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Engine rattle at start up

When the engine is started from cold there is a metallic rattle from the lefthand side of the engine.

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6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: 2004 tacoma double-cab metallic rattling when cold

It has been suggested to me the problem could be a belt tensioner gone bad. Sound right to anybody?

Posted on Nov 27, 2008

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ameliorate
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SOURCE: I have an Isuzu Rodeo 3.2 L when the engine is

if you dont plan on rebuilding the motor then just put some thicker oil in it!

Posted on Jul 16, 2009

Mr BrokRench
  • 1623 Answers

SOURCE: 04 murano right side engine rattle

Hello windy....There are a few thing on the murano that could cause this... one is the exhaust gussets that go to the bottom of the oil pan to the exhaust, they can crack and cause a rattling noise. Also I have seen the rear exhaust heat shield spot welds come loose and cause a rattling noise, from exhaust manifold down pipe on the cat. converter. I would check them first, also the park brake cable will lose tension and rattle on the undercarriage.
A more serious problem would be the timing chain and/or chain tensioners...these are known to make noise around 50-60k. The tensioners are operated from oil pressure, the face gets worn, the chain stretches and it results in a rattle or a slapping noise
Useing a full synthetic oil with regular maintaince will help prevent premature wear.
Good luck, i hope this helps..please rate me a fixya.

Posted on Jul 31, 2009

  • 4357 Answers

SOURCE: During a cold start, I have a noisy rattle coming

Sounds like a timing chain issue, eventually the tensioner builds enough pressure to quiet it. Also check all chain guides, they get damaged with chain noise like what you describe.

Posted on Sep 25, 2009

  • 1752 Answers

SOURCE: metallic rattling sound after starting engine.

There's a little piece of aluminum called a heat shield that's loose. You can bang it back in place with a hammer.

Posted on Oct 29, 2009

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1 Answer

I have a rattle from the front end of the engine thought it was my fan belt tensioner wheel changed that and its still there took fan belt off so no other equipment running and its still there only there...


look for any metal or plastic cover/protector for casing of parts/ moving parts or the radiator fan casing rattles are majorly caused by poor bolting of parts or cracked parts. . best to do this with a stick and to dip in the parts with caution and see if rattle disappears. hope this helps..

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My 2004 Prius has a rattling metallic sound on acceleration. It is coming from the top of the engine on the passenger side. Does anyone know what this can be?


Does the car make this sound when the car has just been turned off and engine is still hot? Lightly push the car back and forth while it's in park. Does it still make that sound?

Sep 23, 2012 | Cars & Trucks

1 Answer

Rattling/clinging when car is cold. Stops soon after.


not the water pump as the noise will remain constant hot or cold
you leave very important details like make . model , year and engine type petrol or diesel so answering becomes a hit and miss affair
if the engine has a timing chain it indicates that the hydraulic adjuster is loose until oil pressure is built up which equates to a badly worn chain
next if an incorrect oil filter was used , the oil will drain back over night and , chains, rockers, hydraulic lifters will all rattle until pressure is built up
incorrect oil viscosity will drain down quickly and will take time to build up pressure as well
you may have to find an accredited service shop and leave it there over night so that the diagnosis can be made in the same conditions for them as for you and then get a quote

Jul 27, 2017 | Cars & Trucks

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My Audi A4 2009 makes a rattling noise on cold starts which resolves in less than 30 seconds. Dealer says its an air pump. This doesn't seem correct. The noise comes from the front of the care. Does not...


READ THIS (happy ending so far...):
audi a4 2L turbo quattro, manual transmission with 98,000 KM. Perfect conditions, no oil leaks whatsoever.

Left the car off for two weeks in very cold weather (-10C down to -25C). When I restarted, it started immediately but with heavy rattling noise due to camshaft adjuster not getting enough oil pressure. After 3 minutes of warming up (outside temp.: -12C) at very low rpm (below 2,000rpm), I start moving the car. Still hearing heavy rattle noise. As soon as I pass 2,000 rpm, I get a scary red warning, low oil pressure. Turn off the engine immediately. In 1 minute, I re-start the car and the engine lights check ok, so I drive in first gear super slow (1,200rpm) hearing the same rattling noise. After another minute, finally the noise all the sudden disappears and the car starts running just fine.

Called Audi dealer and they told me that in extreme weather conditions, I should warm the engine for 10-15 minutes if necessary before start moving.
Take away: luckily, I didn't screw up the engine since I was using it at extremely low rpm (easy to do with clutch and manual transmission) until the oil reached full pressure. I am pretty sure now that the problem was leaving the car off for such a long time in freezing weather. All the oil flows back to the bottom, and when I restarted it, the cold oil with high viscosity took a long time to reach all the parts of the engine, specially the camshaft adjusters that are actuated by using oil pressure. Next day, the car started at -9C perfectly without making any noise (as usual). Basically, the longer you leave your audi in cold weather, the longer you might hear the rattling noise until the oil reach full pressure inside the engine. My car took 6 minutes to fix it after couple of weeks in cold weather. This makes sense to me; in fact, in the past I only heard the rattling noise after leaving the car off for a couple of days in the winter.
So far, this has had an happy ending....

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Dec 19, 2010 | 2009 Audi A4

1 Answer

Enigne wont start after it died on road


fine metal shaving means major engine damage, time for a tear down , start with the oil pan, find metal in there which you will, the damage is extensive, time for a rebuilt

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Loud instant 2-3 second rattle around the under


Check all braces under your car. Not just visually, put hands on each and every brace. Sounds like one might be loose or broken. Hope it's as easy a fix as mine was.

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I have a 2001 Ford ranger supercab that makes rattling noises. It has a 4.0L SOHC. It makes a very fast and loud metallic rattle wich softens anfter about a second or so when I first start it for the day....


4.0l's are notorious for valve rattle on cold start-up. There is really nothing you can do to make it go away short of completely replacing the valve train in the top end, and that isn't a permanent fix. It's is an top end oiling issue from the factory. Just don't race your engine on cold start-up until the rattle stops.

The rattle in the transmission sounds to me to be more of a loose dust shield/heat shield around the transmission or exhaust than a mechanical issue.

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possibly the cat itself broken up and rattling in side the silencer especially if more noticeable when engine warmed up.

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2004 tacoma double-cab metallic rattling when cold


It has been suggested to me the problem could be a belt tensioner gone bad. Sound right to anybody?

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