When you turn the key does the engine try to start but doesn't? Meaning does it crank but not start? If the engine does nothing then the first thing we need to do is put a wrench on the crank pulley and try to turn the engine by hand. If it does not turn by hand either then the engine is most likely locked up.
The low pressure and noise was most likely due to the oil pump not operating or it was so low on oil that it was no longer pumping oil but air. When this happens the engine internal components go metal to metal and make the noise you are hearing.
Let's start with checking the oil again, and making sure the oil level is correct.
Then we need to turn the engine by hand with a wrench on the crank pulley bolt. Then we can go from there. Thanks
Monday, October 5th, 2020 AT 6:55 PM