Some vehicles at some point have a knock at start up until the oil pump is primed and pumping oil. Best option is to put something like a mystery oil in that sticks to all moving parts to protect all moving parts. Good luck
This sounds like an oil pressure problem, The very first thing I would do is if it's almost due for an oil change do it now, if not replace the oil filter it actually has a diaphragm in it to keep the oil from leaking back into the engine when the engine is off causing the oil pump to have to fill the filter before lubricating the engine causing the lifters to rap and the connecting rods to knock, remember to add oil if you just change the filter. If the engine has a lot of miles you might want to consider an oil treatment like SLICK 50 it coats the friction surfaces and prevents wear. I hope this helps. Take care.
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SOURCE: oil light goes on and off and engine has a knocking sound.
This sounds like severe engine damage, do to loss of internal lubrication (no oil). That's the bad thing about 'idiot' warning lights, they come on when u have a severe problem, and the damage is done. You are going to probably have to purchase a used engine from an auto salvage yard, or purchase a re -manufactured engine. Sorry for the bad news, this is about as bad as it gets.
SOURCE: Engine oil light 2004 durango
sounds like you have a bad connection to the oil pressure sending unit or the sending unit itself is bad. look for a loose connection and if it's ok just replace the sending unit.
SOURCE: my 1999 4 door dodge stratus will not start or
This sounds like a bad starter, the starter is what cranks the motor and if the battery is good then i would say the starter went bad, if you tap on it it may start but the starter would need replacing, a quick test with a test light would be to have someone hold the key in the crank postion while you check the wires on the back of the starter for power, the big cable wire should have power at all times the small wire should have power when the key is in the crank spot, if theres power on the small wire then starter is bad, hope this helps,disregaurd the switch,sorry
SOURCE: engine started making ticking noise, checked oil
the ticking noise could be the rockers and the clearance may need to be checked and possibly adjusted.you should get the oil pressure checked with a gage to make sure its not an oil pressure problem.and start getting your oil changed on a regular basis as this is the most common problem for engine problems and failure and its the cheapest most cost effective maintenance.
SOURCE: 2003 Hyndai Elantra oil light has started flickering, Why?
If it flickers at idle, it "might" be engine wear, especially if you are approaching 200,000 miles. It might also be a faulty oil pressure gauge sending unit which is a little more likely.
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