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oliver, Technician
Category: Car
Satisfied Customers: 437
Experience:  schooled, trained, worked in industry for years. specialize in the odd issues
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A new question is answered every 9 seconds term... noise coming from my engine, or under

Customer Question

I have a clicking... or ticking, not sure which is the best term... noise coming from my engine, or under it. I have no clue what do do with cars and the noises they make. When in idle, it clicks. When revving the engine, it clicks. During my adventures under the hood, I noticed the ENGINE COOLANT was low. So I filled it with water temporarily and drove to an AutoZone. Got some antifreeze, and when I opened the cap again, all that water I poured into it was gone. Completely. For a while I've been driving with the service engine lamp on, and after I filled it, it went off. But the noise persisted. Please help. I dont want my car to blow up on me.
Submitted: 8 years ago.
Category: Car
Expert:  oliver replied 8 years ago.

if the fluid is not leaking onto the ground, then it being burnt, the tic you have can be bad spark plugs from being fouled out with water, or a head gasket or intake gasket. the way to test is to do a leakdown test on each cylinder, this will tell you exactly where the coolants coming from

Customer: replied 8 years ago.
how and what is a leakdown test on each cylinder? and is there any specific spark plug that i have to clean out?
Expert:  oliver replied 8 years ago.

i meant to send this as an info request, i accidentaly pushed answer. first thing, run the vehicle with the coolant fill cap off, add water and antifreeze, if you dont have premixed antifreeze-listed on the front label, then you will need to mix it 50/50 with water. fill the coolant while engine running, let the engine get all the way to normal temp and then make sure the heater is putting out heat, then top off the antfreeze as needed. then after this at any point go for a drive, to make sure the fluiod level just wasnt excessively low. if this has been done, or you know it was not excessively low then proceed as follows....





do all the spark plugs, always. a leakdown test is done with an air compressor and a leak down test gauge, air is supplied to each cylinder through the gauge with the compressor to one cylinder at a time, the gauge has an extension that screws into the spark plug hole. the gauge is marked to show if the cylinder is holding, and if it is leaking-and where it is leaking from. this back trace of the leak should tell you how the water is getting into the engine.


another question, is the ticking new, and about how loud is it? some engines develope a rocker arm tick that revs up and down with the engine, it can not be adjusted on your car without a part replacement