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Old 11-27-2008, 05:55 PM   #1 (permalink)
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Default Noisy Engine?

Greetings all, my 98 forester had head gasket replaced at 150,000km. Now I am noticing a very pronounced engine growl between 2300 and 3000 rpm while driving or in park (157, 000km). Things I have tried after reading through the site are, fresh oil and new filter, removing various heatshields, checking muffler for pieces of catalytic, driving slower to reduce higher rpm's (very difficult). I did notice however that there was less engine growl when I took off from a traffic light while the car was on an incline. Not really sure where to go from here and looking for some advice. cheers.
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Old 11-28-2008, 04:39 AM   #2 (permalink)
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Is there a resonator in your intake system?
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Old 11-30-2008, 07:48 AM   #3 (permalink)
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Thanks for the response. Yes, there is a resonator on my air intake if that is what you are refferring to? cheers,
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Old 12-07-2008, 08:17 AM   #4 (permalink)
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are you absolutely certain it is not a heat shield? stainless steel hose clamps from home depot are excellent for securing them. if they feel loose at all then throw a hose clamp on them.
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Old 12-07-2008, 09:03 AM   #5 (permalink)
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Thanks for the responses but the noise problem is deeper into the engine bay and more pronounced on the passenger side. I hear a change of pitch from the engine above 2000 rpm. I thought maybe manifold bolts loose from the head gasket repair but bolts are tight. Any thoughts?
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