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Subaru Forester Engine problems

310 messages,  Last post on Dec 03, 2009 at 7:05 PM

You are in the Subaru Forester Maintenance & Repair Forum. Your Host is kcram

What is this discussion about? Subaru Forester, Engine, Wagon


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#142 of 310
Re: 04 forester gaskets [comendatore] by p0926
Nov 14, 2007 (6:25 am)
Reply

Replying to: comendatore (Nov 12, 2007 12:11 pm)

Although resources like Edmunds are invaluable in helping owners and potential buyers ask questions and get answers, they do tend to distort the number and magnitude of problems. I've seen where someone said they were considering getting a Forester but that after reading about all the problems, they were having second thoughts.
 
What they failed to realize is that there are a number of factors that contributed to giving them the false impression that the Forester isn’t reliable.
 
Take this topic for instance, it's almost 2 years old and has 140 posts while other Forester topics have had hundreds and even thousands of posts during the same time span. And of those 140 posts, you can figure that well more than half are responding to someone asking a question, so the actual number of head gasket complaints is pretty small.
 
And then as Comendatore pointed out, it’s only natural that just the owners who have problems are going to post in a head gasket topic, there's no representation for all the owners who haven't had any problems. So say 20 owners had head gasket issues, there’s no doubt hundreds of others who haven’t had a problem.
 
Also, the Subaru forum is one of the most active ones on Edmunds with plenty of owners ready to offer advice or opinions which ups the number of posts in the problem topics. This leads to more total posts which can give the impression that there are more problems than there actually are.
 
For comparison purposes, The Jeep Cherokee/Grand Cherokee forum has a total of 12,500 posts while the Subaru Forester has 28,200! Now obviously the Cherokee and GC are way more popular vehicles which also happen to have far worse reliability so clearly all forums aren’t equally active. In fact a while back, I tried to get input to a transmission problem with a Grand Cherokee. Not too surprisingly, I didn't get a single response to my question.
 
All this isn’t to say I’m trying to diminish the problem with the head gaskets. We all want to drive the perfect vehicle and get understandably upset when a supposedly reliable one like the Forester has a problem. But at the same time, it helps to take a step back and look at the bigger picture.
 
-Frank
#143 of 310
Question on smog from the Engine by sam92
Nov 21, 2007 (2:15 pm)
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I just bought a new Forester 2007 2.5 xt limited with turbo engine. It is the last one in the dealer. I found that there are black dust in the exhaust pipes, not as clean as my 2005 toyota matrix.
 
Is it normal? How could I fix it?
 
Thanks
  
#144 of 310
Re: 04 forester gaskets [p0926] by tidester HOST
Nov 22, 2007 (12:02 am)
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Replying to: p0926 (Nov 14, 2007 6:25 am)

Those are good points - thanks for taking the time to spell it all out!
 
tidester, host
SUVs and Smart Shopper
#145 of 310
Re: Question on smog from the Engine [sam92] by tidester HOST
Nov 22, 2007 (12:05 am)
Reply

Replying to: sam92 (Nov 21, 2007 2:15 pm)

I found that there are black dust in the exhaust pipes
 
That's probably soot which means that your fuel isn't being burnt completely. This suggests that your oxygen mix is not optimal and you should have your O2 sensor checked.
 
tidester, host
SUVs and Smart Shopper
#146 of 310
Re: Question on smog from the Engine [tidester] by aatherton
Nov 22, 2007 (4:53 am)
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Replying to: tidester (Nov 22, 2007 12:05 am)

He said the car was brand new. Maybe the car was started up and stopped a lot, moved around the dealers lot, taken on short test drives, etc. Maybe the engine was not up to operating temperature for most the time it was running, so the ECU was in open loop and the mixture was rich.
 
Before messing with the new engine, he should wipe the soot out of the muffler tip to get a clean surface to view, and begin driving the car normally. He might not see any more soot.
#148 of 310
A problem in a new 2007 XT2.5 by sam92
Nov 21, 2007 (2:19 pm)
Reply
I just bought a new Forester 2007 2.5 xt limited with turbo engine. It is the last one in the dealer. I found that there is black dust in the exhaust pipe, not as clean as my 2005 toyota matrix.
  
Is it normal? How could I fix it?
  
Thanks
#149 of 310
Re: A problem in a new 2007 XT2.5 [sam92] by aatherton
Nov 21, 2007 (5:02 pm)
Reply

Replying to: sam92 (Nov 21, 2007 2:19 pm)

Don't worry about it. The new car has not been driven much, idled a lot, test driven around the block, etc. Probably never been warmed up enough for the ECU to get into the closed loop mode and give the engine the lean running mixture.
#150 of 310
Re: A problem in a new 2007 XT2.5 [aatherton] by paisan
Nov 22, 2007 (8:16 am)
Reply

Replying to: aatherton (Nov 21, 2007 5:02 pm)

I agree, it's been idling around the parking lot for a few tanks of gas. It's probably running rich due to no full warm up cycles. Give it a few tanks of gas worth of normal driving and it'll be fine.
 
-mike
#151 of 310
Re: A problem in a new 2007 XT2.5 [paisan] by aatherton
Nov 24, 2007 (1:28 pm)
Reply

Replying to: paisan (Nov 22, 2007 8:16 am)

But he should wipe the soot out of his pipe with gas. Otherwise it will remain, and he will not be able to see that future normal driving produces no more soot.

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