Service Engine Soon light + Changing oil pressure..

plugs are always the last to suspect when there are misfires
It is most likely injector problem from
low fuel pressure ,
dirty injector tips , injector wiring and harness or
ECM problems

Oil light is rather important it goes out if oil pressure is good comes on if oil pressure is low when it comes on damage is expected with continued operation like wearing of main bearings and pistons and cylinders can lead to a engine rebuild

Your oil is under pressure as it is circulated through the engine, and at low RPM there is less pressure pumping the oil around. With the broken dipstick, I presume there is an oil-pressure leak and at normal operating speed there is enough capacity to maintain proper pressure, but the leak is more than the engine can overcome at low speed. I would suggest replacing the broken dipstick.

If your oil is full, it's most likely electrical. If it's not electrical, then it's most likely something like a crack in the pickup tube, sucking air if I had to guess.

you probably have your finger on the problem. have oil pressure test .when engine hot minimum 12psi.and change the thermostat.Don't cost much

Its time for another car Jerry.
The oil pressure light was telling you the engine was running on less than 10 psi of oil pressure, and the knock was a rod or main bearing.
Now that the engine has been run low on oil pressure for some time, one of the rod or main bearings is junk, and so is the engine.
By the time you replace the engine, even with a used one, you could take the same money and buy another car. Even if you took the engine apart and fixed the bad bearings, the rest of the engine parts are very weak from running without oil.

diagnostic test should give you a clue to what is happening

ban news working on my wifes car let the garage sort it be cause every time it breaks its your fault becase you repaired it last lol you know how they are lol

if you are loosing oil pressure it could be a number of different things, first of all check the oil on level ground and make sure you don't have an oil leak dumping your oil out. if your oil level is good then how long since the last oil change? could be sludge build up in your oil pump pick-up screen, could be the engine getting worn and the bearing clearance becoming too great for proper oil pressure build up. best thing to do is take it to a reputable shop and have it checked.

should have two lights check engine and service engine soon.check engine means there is a malfunction.service soon is reprogrammable,when you change you oil. check you owners manual for reset.

I’m happy to help further over the phone at https://www.6ya.com/expert/kenneth_3efc1f8510674f04

if it comes on while driving down the road or while the engine is running, you may have low oil pressure due to lack of oil.Also if oil filter is cloged due to not changing the oil it will reduce oil pressure and cause light to come on. if checked and this is not it then it will be the oil sending unit and since you have a light, be shure to tell your parts house that you have a light and not a gauge.