why is timing important in a Grand Prix car?
The camshaft, crankshaft, pistons, spark plugs, alternator and valves all have to perform their tasks in the right order at the right time or the engine won’t run correctly, or at all. The Grand-Prix models have powerful engines so it is very important that the timing is done accurately or the sheer force of the engine could damage itself.
How do you change the timing chain on a water pump?
Remove the belt. Once tension is released, the belt should slide off of the other pulleys easily. Remove the heater hoses from the water pump. If your model has heater hoses attached to the water pump, loosen the hose clamps with a screwdriver and slide them back onto the hose. Wiggle the hose and pull it off of the water pump.
When to replace timing chains and guide assemblies?
The two DOHC timing chains and guide assemblies should also be replaced at the same time. As for timing belts, they do not stretch with age, but become weak internally and may fail with no warning. Consequently, a visual inspection of the belt may not reveal much. If the mileage is not known, replace the belt.
How to set Vortec timing on a GM Truck?
You need a live data scan tool that can read timing, and you have to rev the engine to 1000RPS I think, then set the timing on the code reader as close to zero as you can. Then lock down the distributor, and your set. This will take 2 people, one to rev the engine and read the data, and someone else to turn the distributor.
Do you need to change timing chain on OHC engine?
On OHC engines that use a timing chain, the timing set may also include a chain damper or tensioner. The chain damper, tensioner, guide or rails should also be replaced when the chain and sprockets are replaced because these components play a vital role in supporting the chain and keeping it tight.
When to replace timing belt and gear set?
Don’t take a chance reusing an old timing belt, chain or gear set. A high mileage timing chain that has stretched and is loose can’t maintain accurate valve timing and should be replaced if play exceeds specifications. The camshaft and crankshaft sprockets should also be replaced along with chain.