I have nissan sentra 99 motor 2.0 timing belt

over head cams use a belt and only have a plastic cover and chain is in oil from the motor so it has metal around it

Did you check for fuel pressure at the motor?

Timing Belt jump teeth ?

DOes it have 2 belts on it or just 1? Some Sentras have 1 or 2 belt systems.

it's a plastic belt

there are 2 different 1.6L engines for this year. If you can find the right flywheel, you'll probably be fine. Other possible issues might be with wiring, but I checked the wiring diagram and it makes no distinction between the 2 engines. Still, I would check the connectors and make sure all the electric work will fit. Hopefully the computer will not object to the engine...

1996 Nissan/Datsun Sentra 1.6L SFI DOHC 4cyl

Nissan Sentra/Pulsar/NX 1982-1996 Repair Guide
The alternators for Pulsar and Sentra have not changed much over the years. However, the 1987-88 alternators for Pulsar and Sentra have a different internal diode assembly.

1. Disconnect the negative battery terminal.
2. Disconnect the 2 lead wires and connector from the alternator.
3. Loosen the drive belt adjusting bolt and remove the belt.
4. Unscrew the alternator attaching bolts and remove the alternator from the vehicle.

To install:

1. Install the alternator and retaining bolts loosely.
2. Install the belt and connect the wiring.
3. Adjust the belt as outlined in . Torque the retaining bolts to 25 ft. lbs. (34 Nm).

I hope help you with this (rated this help).

THERE SOULD BE A DIAGRAM UNDER THE HOOD ON A WHITE STICKER SOMEWHERE IN THE FRONT OF THE MOTOR.HOPE THIS HELPS. LET ME KNOW. GOOD LUCK

well maybe there was some mis-communication there , nissan stopped using timing belts in sentra's and actually most all models in 2000 , maybe they were telling you that your serpentine belt needed changed ? but to answer your question , you do not have a timing belt in your 2002 nissan sentra . its a chain . thanks

J5

you will have to take the whole front of the motor apart. it should be alot easier to go through the fender well to do this.

The belt tensioner is located under the timing cover. It is 1 1/2 round and about 3/4 inch with a groove in the middle where a bolt is tightened. When you remove the timing cover you will see the timing belt, the camshaft sprocket and the crankshaft gear. The timing belt goes around these components.. The belt tensioner is loosened and the new timing belt is placed. The sproket also has to be replaced if it is broken. Be careful to notice the little marks that are aligned on the sproket and above the camshaft.. They can be small arrows that have to be aligned exactly the way you took them off. replace the belt and you tighten the tensioner so the belt fits snug and tighten the bolt in the middle of the belt tensioner. It is not too difficult, if you know something about mechanics. If you don't, you will be better of taking it to somebody who does know.