Timming chain noise - 1996 Nissan Pickup

B Mckenna, Timing chains can make noise, when you say the noise does go away sometimes, it sound more likely to be a valve lifter or tappet noise. You can pick up a mechanics stethoscope cheap and listen to the noise and hear/see if it is louder from the timing chain area or the valve covers to determine location.
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I don't know what "timming" or "minic" means, but (from context) I'm assuming you think that you are having some kind of a a TIMING chain problem.
The timing chain simply goes around the crank shaft sprocket and around the cam gear, turning the cam shaft. If it is in place, your vehicle will run. If it breaks, the vehicle will not run. If it is loose, your vehicle may run rough, but there will be an obvious rattling noise coming out of the timing chain cover at the front of the engine, as it moves the tensioner aroundr.
That's about it for a timing chain. There is nothing else to it.
Hope that answers your question!
Now if you have an actual SYMPTOM you'd like diagnosed, try again.... and use spell check :)

timming chain is open.

no chance from this one try a direct question to DJtech as i think he has access to this sort stuff but iam in europe so no chance sorry

well if you know its making noise from the timing chain then its probably time to replace the chain and chain tensionors and chain guides, the tensioners and, guides are more likely to make that type of noise but if you havent replaced the chains it would be a good idea to do it all at once

Hopefully its only a bad water pump but it needs checked out by a qualified mech ASAP. If the chain/belt goes it will be costly to correct.

YOUR VEHICLE IS OUT OF TIME. GET THE TIMMING DONE. YOU MAY HAVE TO REPLACE THE TIMMING CHAIN. BUT FIRST WITH THE VEHICLE RUNNING TRY ROTATING THE DISTRIBUTER A LITTLE AT A TIME AND SEE IF IT STARTS TO RUN SMOOTH AND STOP POPPING

Timing belts don't while because they don't slip! Could be the water pump/alternator belt.

Don't forget, diesels make a tapping noise. Its endicative of there design. get a mechanics stethiscope and listen to see if the noise is from the timming area or some place else.

tepfy

It is not in time,It is close enough to make it run.You should recheck the timing marks and adjust it.