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Intermitent big end rattle from start up - Range Rover Land Rover Cars & Trucks

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Check the exhaust system, this is the most common source of start-up rattles

Posted on Sep 09, 2008


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Oil got to be 1.5 qts low and started rattling. Changed oil, still rattles until car warms up. Doge Durango 2004 8 cylinder, 143,000 miles.

New big end and little end bearings will stop that. You ran out of oil and is now a very worn old engine.

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Check sway bar bushings for tightness and make sure the rubbers arnt cracked or missing I personally go through bolt check everything

Jul 23, 2012 | 1996 Jeep Cherokee Country

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'97 camry makes a rattling noise under the hood it is so embarassing. The noise starts as soon as the car is started and never stops, the noise increase when i accelerate. After i get to my destination i...

It does sound like one or more of your big end bearings has failed. Your valve clearances are more of a light sounding rattle, and don't usually give trouble unless the engine has become sludged. Camrys can suffer sludging if oil changes are neglected.

To get some idea what is wrong, have a mechanic remove the oil pressure sensor and insert an oil pressure gauge. You should see (when hot) about 10 psi per 1000 RPM or so. If this is down, you have bottom end bearing trouble.

Jul 31, 2017 | Toyota Camry Cars & Trucks

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Rattle and klunky noise over bumps Started on the driver front now both sides

Its a big possibility that you have a set of bad struts on you front end.Also take a look at your lower ball joints to see if they are damaged any.

Mar 10, 2011 | Dodge Magnum Cars & Trucks

1 Answer

Oil gauge works intermitently. When not working, engine gets louder/rougher and starts to make rattle sounds. Oil pump?

If your oil level is ok, then it's probably the pump. Driving the vehicle when the oil pressure drops can cause serious damage inside the engine. Need to repair as soon as possible.

Dec 27, 2010 | Ford F-150 Cars & Trucks

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Hi, i have a toyota fielder 1.8cc with a some problem which has now come up. when i switch on esp in the morning after staying overnight, it produces some really annoying sound from the engine. when the...

If it is a 'squealing' noise it's probably the alternator/power steering drive belt. Before you turn on the engine in the morning, lightlt smear or spray some oil on the inside of the drive belt to lubricate it. If the squealing stops/disappears, then that's the fault ..

That squealing noise can be caused by an incorrectly tensioned belt, or a worn belt. Replacement is the only option.

The other frightening sounds can best be described as 'rattles' or 'tapping'. When a car stands overnight all the oil drains back into the sump (oil/pan).

There are two things (usually) that can be cause the rattle/tap:
1. Because the oil hasn't been pumped around the system, at start up worn big end bearings can rattle and tap on the crankshaft until the oil 'fills the gaps'. The tapping/rattling goes away as the engine warms and oil is pumped around the lubricating system.

A 'bottom end tapping' is a symptom of worn big ends (they are bearings at the bottom of the piston and fit around the crankshaft).

2. A rattle/tapping from the top of the engine can either be a worn camshaft or 'lazy tappets'. Again, when the engine warms and oil gets to the camshaft and tappets (also called 'hydraulic lifters) the noise will disappear.

If your car has this rattling/tapping noise - identify whether it is coming from just under the rocker box (ie the camshaft/tappets..) or the bottom end of the engine (big end bearings).

If the noise is coming from the top of the engine, try an oil change with a can of thick 'additive' included. A lazy tappet (lifter) isn't too much to worry about. A worn camshaft will affect the performance of the engine, though continue to do its job. An oil change with an additive included may help in quitening things down.

A bottom end tap/rattle (or 'knock') - the sooner that is sorted out the better.

Aug 16, 2010 | Toyota Corolla Cars & Trucks

1 Answer

Big end

I suggest having the engine rebuilt.

Nov 26, 2008 | 1983 Ford Fairmont

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