Question: Why is my VW engine rattling?

Volkswagen Engine Rattle Not Just a Noise But a Serious Problem. … The sound is a rattle that is heard just after the engine is started. The technical background on this issue is that the timing chain tension has lost its ability to keep the tension and the slack causes the rattle in the engine.

Why is my Volkswagen making a rattling noise?

The most common reasons a Volkswagen Jetta has a rattling noise are the ball joints, struts or strut mount, or a problem with the sway bar links.

Why is my engine making a rattling noise?

One common problem that will cause a rattle at idle is a failing hydraulic valve lifter. The lifters are small parts that open and close the engine valves, activated by oil (hydraulic) pressure. … If you hear a “clack-clack” kind of rattle when you start your car’s engine, it could be a sign of piston slap.

Is a rattling engine bad?

The most common engine rattling at idle isn’t an engine problem at all. … When it begins to break down, little chunks break off and rattle around inside. It’s most noticeable at idle. Left unrepaired for some time, the catalytic converter will cause running problems as it gets plugged up, plus you won’t pass a smog test.

Can low oil cause rattling?

low engine oil level

if the oil level gets too low, you can have a situation where the oil pump sucks air into it and the air gets pumped through the engine along with whatever oil is remaining. this can cause a rattling or ticking noise from within the engine.

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When I accelerate my car makes a rattling noise?

Rattling noises when accelerating can be caused by low fluid levels in the A/T. Open the hood and check the fluid level. If the car is running low on transmission fluid, refill the reservoir to the proper level. After doing this, start the car and take a short test drive to see if the problem goes away.

What does a blown motor sound like?

You’ll know your motor has blown if there is a very loud noise. It can sound like a bang or a very loud knocking noise. If the engine is completely seized or you see smoke billowing out, that’s also a sign that it’s blown.