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Blow-By Problem? Time to move on from the PT?

 
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Old 03 Aug 2013, 11:16 am
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Unhappy Blow-By Problem? Time to move on from the PT?

122k Miles on my husband's 2005 PT Cruiser 2.5L Turbo (his daily 50 mile round trip commuter). The last 60k miles are ours as we've traveled cross country and moved as the military dictates. Sucking gas, running rough, and riding horribly. Suspension shot. Discovered evidence of major internal oil leak and the mechanic called it a "blow-by problem". Suggests what I think sounds like a tune up, plus a PCV valve and claims the valve will fix the blow-by problem. With the knowledge that the oil light has come on at least once in the last few months, family friend mechanic suggests the engine is likely done for.

Doing it myself is not an option due to my current health. Getting help to get it done would require either being put in touch with someone here in northern California to who knows what they are doing and willing to help or getting it to northern Arizona (with an infant and toddler along with me.) To complicate things further, we sold my SUV in preparation for husband's deployment so this is now our only car.

The shop wants about $1600 for the engine and suspension issues.
$250 for the engine and the rest suspension work.

Bit of a long story - bottom line is that we need to decide:
1) Is it worth fixing - keeping in mind we cant do the work ourselves? If we fix it, is it reliable as a family vehicle to travel cross country (pulling a 4x6 trailer) or should it be considered an in town car only? Is our gas mileage problem going to be fixed? If it continues to get crappy gas milage how much to fix that issue.

2) If it's not worth fixing, can we get any $$ for it, and how much? We own it free and clear. It has simple modifications like new tail lights along with a newer stereo system and new speakers and integrated blue tooth and a few other things. Done all the major maintenance stuff - timing belt etc.

Thanks for any help! Sorry for being longwinded.
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Old 03 Aug 2013, 12:26 pm
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Default Re: Blow-By Problem? Time to move on from the PT?

The PT is not known for it's gas mileage , but especially since it sounds like you need a simple tune-up ..... Not sure who's quoting you big big bucks, and what they mean by it sounds like it's shot ? Starting with a very inexpensive and easy PCV, I'd try that.. ( It's thread out, thread in ) or do what I did, soak it in paint thinner and free it up that way, dry it off and out good and re-install...
..
From there move on to plugs and wires if necessary .. I wouldn't be surprised if that's all you need.....
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Old 03 Aug 2013, 12:37 pm
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Default Re: Blow-By Problem? Time to move on from the PT?

Agreed with above. Do a tune up first. These engines will go 200k + with regular maintenance. Although, if you haven't had the timing belt / water pump done, that should be 1st on your to-do list.

Ride problems are probably related to worn out struts. At 122k, they're probably due for replacement as well.

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Old 03 Aug 2013, 03:06 pm
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Default Re: Blow-By Problem? Time to move on from the PT?

Blue... 122k is not high miles. You might have a turbo problem though. Have someone remove the intercooler hose and see if oil is leaking into the hose. If you remove the hose from the air filter, you can also check to see if oil is on the compressor side.
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Old 03 Aug 2013, 03:46 pm
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Exclamation Re: Blow-By Problem? Time to move on from the PT?

I've heard the 2.5 engines In the pt are the best, they are very rare
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Old 03 Aug 2013, 06:11 pm
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Default Re: Blow-By Problem? Time to move on from the PT?

PCV valves
Do not in anyway control oil!
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Old 03 Aug 2013, 07:06 pm
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Default Re: Blow-By Problem? Time to move on from the PT?

Quote:
Originally Posted by NitroPT View Post
PCV valves
Do not in anyway control oil!
No, but if they stick open, they'll allow the engine to blow oil... More pronounced on a Turbo Engine.
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Old 04 Aug 2013, 12:40 am
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Default Re: Blow-By Problem? Time to move on from the PT?

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Originally Posted by TurboDucky View Post
No, but if they stick open, they'll allow the engine to blow oil... More pronounced on a Turbo Engine.
If a PCV valve sticks open in a Super Charged or Turbo Charged engine you will not gain full boost pressure and the breather side of the PCV valve system will be less effective.

If by blowing oil you are referring to a crankcase when the reciprocating assembly builds pressure and can't vent properly you possibly could get blowby past the compression rings and valve guides.

A PCV valve only controls air , the baffles in the valve cover help control oil which in a none vaporized state may be drawn by vacuum into the inductive system through a PCV valve.

Some of you should really learn what and how the PCV system works?
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Last edited by NitroPT; 04 Aug 2013 at 12:45 am.
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Old 04 Aug 2013, 06:43 am
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Default Re: Blow-By Problem? Time to move on from the PT?

Quote:
Originally Posted by NitroPT View Post
If a PCV valve sticks open in a Super Charged or Turbo Charged engine you will not gain full boost pressure and the breather side of the PCV valve system will be less effective.

If by blowing oil you are referring to a crankcase when the reciprocating assembly builds pressure and can't vent properly you possibly could get blowby past the compression rings and valve guides.

A PCV valve only controls air , the baffles in the valve cover help control oil which in a none vaporized state may be drawn by vacuum into the inductive system through a PCV valve.

Some of you should really learn what and how the PCV system works?
"A PCV valve only controls air, the baffles in the valve cover help control oil which in a vaporized state may be drawn by vacuum into the inductive system through a PCV valve."

That's what I was saying.
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Old 04 Aug 2013, 07:36 am
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Default Re: Blow-By Problem? Time to move on from the PT?

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Last edited by rob342; 04 Aug 2013 at 07:40 am.
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