Timing chains are relatively cheap compared to the damage a stretched on can cause. Tell tale signs of a stretched chain are that your timing marks don't line up at TDC and your cam chain adjuster is at or close to its max extension.

What are the symptoms of a stretched timing chain?

When a timing chain is loose or stretched, you might experience misfires while driving because the timing between the valves and pistons is out of sync, which affects the combustion in the engine. A stretched chain can skip a gear on the cam or crankshaft so that the engine's timing falls out of calibration.

How long will a stretched timing chain last?

It connects the crankshaft to the camshaft. The metal links in the chain move on the tooth sprockets on the end of the crankshaft and crankshaft so that they rotate together. The timing chain normally needs to be replaced between 40,000 and 100,000 miles unless there is a problem.

What does a stretched timing chain sound like?

Listen for a metallic sound that resembles a rattling or scrapping noise. The sound can be intermittent or constant, but it will be a metal to metal contact. If you hear a rattle, metal to metal slapping or scraping coming from inside the cover, it indicates a timing chain noise.

Related Question How do you know if your timing chain is stretched?

How do I test a timing chain?

What causes timing chain rattle?

Timing chain noise is commonly most noticeable during cold startup of the vehicle when oil pressure and oil flow is at its lowest. Excess slack in the timing chain can cause a rattling sound or even a clanking sound if the slack is severe enough to cause the chain to contact the timing chain cover.

How much does it cost to change a timing chain?

For most cars, a timing chain replacement costs between $413 and $1040, or you can order the parts themselves for $88 and $245. It is a tricky repair though, so unless you're particularly skilled it's usually best left to a mechanic.

How do you know if your timing chain needs to be replaced?

When to Change the Timing Chain

  • Timing chain noise.
  • Engine misfire and poor performance.
  • Difficulty in starting the vehicle.
  • Illuminated check engine light.
  • Engine vibration or shaking when idling.
  • Engine won't start.
  • How do you know when to change your timing chain?

  • Your vehicle has a rough idle, meaning your engine shakes.
  • Your car backfires.
  • The vehicle seems to be working harder than normal.
  • Your car will not start at all, indicated a complete timing chain failure.
  • Can you tighten a loose timing chain?

    Rotate the eccentric to tighten or loosen the timing chain. The timing chain should be loose enough to prevent binding and tight enough to keep from falling off. If the chain is tight in one spot, readjust the eccentric and check again.

    Can you drive a car with a loose timing chain?

    If the timing chain were to break, it will jeopardize the entire internal combustion process. This means you won't be able to drive your vehicle anymore.

    Why does my timing chain keep stretching?

    The most common cause of timing chain stretch is lack of maintenance and regular oil changes. As the chain runs around the gears of the camshafts and crankshaft, the movement between the rollers and links causes wear and elongation. As the timing chain wears, this can change the timing of the camshaft and crankshaft.

    What can damage a timing chain?

    A timing chain can break with either too much or not enough tension. If the chain does not have enough tension, it can develop slack. This can result in the chain "slapping," leading to premature fatigue. A chain with too much tension can also fail, as it is placed under excessive stress.

    How do I know if my timing chain tensioner is bad?

  • Engine may stall or run rough.
  • Noise in the front of the engine (a rattle or rumble, associated with engine speed)
  • Check Engine Light may illuminate and set misfire, camshaft sensor, and crankshaft sensor codes.
  • What happens when the timing chain jumps?

    An engine with a jumped timing chain will show signs of very sluggish and slow starting. This happens because the firing sequence is retarded due to a chain that has jumped a tooth. A chain that has jumped two or more teeth may not start at all.

    Is it hard to change a timing chain?

    Changing a timing chain is not outright difficult but is considered a complex job due to the large number of steps involved. The timing chain and water pump are both labor-intensive jobs in the same area of the engine, so knocking out both now can prevent having to do many of the same steps again later.

    How tight should a new timing chain be?

    For me on as fresh chain it should have no slack but very slight tension. If you lightly tap it it should not flutter but not be rigid. It's hard really to describe, it's more of a feel thing. It will stretch a bit once it runs so you don't really want to start out with it loose.

    How do you adjust timing chain?

    How do you know if your timing is too advanced?

  • Pinging/Knocking. Pinging or knocking indicates that pre-ignition is taking place.
  • Hard Starting. In order for an engine to start, the fuel and air mixture must be ignited within the cylinders at the proper time.
  • Overheating.
  • Low Power.
  • Increased Fuel Consumption.
  • Can low oil cause timing chain to break?

    The most common cause of timing chain stretch is lack of maintenance and regular oil changes. Worn out oil can no longer lubricate the chain and will cause the rollers and links to wear against each other.

    Why Do Some Tires Say XL?
    What Is An Intermediate Shaft