Question about Buick Century

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My car is making like a ticking noise not so much a knocking... someone told me it could be a fly wheel or lifters or pistons.. could that be true...

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  • Master
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Yes, you have to localise it. I never could, I tend to hear stuff from all over the engine all at once. It could also be that gap setting on your tappets has become a bit to wide, its a wear and tear issue and would come from the top of the engine.

Posted on Mar 25, 2011

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Hi, ticking is usually lifters. If you let it go too long, it will wear out the camshaft. If you would like instructions for replacing the lifters, please reply with model, year, and engine size.

Posted on Mar 25, 2011

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  • hye_in619 Apr 18, 2011


    I have a 02 town and country. It started making really loud knocking noise and found out the bearings were shot and replaced them. Now, after replacing the bearings, it is making noise from the top of the engine. It sounds like gurgling/knocking; it is not that noticeable when in idle, but definitely noticeable when you give it a little gas. What is the next steps to fixing this car? Thinking about opening up the cylinder head.. I am not sure what are the things that could be causing this..HELP!

  • Jeff Turcotte
    Jeff Turcotte Apr 18, 2011

    Not sure what that could be, but I have pasted instructions for removing a valve cover. Take the one off where the sound seems to be coming from and check to see if anything is loose under there. You might want to enter your own problem into FixYa to see if other experts have an idea what it could be.

    3.3L & 3.8L Engines

    Properly relieve the fuel system pressure.
    Disconnect the negative battery cable and drain the cooling system.
    Remove the intake manifold with the throttle body.
    Disconnect the coil wires, sending unit wire, heater hoses and bypass hose.
    Remove the closed ventilation system, evaporation control system and cylinder head cover(s).
    Clean all gasket mating surfaces.

    To install:

    Install the valve cover with a new gasket. Tighten the valve cover bolts to 105 inch lbs. (12 Nm). Install the exhaust manifold crossover pipe. Tighten the bolts to 20 ft. lbs. (27 Nm) and the nuts to 15 ft. lbs. (20 Nm).
    Install the closed ventilation system and the evaporation control system.
    Reconnect the coil wires, sending unit wire, heater hoses and bypass hose.
    Ensure all wiring connections, cables, hoses, vacuum and fuel lines have been reattached.
    Refill the cooling system to the correct level.
    Reconnect the negative battery cable. Start the engine and check for leaks.

  • vasavm Mar 21, 2013

    1999 Buick Century 3.1 engine 6 cylinder.


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1 Answer

Why has it started knocking?

Knocking is pretty non descript as there are a lot of noises that are associated with an engine. A true knock is a very bad sign. However there are other noises that can be confused for knocking. One way to tell is the location of the knock. High or low on the engine. If it is high then it is not as serious and is usually associated with the valve train. Low knocking is the crank and pistons. Ticking sounds are more common and can be something as simple as wear on lifters etc.

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Lifters would tick or rattle. A knock is usually lower in the engine, a rod or piston in most cases. The lifters are under the valve covers.

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How much for lifters on a 1998 izusu trooper? And will that make you engine nock?

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My f150 2004 5.4engine has a knocking noise for about 4 months.

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Experiencing a "ticking" "knocking" type noise when 1st starting the car in colder weather that goes away once the blazer warms up , any help ?? I was told it could be the exhaust manifold , or piston...

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A loud ticking noise?

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My car started ticking should i replace the rod bearings?

Not neccessarily. Have it diagnosed first. The ticking could be many different things. Bearings are one, lifters another or could be not internal engine, may be external. You also need to find out why its doing what it doing otherwise you will waste money fixing something and end up doing it again..

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Lifters rattle when you first crank it up for about 5 mins until warm, Shouldi replace the lifteror wouldbe wasting my money to do so,.It runs great an use no oil 3800 -v-6 in a 2001 camaro, what...

Are you sure that the noise is a rattle? lifters make a ticking noise, pistons, piston pins and bearing rattle, lifter tick goes away in seconds, piston and bearing related noises take longer, and in the case of rod bearing not at all, it sounds like you may have piston noise, and in that case I would not worry about it, I would run a few cans of combustion chamber cleaner with you next 2 fill ups, carbon build up on the the # 1 piston ring land can cause the piston to "rock" in the cylinder and make a rattle type noise. I have a 1996 Corvette that has a rattle, it is a piston, GM checked it and told me not to worry about it, of course that advice cost $50.00. Also this type of noise is common to the later production 3.8L V6. Hope this sets your fears of a large repair bill to rest, just drive it, but make sure you use the correct oil and change it when recommended.

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