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Turbo sucking sound

 
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  #1 (permalink)  
Old 28 Nov 2013, 11:48 am
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Default Turbo sucking sound

2005 PT Cruiser Convertible with standard turbo, 95,000 miles

trying to figure out a strange issue, it has happened twice now over the past 5 days.

I hear a sucking sound coming from the engine, like a paper bag is caught in a vacuum cleaner hose. it lasts for about 3 minutes, then a larger sucking sound like the paper bag gets thru the hose and then sound goes away.

what could this be
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Old 28 Nov 2013, 11:55 am
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Default Re: Turbo sucking sound

If your engine is running the same as you are accustomed to it then you should open the hood and carefully examine the air-box,hood insulation and anything that seems out of place to you. You might also pop the air-box cover off and have a look at your air filter. Also check that your PCV line is in connect and that the hose does not have any fractures in it. Although with that you should have experienced a slightly rougher then usual engine idle. Also there is the valve attached to the Turbo itself that has a diaphragm that may be leaking air ? But here again you should have noticed a engine running change.

That's all I can think of off the top of my head?
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Old 28 Nov 2013, 01:49 pm
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Default Re: Turbo sucking sound

engine and power is normal. air box looks good, air filer is K&N and looks good, opened air box and is nice and clean, hose exiting air box is good with not holes or wear. everything is in place. In both instances, it happened on first drive of the day. PCV line is good also

idle is good, gas mileage is good.

any other thoughts??
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Old 28 Nov 2013, 02:17 pm
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Default Re: Turbo sucking sound

Might check the turbo itself. Needs to be fairly cool so you don't burn yourself. Make sure it's not rubbing the sides.
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Old 28 Nov 2013, 03:13 pm
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Default Re: Turbo sucking sound

How do I check Turbo to make sure it's not rubbing the sides
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Old 28 Nov 2013, 06:42 pm
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Default Re: Turbo sucking sound

Quote:
Originally Posted by bheffner View Post
How do I check Turbo to make sure it's not rubbing the sides
Pull the rubber hose that goes to the airbox to the turbo. Check and see how much side play and in and out play. Shake it by hand.
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Old 29 Nov 2013, 09:40 am
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Default Re: Turbo sucking sound

NEW information:

today top speed is 60 mph, lost horse power, lots of blue smoke out tail pipe!!!

idles fine, does NOT miss out, if I rev engine, lots of blue smoke, if I try to go above 60 lots of blue smoke

its not running hot..



HELP!!!!!!
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Old 29 Nov 2013, 10:21 am
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Default Re: Turbo sucking sound

From the Internet....

Blue Smoke From Exhaust

http://volvospeed.com/vs_forum/topic...t-the-exhaust/

http://www.audiforums.com/forum/b5-m...xhaust-150354/

'03 PT Cruiser GT 2.4L Turbo Loss of Power and Thick White Smoke Out Of Tail Pipe
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Last edited by CREWZIN; 29 Nov 2013 at 10:25 am.
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Old 29 Nov 2013, 11:00 am
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Default Re: Turbo sucking sound

Quote:
Originally Posted by bheffner View Post
NEW information:

today top speed is 60 mph, lost horse power, lots of blue smoke out tail pipe!!!

idles fine, does NOT miss out, if I rev engine, lots of blue smoke, if I try to go above 60 lots of blue smoke

its not running hot..

HELP!!!!!!
I have no experience with a PT turbo. But if this was a big truck, those symptoms would indicate a bad turbo bearing and seal.

Basically, on a big truck the turbo would be blown. That's the loss of power. And the blue smoke is likely oil from the turbo's oil supply line being blown into the turbo due to a failed seal. On big trucks, this is all usually due to a bad bearing in the turbo. And it means the truck needs a rebuilt turbo.

Things may be a little different in a little bitty 4-cylinder Chrysler engine, but it's the same principle. Someone here on the forum with specific knowledge of the little PT turbo will need to confirm this.
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Last edited by Handy_Cruiser; 29 Nov 2013 at 11:02 am.
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Old 29 Nov 2013, 11:08 am
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Default Re: Turbo sucking sound

Check the simplest part first, PT Cruisers are know for eating insides of PCV valves. If it is I have product tested and found the Airtex brand PCV valve to be the one that seals the best.
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