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Possibly, a misfortunate cat sleeping under the hood. This bang is probably a loose engine mounting bolt. The noise is probley from bad rod bearings once the oil pressure is up they quiet down.After it sits a long time(over night) the oil drains down and will be noisy It may last a long time just make sure the oil level is good

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Q: What is the cause of loud noise when the engine starts the first time of the day?
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Why is my 1999 gmc suburban jerking making a loud noise.?

If the 1999 Suburban noise is a sort of loud banging noise, the problem could be that the engine have jumped time. Jumping time would cause the noise and jerking in the engine.


Why wpould you hear a whining noise from your car only when gear engaged and accelerating not while coasting etc not really any noise on deceleration either it is an automatic transmission?

Friction in the transmission system may cause whining noise when a car is accelerating. A poor engine or clutch assembly may cause the excess friction in the transmission system.


What is wrong with Mazda Tribute if it makes loud rattling noise when accelerating?

Many different things can cause a rattling noise in a Mazda tribute. Stark by checking the engine belts and all brackets for anything that could be loose and causing a rattle.


What will cause roller lifters on a 1996 Chevy Z-71 Vortec to tap on cold starts?

I would not worry to much about this noise when the motor is cold; engines have clearanaces that come together at operating temperature. If this noise happens when the motor is at operating temperature then you might have a problem.


What does bent rods sound like on a 350 engine?

If you are talking about the PISTON RODS then they will not make any noise. The engine will just wear the pistons and cylinder walls until you have a problem with oil comsupition. If the push rods or bent then you will have a engine miss and rocker arm noise in the valve covers/ clatting noise.

Related questions

What causes a ticking noise after the car first starts then goes away?

The engine parts are rubbing until the engine oil pressure builds up and the oil starts to lube the parts. Old oil, wrong viscosity, or a clogged filter can cause this to be worse than necessary.


Valve train noise big block Chevy when hot?

Engine running hotter then 220 degrees can cause valvetrain noise. Bad fuel can also cause valve noise / PINGING sound. Ignition timing to high / Advanced to far, can also cause engine noise.


Can a bad harmonic balancer make a knocking noise?

A bad harmonic balancer can cause a knocking noise. The harmonic balancer doesn't actually produce the noise, but it can cause the noise in the engine.


What would cause juddering noise on car?

cold engine


Can bad fuel filter cause rattling noise in the engine?

No


What could cause a whistling noise while running air conditioning?

A bad compressor belt can cause a whistling noise while running the air conditioner. A bad engine can also cause this noise.


Is the LEAST LIKELY to cause an engine noise?

Perhaps a bug on windshield.


Is tappets cause of noise on top of peugeot 207 engine?

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Why is my 1999 gmc suburban jerking making a loud noise.?

If the 1999 Suburban noise is a sort of loud banging noise, the problem could be that the engine have jumped time. Jumping time would cause the noise and jerking in the engine.


You jump the car then it starts Making a noise like a fan running after you cut the engine?

When you can not figure out why your car makes a strange noise, you take it to a mechanic.


What would cause a clunking noise and judder from the drivers side of your engine?

Have someone check your Engine mount


Engine noise between first and second gear?

turn the engine off