An engine knock ia almost always very serious. Stop drivng this car and take it to a professional. Not a repair for a novice.
If you have coolant in the oil, it will cause the rod and main bearings to fail.
what engine?
No.
Cause low pressure oil pump
Check the compression for the cylinders on the Eclipse. If there is?æa leak in one of the cylinders then this could cause the jerking.
Thermostat, or fan motor if it does not blow hard.
No it should not
When the fuel in an engine cylinder ignites prematurely or unevenly to cause power fluctuations and a "knocking" sound. usually occurs when an engine is very how or improperly timed.
Engine knocking can be caused by numerous things. Having the incorrect spark plugs, carbon deposits on the cylinder walls, and being low on engine oil may all cause a knocking sound.
You have a blown head gasket or a cracked head. STOPdriving this car immediately until you have it repaired. You will destroy this engine if you continue to run it.
Having a bad rod bearing could cause a truck to make a loud knocking noise and shake when driving at high speeds. The engine having a coolant leak or an engine timing problem could also cause the knocking noise.
can you elaborate? engine noise? stationary/moving? ticking, tapping or a definite knocking?