2000 Subaru Forester

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My mom has a 2000 Forester. Lately, when she takes off, the car seems to struggle, sputter and bog. That lasts for only a couple of seconds until the car gets going. It's almost as if the car is about to die, but then YAY it just keeps going.

My parents have taken the car into Mike Shaw Subaru quite a number of times to get various things fixed. They've had to replace the rear axle/cv joint twice already, and some other shit. The thing that pisses them off, is that it seems that every time they go to get something done, something else that wasn't even a problem goes wrong. It's almost like they are sabotaging our car at the dealership. I doubt that's the problem, but it still seems like it. Can anyone help?
 
Carbon build-up. The Boxers are very intolerant to piston crud. Run a two tanks of high test through it and it should clear up.

Also, Blow that fucker out ! Take it out on the highway for a pedal-to-the-metal run to 120. Even fuel injected cars can get loaded.
 
Why would you waste the money on high-test? That won't do a damn thing.

If carbon buildup is really the problem, just buy some injector/engine cleaner (BG 44K if you can afford it, or the $5/bottle stuff if you can't) and use it before a full-tank fillup.
 
All grades of gasoline have the same level of detergent, if we're speaking about one company in particular. Different companies may have different levels of detergents, though.

http://www.mobil.com/USA-English/GFM/Produ...asoline_FAQ.asp

http://www.arcogas.com/gas/faqs.php#9 (ARCO gas)

http://www.stretcher.com/stories/960909c.cfm (this guy seems a little whacked, but he supports the same position)

http://www.epa.gov/otaq/regs/fuels/additive/fact7gda.htm (just says that all gas must have detergents, doesn't talk about octane)
 
Yeah, different ratios of detergent. These companies have patents and the like to work around.

But I say try the high octane thing once or twice. It worked for my Civic when I Was doing traffic for 4 straight tanks, and the car started bogging.
 
The #3 spark plug had a small crack in it, and got pretty fouled up. We changed all the plugs, and now it runs WAY better. :thumbsup: :thumbsup: I'll still tell my dad to try the high octane thing.
 
oooo cracked plugs are EVIL. It was the ultimate downfall of the Tracker. Heat built up, it exploded. Cleaned it up as best as I could, put the new plug in it and it stripped like butter. Sent the truck off for a re-tap, and it came back with no compression in the #4. Which I have to work on now.

-> Steve
 
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