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Belt Pulleys or Timing Chain. How can a tell for sure? 

 

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 Post subject: Belt Pulleys or Timing Chain. How can a tell for sure?
Posted: Tue Dec 26, 2006 2:52 pm 
Smokin em up
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Ride: EBII Fairmont 4.0 206rwkw

Location: Adelaide
SA, Australia

Hey guys, a noise has developed on my EB 4.0l. I'm hoping its just a belt pulley, but it could also sound like a timing chain kinda whirring. I'm finding it hard to pin point. The noise i a squelling, scraping sorta noise coming from the front of the engine.
Fast replies would be greatly appreciated. Trav.

 

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Last edited by Trav 4.0 on Tue Dec 26, 2006 3:02 pm, edited 2 times in total.

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Posted: Tue Dec 26, 2006 2:57 pm 
Getting Side Ways
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What car?

Could be a pulley bearing.

Take the belt(s) off and see if it goes away.

 

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Posted: Tue Dec 26, 2006 5:05 pm 
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2 acurate options:
1) take off the serpentine belt and spin each pulley.
2) i took my EF to ford and asked them to have a listem. they have like, a long needle on the end of a stethoscope that they can use to listen to vibrations. told me it was my idler and tensioner gone....
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Posted: Wed Dec 27, 2006 8:17 am 
Getting Side Ways
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i have this problem in my el, it sounds more like from under the front of the rocker cover itself, ive been told its a stretched timing chain. ive also changed the pullies, for no effect...

 

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Posted: Wed Dec 27, 2006 8:22 am 
Getting Side Ways
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elvondel wrote:
2) i took my EF to ford and asked them to have a listem. they have like, a long needle on the end of a stethoscope that they can use to listen to vibrations. told me it was my idler and tensioner gone....


ABW make them, can get them through Auto stores like Repco or Bursons, for not much at all. There a good bit of gear, I've used mine a few times.

To rule out the pulleys/belts, remove the belts, and run the car (obviously not for long as your water pump isn't turning). If no noise then it is the belts/pulley.

If it's anything like mine then it is probably the timing chain on the guide.

 

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Posted: Wed Dec 27, 2006 11:51 am 
Fordmods Junkie
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yeah that stethiscope is cool, fun to listen to the inner working of your motor.

i concure with most above me, run the car with no belt hope noise goes away.

 

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Posted: Wed Dec 27, 2006 3:28 pm 
Getting Side Ways
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Location: adelaide
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just been thru a simular exercise with my el and it sounded exactly like a stuffed timing chain or lifters

but took off belt and run and noise dissappeared

idler bearings were stuffed so i replaced - you beauty i thought an easy fix

then murphy jumped in when i reassembled everything - exactly the same niose

so it had to be either alternator /power steering /water pump or air cond compressor bearings

i made my own stethoscope from some 10mm hose and discovered unfortunately the water pump has s**t a bearing
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