I'm looking at purchasing a 1999 Nissan altima with 125,000 miles on it, I just need to know if there are some particular things I need to look for before i purchase this.

Send me a pic and I will guide you thru fixing it.

Thanks for choosing FixYa and welcome to the sight.A timing chain can last 100,000 miles or more. Some can last the life of the vehicle. Here is the thing though. If it breaks, you are not going nowhere and it can cause engine damage. If you have the money and time, plus it is over 100,000, go ahead and have it done. If not, it should be fine through 125,000 miles. Some last forever and some can break before 100,000. You really just never know. The call is yours. Thanks for choosing FixYa. If you need anything else, just let me know.

2004 nissan altima Visit the on-line store, known as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.

2003 Nissan Altima 2.5 S maintenance manual says 60 k miles or 48 months to flush the coolant and replace it. 105 k miles or 84 months replace the timing belt.

google nissan altima resistance info you should be able to get more info than youll ever need.

White smoke usually indicates a blown head gasket.

Any thing could be wrong. The best thing to do is to take it to Autozone or to a shop and have diagnostic test done on the car. Autozone does not charge to have it done and most shops will not charge you if they do the work.

there shoul dbe an acess panel on the lower left side of the drivers side dash. remove the cover and look on the back it should say which one is the right fuse, simply pull the old one out and push in the new one

That all depends on the mileage, first tune is 100,000 miles, the very least you will need is spark plugs, fuel filter and air filter, use factory spark plugs, many brands available but the factory plugs work best.

Does it have leather seats?? if so, you most likely need one of the side air bags. Most likely drivers side.