My car recently started to sound like a diseal engine. So my step dad took a look and found that the timing chains slap guard was completely broken, and so he fixed it. But the problem persists so even though it was broken it wasnt the cause of the sound. The rattle sounds like its coming from somewhere the timing chain but it could be something else. Help please.
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: '94 Nissan Altima rattles
you will need new upper timing chain and sprockets. Common problem on altima your year. Nissan has TSB for it. First they had us remove the upper timing chain guide, but after that, they had us replace all top chain components.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
My best guess would be that the timing chain tesioner which is hydraulic, is not supplying enough pressure to the chain and it's slapping against the guides. You might try using a lighter weight oil or switch to a 5w-30 synthetic and see if it resolves the problem.
A Nissan ultima does not have a timing belt,it has a timing chain,look up in your manual for your maintenance schedules when and at what mileage you are needed to change the chain,usually the chain is changed when it is loose through stretching in wear over mileage,a very loose chain has a rattling noise in the engine compartment by the cam gears,good luck ,hope that I was helpful.
It is possible that you have some timing chain noise, especially if you have the 3.5L engine. The secondary timing chain tensioners on the 3.5 have a known problem, Nissan has issued a service bulletin regarding this and there is an updated part to replace them. It is not a cheap job, but your dealer may give you some "goodwill" depending on your mileage. If you have the 2.5L the problem may a couple of other things...even more serious! They had catalytic converters that came apart and got ingested into the engine, eventually destroying it. Try googling "Altima rattle" and include your engine size in the search. There is a ton of info on the net about noises in these cars.
I have a '94 Altima with 2.4 liter 4 cyl. engine. At around 150K the timing chain and tensioner were replaced - should solve your problem, too. If you're sure the chain is rattling you should really get it serviced now, not later. Also, if your car is running rough it could be more than just the chain and tensioner; it could be your ignition system, such as plugs, coil, distributor, etc. Bottom line is, your car needs to be checked out right away.