Skip the auto shop - Our mechanics make house calls

Q: Timing chain positioning

asked by on

Heard noise coming from behind timing chain cover. Vehicle started running bad and just stopped running.Took off valve cover and chain was very slack. Replaced timing chain and tensioner. Made sure my timing marks were in place . Took pin out of tensioner and rechecked timing marks 3 or more times and all 3 were in place. Turned the engine over a few times and all timing marks were off. I don't know if the cvvt system had effected it or not. I do not know what I should do now could you be so kind to let me know what to do next thank you VERY MUCH!!!!!!

My car has 160000 miles.
My car has an automatic transmission. 2.4 DOHC cvvt

This system is a bit complex. I can give you some instructions, but I highly recommend getting a hold of a repair manual or purchasing a yearly subscription for just your vehicle from AllData. It is only $25 for a years subscription from AllData.

There are two separate sets of marks on this system. One set is for aligning the timing chain to the camshaft gears and the intermediate shaft gear. There will be marks on the chain that raps around the crankshaft gear as well. These marks will not line up after you turn the motor over.The other marks are on the inside of the camshaft gears and align with the cylinder head parting line. If you were to draw a ling through the center of both camshaft gears, they should line up with that imaginary line.

The crankshaft key way should be aligned with the mating face of the main bearing cap. You can confirm it is in the correct position by verifying the number one piston is at top dead center. If you have removed the balance shaft timing chain, these marks really need a visual diagram to understand where they should be aligned. Without a diagram I am not very confident it can be explained very clearly.

This may be difficult to to follow, so again I highly recommend purchasing a repair manual in digital form or a book. If you feel this is over your head, I recommend the following inspection to help you out. Timing chain replacement

Good luck! I hope I was able to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Checking if timing belt needs to be replaced

You really will need to take something apart. A lot of times the top timing cover is just plastic that has few bolts that you can cap off and look inside. That's the best way because you can even look...

Q: Ac not blowing cold air

An AC system that blows warm could have several faults. The first and most suspected is a low system charge. If the system is low, then there is most likely a leak somewhere and recharging only prolongs the inevitable: the...

Q: How do I replace the remote keyless entry transmitter battery?

The remote keyless entry transmitter battery usually lasts for a few years. If the battery dies, you can easily replace it by following these steps: 1. Use a narrow tool to pry open the center cover of the transmitter. 2....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.