Nissan pinging I had the timing chain replaced and now the engine pings under load.

You did not mention when this pinging occurs (all the time? idle? lugging under load?). If it is in fact in the engine, it is most likely a timing issue which can get complicated because it could be caused by a problem with the distributor, timing chain or chain tensioner, one or more faulty engine sensors, etc.

However, there are other causes of this noise. Most pinging noises at idle or low RPMs are not usually in the motor itself but rather from rotating parts that periodically touch something, and often happen when something comes loose or is bent, bearings get worn, or something made it into the engine compartment that shouldn't be there (a tool, a rock, etc.). Typical examples are worn out HVAC fan, cooling fan or AC compressor clutch bearings; a cooling fan blade touching metal or a loose shield; and so on. If this is the case, you should try to locate exactly where this noise is coming from - a stethoscope from an auto parts store may help.

Switch to premium to see if that is a temp fix. Then run a full strength fuel injector cleaner in the gas tank.

Pinging or detonation is caused by the spontaneous combustion in the chamber from incorrect air/fuel ratio and timing. It is most prevalent in lean mixtures under load. Run the fault codes and check for faulty HO2s and O2 sensors as they tell the ECM what mixture and timing is required to stop it

Your knock sensors might have gone bad, allowing the engine to ping. The knock sensors would usually retart the timing, to stop that pinging. They don't illuminate the check engine light when they go bad, but the code will be stored in the ecm if they're bad. Have your engine codes read to see if that's the problem.

Pinging is a sign of low octane fuel in the tank or the engine may have jumped time if the vehicle has high mileage, I believe the Lincoln has a timing chain rather then a timing belt, the chain is much stronger and lasts at least double to triple the amount of mileage a belt lasts.
Have a shop run a timing strobe on the crank to see where your timing marks are in respect to the factory requirements, if the car is timed properly and there isn't anything wrong with the gas in the tank(try adding an octane booster to see if that helps allieviate the ping) then test the computer system for any possible codes, perhaps the 02 sensor is bad or the I.A.C.(Idle Air Control Motor) is defective causing the engine to run too lean and ping, a code stored in the computers memory will reveal this.

Remove and inspect the spark plugs for heavy deposits or glazed-looking interior insulators. Make sure the plugs are the proper type for this engine. Heavy carbon build-up in the cylinder heads will cause pinging. If the ignition system is too advanced, it will also cause problems. Try a different brand of fuel. High engine temperatures can do the same (caused by poor cooling system or lean fuel/air mixture). If the check engine light is on, take the car to Autozone or a similar business that offers a free scan of the computer. This may provide additional clues. Hope some of this helps!

This is a timing issue....either your distributor timing is off (got turned by someone) or you have slipped a tooth or two on you timing chain gear set. The ping is called "preignition" it is caused by "retarded" timing. try "advancing" you timing! on your distributor, loosen the tension bolt with a wrench and turn the distributor to the right "counter clockwise" about a quarter inch at a time until the motor runs smoothly and does not ping under load "driving".

Good Luck,
Geodesygold

This car does not have a timing chain, it has a belt. The reason your knock sensor and O2 sensor is coming on is likely because your timing belt has stretched which caused it to jump time. Since the engine is not properly timed the fuel mixture is off and the engine is pinging/knocking and that is why the knock sensor is coming up. The sensors are doing their job and keeping the engine from blowing. You should put a timing belt on the car ASAP. I recommend changing the tensionors while you are at it.

Hi, you may need to reset the valves. this should fix the ping.

You can wait its just fine, However if you ever start to notice oil leaking from front cover, then you will need to change. If there is no loss in power feel sluggish especially on take off, Its almost impossible for these type of chains to break. So enjoy until the wheel fall off..lol. good luck