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Timing is off on bottom mark. I think the timing chain is stretched is this the correct diagnostic

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Check the belt tensioner, it may be broken

Posted on Feb 22, 2009


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How to set timing

your car has a timing chain, if it stretches out far enough it needs to be replaced. It has an automatic adjuster on it to keep the timing correct as it stretches, when the chain stretches beyond any more adjustment you need to change it before it breaks.

Apr 02, 2014 | 1998 Chevrolet Cavalier

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On 2002 ford explorer,4.6-v-8, when i was changing timing chain guides and adjusters the chains jumped teeth on the crankshaft. The manual says the left camshaft timing mark should be approx. @ 11:oo & the...

Look for some Youtube videos on this repair. If I remember correctly the links on this chain have different color metal for the spots that the cam tooth goes against. When each side is in the proper tooth the right and left colored links will be on the cam mark and the crank mark should be on the timing TDC mark. Sounds like the slack you describe is wrong and a tooth is off because the tensioner is allowing slack.. You need to slip a tooth one way or the other until the tensioner has room to be in a neutral position.

Mar 10, 2017 | 2002 Ford Explorer

1 Answer

Is there a way to check the timing chain without removing the cover ( this is quite a job) for a look at the timing marks

no way of doing so. need to remove cover. i have been doing this since 1996 and have never seen chain driven nissan jump timing. have seen some timing belt cars jump, but never chain driven engines. i think you have something else going on. i have done many and many timing chain jobs on frontiers and maximas, but not for a timing chain jumping issue. upper timing chain shoes wear out and engine gets noisy. i have to say i have seen some with the primary chain stretched a bit, but car still ran fine.

Sep 12, 2012 | 2005 Nissan Frontier

2 Answers

How do you check timing chain on 2000 chevy impala with 3800 engine

This is a 3 to 4 hour job if you know what your doing. Everything on the front of the engine has to come off. These chains rarely go bad or stretch to make an engine run bad. What is the problem you are having?

Sep 21, 2011 | Chevrolet Impala Cars & Trucks

1 Answer

When looking at the jeep liberty transmission from under neath should it oerfectly aligned or set crooked

Technically, timing chains are designed and built to last the entire life of the engine. So in theory, you should replace it only when it's broken. However, if the chain breaks while your engine is running, it could wreak considerable havoc, so waiting for a break isn't the best practical strategy. Before a timing chain breaks there are signs of wear, and it isn't hard to check for them. If your Jeep Cherokee is showing some of the signs, it is time to replace the timing chain.
    Timing Chain Function
  1. The timing chain connects the camshaft to the crankshaft via a gear system so that the top and bottom ends of the engine rotate together. If the timing chain has stretched and is skipping teeth, the timing will be thrown off badly, causing the Cherokee to run inefficiently, if at all. If the timing chain breaks altogether, the Jeep's engine will simply shut off, and many valve train components can be damaged in the process.
  2. Loose Chain
  3. Remove the distributor cap on the Cherokee's engine so that you can see the rotor. Then rotate the engine by hand with a wrench on the crank pulley very slowly. The rotor should begin to rotate with the engine almost immediately. If there is any delay, it is likely that the timing chain is stretched and needs to be replaced. Another way is to put a timing light on the Cherokee while the engine is idling, and watch the timing mark. If it wanders a few degrees in either direction, then the chain is probably stretched. Sometimes, a loose chain will cause a loud clicking, especially when the engine is cold and under power. The noise tends to go away once the engine warms up.

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Aug 17, 2010 | Jeep Liberty Cars & Trucks

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I need a timing chain diagram for a 2002 jeep grand Cherokee with a 4.0L engine

This is the procedure on it.

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NOTE: Assemble the timing chain, crankshaft sprocket and camshaft sprocket with the timing marks aligned Fig. 5 .
  1. Apply Mopar(TM) Silicone Rubber Adhesive Sealant to the keyway in the crankshaft and insert the key With the key in the keyway on the crankshaft, install the assembly on the crankshaft and camshaft.

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Install the camshaft sprocket retaining preload bolt and washer Fig. 6 . Tighten the preload bolt to 108 N.m (80 ft. lbs.) torque.

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  • To verify correct installation of the timing chain, turn the crankshaft to position the camshaft sprocket timing mark as shown in Fig. 7 . Count the number of chain pins between the timing marks of both sprockets. There must be 15 pins. NOTE: Installation of the timing chain with the timing marks on the crankshaft and camshaft sprockets properly aligned ensures correct valve timing. A worn or stretched timing chain will adversely affect valve timing. If the timing chain deflects more than 12.7 mm (1/2 inch) replace it. The correct timing chain has 48 pins. A chain with more than 48 pins will cause excessive slack.
  • Install the crankshaft oil slinger.
  • Replace the oil seal in the timing case cover.
  • Lubricate the tension spring, thrust pin and pin bore in the preload bolt with Mopar(TM) Engine Oil Supplement, or equivalent. Install the spring and thrust pin in the preload bolt head Fig. 6 .

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  • Install the timing case cover and gasket.
  • With the key installed in the crankshaft keyway, install the vibration damper, washer and bolt. Lubricate and tighten the bolt to 108 N.m (80 ft. lbs.) torque.
  • Install the serpentine drive belt and tighten to the specified tension, Refer to Engine/Drive Belts, Mounts, Brackets and Accessories/Drive Belt/Service and Repair for the proper procedure.
  • Install the fan and hub (or Temporal fan) assembly. Install the shroud.
  • Connect negative cable to battery
  • Jul 16, 2010 | Jeep Grand Cherokee Cars & Trucks

    1 Answer

    When you put timing on 4 degrees as the label on the motor says it does not run power. What should the correct timing be for a 92 GMC 6.0 liter motor

    The correct timing would be what the sticker says. However, if there is considerable mileage on the timing chain then your timing would be off even when set with a timing light because the chain will stretch with usage. The more miles on the engine, the more stretch in the chain. To myknowledge there is no formula to determine how much extra advance to use to compensate for that stretch. Advance your timing a couple of degrees at a time until you can find a satisfactory amount of power and still have the engine start easily. If it starts to turn over hard,especially when hot you have gone too far, back your timing off a little. Or you could replace the timing chain and gears as a set. Hopethis helps.

    Oct 07, 2009 | 1992 GMC G2500

    2 Answers

    How do u know if your chain is worn out or if it

    Unhook the master link and lay the chain in the concrete. Next, hold one end to the concrete and sort of push the chain towards the stationary end. The object is to push the chain together as opposed to stretching it apart. Mark the concrete at the location of the shortened end. Now again hold the stationary end firm and this time stretch the chain to its' fullest length. Mark the concrete again at the end of the stretched chain. If the distance between the marks is over one inch the chain should be replaced.
    Look at the teeth of both sprockets. Are the teeth rounded on the end or are the teeth forming a pointed looking end? If rounded, then the sprocket is good. If pointed, then the sprocket is bad.
    Bad sprockets can ruin a good chain. The exception to the one inch rule is a chain that is rusted and no longer limber. Replace a rusted chain. Remember, always install the master link clip with the blunt end facing the direction of chain travel.
    Please rate this solution, Thanks.

    Mar 18, 2009 | 2001 Yamaha YZF-R6

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