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Old 05-14-2009, 16:48   #1 (permalink)
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Need input on noise - 2009 2.5 liters

Hey guys, Need an input regarding a noise on my 2009 4 cyl escape.

The car have 10 000km and in the morning, when I start the car, I have a engine-related noise the first minute or so.

The noise is directly linked to engine speed. In my books it sounds like valvetrain noise but its hard to tell really. Its spring here and its starting to be hot in the day like 20 degrees but its still almost freezing at night. I noticed that the noise is louder and takes a min to go away in the morning when its cold in the night and less when its more moderate outside. I have yet to have a really warm night but last night it was kind of warm and the noise was gone really quick (5 secs of driving).

the noise sound like : pfft-pfft-pfft-pfft..not a direct metallic tapping noise. still not a good noise to hear on a new car.

Now I have 2 therory:

First is that for some reason the oil is not going up in the engine fast enough? When its cold the oil is thicker and maybe theres the link with the temp outside. However I have syntetic 5w20 in there and its not extreme temp either. The oil level is good. Also after a warm day sitting at work the noise doesnt seem there... I understand the car sits like 14-15 hours at night and only 8 hours during the day. Maybe 8 hours is not enough to let the oil drain all in the pan. but is 14 hours enough? And why would it do that? Faulty oil pump?


My second theory is some kind of exaust leak. Maybe until the exaust warms up a little there is a kind of small leak on a joint or something that cause the noise. and that would explain it with the temperature. but can a exaust leak sound so..rythmic with RPM? I dont know.

If anybody wants to chime in or maybe somebody noticed something similar on their model.... My dealer is far off my house and this is the kind of issue thats not super easy to diagnose for them. I would like to have and idea before giving them the keys and leave my beloved truck

thanks ! and have a good day folks
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Old 05-17-2009, 09:29   #2 (permalink)
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Re: Need input on noise - 2009 2.5 liters

I'd bring it to the dealers attention, if anything at least it'll be documented should any concerns arise later on.

Oil should drain back down into the crankcase within an hour after shutdown. Some might say it only takes half an hour. Right when you turn the vehicle off, the majority of the oil goes back into the crankcase, the rest slowly drips down (maybe less than half a quart).

Perhaps there's a gasket leak, as the gasket warms up with the engine, the leak will subside. Valvetrain noise is not uncommon on startup, such like a fast tick sound for a few seconds. To have a 'pfft' sounds, it might be intake or emissions related. Perhaps a bad EGR valve or a hole in the intake. The dealer should be able to put one of those electronic stethoscopes in and around the engine to narrow down the problem. The only downside is that you may have to leave the vehicle there for a couple days so it can be 'off' for that 15 hour period.
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Old 05-18-2009, 06:23   #3 (permalink)
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Re: Need input on noise - 2009 2.5 liters

the 4-cylinder has solid lifters, my former 2.3l was a little noisy above 2500 rpm on cold days untill it warmed up (typically first 2-3 minutes of operation). But if you are under warranty I'd take it in to be sure.
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Old 05-18-2009, 08:58   #4 (permalink)
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Re: Need input on noise - 2009 2.5 liters

thanks for the input.

I think i've nailed the problem to be more temperature related than time related.

This weekend car sat from friday 5pm to sunday afternoon ,it was 12 degrees outside and the noise was minimal and did not last long at all despite the long wait.

I remember this one time when it was -10 in the night and barely above 0 in the morning and that time the noise was VERy easy to heard. Did not sound like a brand new car at all ... but only lasted couples streets. :)

I'm, thinking it could be engine-accessory related too, maybe a bearing or something is noisy until it warms up a little...

thanks for the input
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Old 05-18-2009, 11:24   #5 (permalink)
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Re: Need input on noise - 2009 2.5 liters

Phil, just curious, but do you turn the vehicle on and off with the fan on the 'defrost' setting? If so, this causes the A/C compressor to run and can make some noise, but still shouldn't sound like lifters. Turn the fan to 'off' or on front vent before you start or turn off the vehicle and see if that helps if you're not doing that already. Just a thought.
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Old 05-18-2009, 12:35   #6 (permalink)
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Re: Need input on noise - 2009 2.5 liters

Hey,
Very nice tip, however after reading that when in defrost mode the AC is on, I try to keep it off when I dont need it :)

I also found a way to describe the nosie more accurately. It sounds like I a have a small,quiet diesel engine in there the first minute or so :)


thank you
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Old 06-09-2009, 19:31   #7 (permalink)
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Re: Need input on noise - 2009 2.5 liters

Well the car is at the dealer to have the noise checked out...I doubt they will found anything tho, I dont thrust dealers
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Old 06-11-2009, 21:56   #8 (permalink)
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Re: Need input on noise - 2009 2.5 liters

Shot in the dark, but could it be belt slippage? Any sort of glazing on the belt or the pulleys?

Like I said, "shot in the dark".

My wife's Winnie (3.8L V6), there's slight slippage in the belt (100K Km on the ODO). It sounds like a bearing that's about to fail. But I could see the belt jump when I heard the noise.
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