Mechanics

KNOKING SOUND COMES EVERY MORNING I START MY

Honda Civic

I have a Honda civic 97 ( 1.6 vti) with 82000 milage.
My car is in perfect condition except one problem. Every morning when I start my car, for almost 45 seconds a loud knocking sound comes out of the engine then it comes to normal. I am using 20-50 viscosity Havoline engine oil.
Please advise me about using a sinthetic oil instead of a conventional. I heard that if a car is not used to a sinthetic oil and ultimatly switching to a sinthic oil could damage the engine seals.
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Anwars65
April 21, 2006.




Hummm With those low miles you shouldn't have an engine knock. Is it a deep low engine knock or a light upper engine knock? Stand by the engine and listen while someone starts the car.

I DON'T like 20-50 in a Honda. Put in the required oil 5W30. The engine is so precise that that thick oil won't flow and it causes engine problems. Later engines require 0W-20 oil. Good luck

Tiny
Losone
Apr 21, 2006.
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Tiny
Anwars65
Apr 22, 2006.
I would remove the valve cover and do a visual inspection when the engine is cold. Check all the cam towers and see if anything is broken.

Move timing belt back and forth with your finger and see if there is slack. There should be none.

The problem could be a water pump or cam belt tensioner. If the belt breaks you have lost a cyl head. The recommended replacement is at 60K miles.

I feel the noise is cam belt related and it will radiate toward the top of the engine. Don't wait, have the belt repleced if you feel any slack in the timing belt or the teeth look worn or if you haven't replaced it in the last 60K miles.

It may be stretched and a valve is just touching a piston making a knock. Don't run the engine anymore until you have found the problem. Good luck

Tiny
Losone
Apr 22, 2006.

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