If the knock speeds up with rpm increase then it definitely is the engine. if it is a solid sounding knock that would be bottom end. if it is more of a hollow knock or more like a tick then could be top end...lifters, exhaust leak or check to see if anything is hitting your cooling fan.
SOURCE: Ticking noise
If it's just a light ticking alot of the 2.2 litres have the same problem if it's what is wrong with mine it's the lifters knocking and the same with alot of other gm motors trying using an oil stabilizer like lucas
SOURCE: Car wont start, makes a clicking sound under the hood
When you turn the ignition key to the start position you apply 12 volts to the solenoid. The solenoid is a relay switch that closes when you turn the key to the start position. When it closes It applies 12 volts to the starter motor.The starter motor draws a lot of electrical current, (so much so that they could not run that current thru the ignition switch, so they use the solenoid) What you hear clicking is the solenoid closing, or trying to close.I assume that "*****clicking" as you define it is a chatter rather then one click.
Possible causes: A low battery voltage. Has the battery been replaced in the last few
years few years. Try charging over night and see what happens
Bad connections on the battery terminals. Check for any white powder on and around the battery terminal. Use baking soda and water to clean the terminals (it'll fizz) then clean theem with a terminal brush. You can get one at any auto store
Bad connection on the starter solenoid
If it a manual shift, there is usually a kill switch somewhere on the shift mechanism
that prevents the starter from working if the car is in gear and the clutch is out
In automatic shifter the kill switch is in the shift selector mechanism so you can't start the car unless you are in park.
Hope this helps Lood luck Loringh
SOURCE: Ticking noise in engine
May be mice, but I had a truck that did that from a worn speedo cable.
Regards
Apeal
SOURCE: My honda accord is making a humming noise
it sounds like your powwersteering pump check the fluid level and if its low put powersteering fluid for hondas back in there.
SOURCE: knocking under valve cover on cold starts
hi if it goes awat after a few seconds its a hydrolic lifter for one of the cames will go for years before it need replacing
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