Developing a ping... not bad gas, low miles - 1986 Lincoln Town Car

Sound of engine pinging is usually caused by to low of an octane fuel being used. Try using a higher grade of octane gas. Timing may be affecting the burn also. High miles on
engine may indicate that timing belt is in need of replacement.

Cheap gasoline, maybe , moisture in the fuel cell (gas tank) ,will also do it, heet gas treatment will take care of it, used as recommended.

What are the indications of bad gasoline?
A:

QUICK ANSWER

The symptoms of bad gas involve a lean misfire, which creates a P0300 code in newer cars, engine detonation and pinging, sputtering and stalling. These occur because the bad gas fails to keep the fuel system clean and introduces contaminants that can clog fuel filters, fuel pumps and fuel injectors. In addition, bad gas can have an octane rating lower than advertised, leading to the aforementioned detonation and pinging.

FULL ANSWER

Receiving bad gas from a fueling station is more common than the industry admits. The only cure for fixing bad gas is to drain the fuel tank and fill it with fresh gasoline while cleaning the fuel system in the process. Bad gas can be caused by gasoline suppliers not mixing the required amount of additives in the fuel, causing them to be less effective in preventing deposits and causing fuel varnish to form in the fueling system. Sometimes the tanks, whether at the fueling stations tanks or in the vehicle's own fuel tanks, are contaminated with dirt, corrosion and water. Because no filtration system is absolutely perfect, even with the various filters and stringent EPA requirements in place, these contaminants end up inside the car and may damage it. Gasoline that is lower in octane often occurs because either the supplier or the fueling station intentionally sells regular fuel as higher octane, profiting over the difference in price.

Could be bad gas with low octane or carbonned-up pistons or valves.Try using a higher octane gasoline along with some really good fuel system cleaner added to gas tank. don-ohio

A bad EGR can make it ping..Also a low Barometer sensor can also make it ping...But first i would check the knock sensor

Some Ford engines are not equipped with knock sensors. Yours may be one of them. Located in the wiring loom, close to the ECM, is a "jumper" that when removed retards the timing 4 degrees. This should correct your pinging problem. as for the missfire try changing the plugs and wires .also check the egr valve. thanks

a knock sensor is basically a resistor and a spring, and what it does is it reduces valve ping. Valve ping is when the fuel is not properly burned and tries to explode before the valve is fully closed and it will make a pinging noise when under load or at higher RPM. If the sensor is bad it can cause detonation, detonation is when the fuel explodes before the valve is closed and can cause a cracked, or exploded piston, bent valves etc. Your problem does not sound like that of a bad knock sensor, predominantly you will only hear the "ping" under load and not at idle and if it was bad your check engine light should be on. this sounds more like a rod knock. change the oil again and use only AMSOIL and an amsoil filter, amsoil is proven to last longer than any other oil, 600,000 miles without a change, or a filter change.

do not use any fuel additives at all. and only use 87 octane fuel nothing higher. 4.6 and 5.4 ford engines do have a pinging sound especially with a load. but it is normal

It sounds like maybe yu have a fuel filter that getting plugged up.
To check this, see if you can remove it from the engine, then very carefully blow thru it in the direction the fuel travels, if clean you should be able to blow thru it easily, if not then replace.
The P132 is (E132) .................. Knock Sensor Circuitry Failure .... The knock sensor is what prevent engine ping from low octane. ...
It could also be you just got some bad gas.
You also might try topping off the tank with gas from another place and bring the octane level up if that is the problem.
Hope this helps
Good luck

Sounds like crappy gas. The 289 may not like pump no-lead and the rattling sound you are hearing may be pinging / knocking.