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1991 EB Fairmont 5.0lt V8. load noise when running... 

 

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 Post subject: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Tue May 04, 2010 8:29 pm 
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Hi All, I have a 1991 EB Ford Fairmont 5.0lt V8, when I start the car, there is a load noise coming from the right side of the engine, I got under the car and could feel hot air coming out. Not sure if its coming from the exhaust manifold or head gasket.. Checked the oil, all clear, I dod flush the coolant out the other day, looked ok... can anyone help with the probable cause... cheers..
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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Tue May 04, 2010 8:31 pm 
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hi there, welcome to fordmods.

id say youd have a leaking exhaust manifold... good excuse for some extractors :twisted:

 

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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Tue May 04, 2010 8:33 pm 
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Is it a loud ticking noise?

 

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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Tue May 04, 2010 9:24 pm 
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hi,ye its a loud noise, ye its a ticking noise, well not so much ticking but sounds more like air pfffffff... I can feel hot air coming out from somewhere...
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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Tue May 04, 2010 9:46 pm 
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from where i can feel the hot air coming out between the exhaust manifold and head gasket, there is no sign of any liquid leaking anywhere... today i took off the exhaust manifold and it looks ok... is it possible for the head gasket to leak hot air...
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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Tue May 04, 2010 10:08 pm 
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Check rear of RHS head.. There is an EGR exhaust port there..
It should be blocked off...Maybe a head from left side has been fitted on right ??
Where the power-steering bolt blocks off port on left head..
Check EGR near throttle body...
This port here .. I use it to check back pressure on turbo engine..
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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Tue May 04, 2010 10:45 pm 
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sorry what do u mean left head maybe fitted to right side... u mean the cylinder head..??
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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Wed May 05, 2010 9:09 pm 
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nighlord1 wrote:
sorry what do u mean left head maybe fitted to right side... u mean the cylinder head..??

Cyl head as in pic...

 

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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Thu May 06, 2010 2:20 am 
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The exhaust manifold looked ok, but what about the gaskit that come off? Usually if an exhaust gaskit has leaked, you will see it - around the ports that don't leak will be a small carbon ring, the port that leaked will usually leave traces of carbon from the port to where it was leaking.

A little hard to explain in words, but if you look at the gaskit you may see what i mean.

Cheers

ToranaGuy

 

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 Post subject: Re: 1991 EB Fairmont 5.0lt V8. load noise when running...
Posted: Thu May 06, 2010 11:18 am 
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hi, just had a look at the exhaust manifold gasket, looks ok from what I can see.. But I have just noticed looking at the lower part of the cylinder head, there are 5 bolts that run along the bottom of the head just below where the exhuast manifold bolts into the head, well I've noticed that 2 of the 5 bolts, the heads of those bolts have come off at some point, could this be causing the probs... thanks
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