[MarkPer]

I recently purchased a used 98 Sentra GXE, with a 1.6L dual overhead cam, 16 valve engine that was making some timing chain noise. The local shop looked at it and determined that the upper chain is loose, the upper tensioner has failed, and the chain sprocket is missing some teeth. They didn't think it was worth rebuilding. What do you experts think? I know some shops are reluctant to step into jobs like this, but I am not really excited about trying to drop another wrecking yard engine in. Thanks for your input in advance.

 

[sentraracer487]

if its just a timing chain and some sprokets i wouldnt junk the whole motor, just shop around for some good prices on parts it'll be cheaper than a whole new motor

 

[sunnysentra]

many shops are lazy and do not want to do any work. if you cannot fix it with a computer, they can't do anything. so many dealers are the same way. they will try to rip you off so be careful.

All you have to do is remove the front cover and replace the chains, there are 2 and tensioners and if the center sprocket is bad, then it comes off!! replace it. the motor is good.

how many miles?
Chris 92 classic

 

[MarkPer]

The odometer says 119,000, but the shop said the engine was a wrecking yard special that had been recently replaced.

 

[MarkPer]

I am going to hunt down some diagrams. Are the sprockets at the cam shaft removable?