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Unread 06-03-2007, 06:26 PM   #1
RnEmOvr
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motor noise? with video for sound

my 4cyl motor has been makinga ticking sound for almost a year now (the motor is new just replaced last feb) has less then 40k on it,


details of noise, some times it ticks sometimes it knocks, sometime it makes no noise at all, temp makes no difference, goes up with RPM, sounds like coming from #1 cylinder, no cooling fluid leak, no metal shavings in any fluids, i removed the belt and noise is still there

video

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Last edited by RnEmOvr; 11-02-2007 at 10:08 PM..
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Unread 06-04-2007, 03:12 AM   #2
Jonny Jeep
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Kind of sounds like a diesel. Whats the whistling sound?
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Unread 06-04-2007, 06:54 AM   #3
Raybz
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As dumb as this may sound.....try swapping the waterpump!

My 97 made a tick/knock/ping like that for about a year as well after I did a engine swap. Then the waterpump started leaking from the weep hole, so naturally I changed it out. VIOLA the ticking was/is GONE!
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Unread 06-04-2007, 08:56 PM   #4
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Possibly a loose rocker? I would put a tube up to your ear and use it like a stethoscope to isolate the source.
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Unread 06-04-2007, 09:13 PM   #5
'B'wigstrailrig
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Use a wrench. Itll rattle your ear drum when your on top of the source.x2 on waterpump. Check valve clearence also.
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Unread 06-06-2007, 08:58 PM   #6
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ive tried the stethoscope idea and i know its some where in the front of motor but couldnt narrow it down anymore then that,



and jonny the wistle is from where its in 4lo
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Unread 06-07-2007, 01:43 AM   #7
Jonny Jeep
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Is the four cylinder is engine chain driven like the six? If so you can try removing the drive belt and seeing if it still makes the noise. That would reveal if the noise is from something that is driven by the belt including the water pump as suggested above.
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Unread 06-07-2007, 02:26 PM   #8
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Quote:
Originally Posted by Jonny Jeep
Is the four cylinder is engine chain driven like the six? If so you can try removing the drive belt and seeing if it still makes the noise. That would reveal if the noise is from something that is driven by the belt including the water pump as suggested above.
if i understand you correctly your saying remove the drive belt, and thus narrowing down if its motor or an external accessory like water pump?
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Unread 06-07-2007, 02:54 PM   #9
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Got it in one! Obviously you will loose power steering so if you drive enter corners slowly, and cooling so don't run it for too long.
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Unread 06-12-2007, 10:42 AM   #10
RnEmOvr
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ok so i removed the belt and started it up, it is comin from the motor, cyl 1 or 2, any more ideas?
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Unread 06-12-2007, 12:42 PM   #11
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Worn crankshaft bearings? Anybody else got other/better ideas?
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Unread 06-12-2007, 03:54 PM   #12
Ole Yeller
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Well, it sounded like an exhaust leak to me. Not good sound though.
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Unread 06-12-2007, 03:58 PM   #13
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Quote:
Originally Posted by Jonny Jeep
Worn crankshaft bearings? Anybody else got other/better ideas?
how could i check that?


Quote:
Originally Posted by Ole Yeller
Well, it sounded like an exhaust leak to me. Not good sound though.
there is a small exhaust leak but that would cause the knocking like that would it?
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Unread 06-15-2007, 07:37 PM   #14
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any more options?
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Unread 06-15-2007, 07:45 PM   #15
87warrior
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If the 2.5 has a timing CHAIN that could be it... I streached a timing chain on my 4.2 several years ago and made a simular noise.

When you listen for the noise in a wrench or crowbar, can you narrow it down to the Valve Cover, Head, Block, or Oil pan?
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