Hello, my name is XXXX XXX I am here to assist you

Are you trying to set the ignition timing or the timing chain timing?

Ok, let me get the info on that for you

On these there is an inner timing chain and an outer timing chain.

The inner has to be set up first and then the outer

Nissan's method involves links on the chain that are a different color / plating that line up with marks on the sprockets.

Do you know why it jumped?

Look down in at the lower sprocket and you will find your answer...the teeth are practically ground oof

correction "off"

The idler in the middle

There is a weakness in that sprocket and you will need to replace it.

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There is one other situation that you need to be aware of

There is a very great likelihood of the engine now having bent valves.

Have you removed the valve cover and inspected for bent valves?

No, you can often see one or more valves sitting lower than the others

If you can't visually tell then you can do a valve clearence check and that should tell you the story

In a shop we typically do a cylinder leak down test but that requires a special tool

Did it jump time while you were driving it?

I would have a hard time believing that it didn't bend valves

Do you happen to have feeler gauges?

Ok, the way you check the clearence is with the lobe up on each valve and a go/no go method. In other words you put the one feeler gauge in and it should go then you take the other thicker one and it shouldn't go then you have identified if it is within specs.

The exhaust valve specs are: .013 and .016 so if you have an exhaust valve with the cam lobe up you get a .013 and it should go then you take a .016 and it should not go.

The intake is the same concept but with a .010 and a .013

I suspect you will find some that have quite a bit larger clearence than they should in which case the valve is bent.

Yes, the proper way to time this engine starts with the lower chain and times it to the intermediate sprocket by means of the marked links and some dots on the sprockets. then you line up the upper chain in the same fashion. As I said earlier the typical reason for them to jump time is that the intermediate sprocket goes bad and the teeth practically strip off of it. The proper repair involves a complete timing chain kit.

You could see if you can get the intermediate sprocket by itself, however, your first concern is whether the valves bent or not.

Check this out:

http://shop.ebay.com/i.html?_nkw=Nissan+Sentra+timing+chain&_armrs=1&_from=&_ipg=

Let me get that for you

It is a several step process:

1: Tighten all to 18 INCH LBS. PLEASE NOTE THAT IT IS IN INCH POUNDS AND NOT FOOT POUNDS. If you don't have an inch lb. torque wrench this is 12 times less in inch pounds.

2: Tighten all to 53 inch lbs.

3: Tighten #15 (the one that is in line with the spark plug holes) to 56-74 inch lbs. and the remainder to 80-105 inch lbs.

There is your torque procedure.

Thanks for your question.

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