('06-'08) MY '07 X Possible fuel supply issue? - Subaru Forester Owners Forum
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post #1 of 12 (permalink) Old 03-08-2012, 08:50 AM Thread Starter
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MY '07 X Possible fuel supply issue?

Hi all.
Thus far, this has only happened twice, but twice is enough to bother me. Over the past month I have had to actually step on the gas pedal to get the car to start. Usually it's turn the key and that's that obviously. I uses Shell fuel exclusively and buy from the same 3 stations all the time so I doubt it's an actual fuel issue. I did a search of the forum and found nothing of this kind so far. Hoping it's not the beginning of a fuel pump failure? Any thoughts?

'07 X 2.5 EAT

Last edited by garyg7133; 03-08-2012 at 08:50 AM. Reason: Jacked up typos :P
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post #2 of 12 (permalink) Old 03-08-2012, 09:40 AM
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I have some questions.
  • Do you have a CEL, if so, what code(s) is it?
  • Have you tried cleaning the MAF sensor?
  • How many miles on your '07 & is all the recommended maintenance up to date?
Bobby...

['07 FSXT MODding Journal] ['03 X MODding Journal]

'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
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post #3 of 12 (permalink) Old 03-08-2012, 09:45 AM Thread Starter
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Hey Bobby. I am at 56k on the odo and no CEL. I have a pretty good service history before I bought the car and I've been on top of everything since I bought it last february. May as well add that the 2 times that it happened, once was in my driveway (incline) and the other was on the street (level surface).

'07 X 2.5 EAT
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post #4 of 12 (permalink) Old 03-08-2012, 10:12 AM
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The MAF sensor is very easy to clean, so if you haven't cleaned it, I'd give that a try.

Bobby...

['07 FSXT MODding Journal] ['03 X MODding Journal]

'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
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post #5 of 12 (permalink) Old 03-08-2012, 10:20 AM Thread Starter
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Thanks Bobby. Supposedly going to get some decent weather so I will give it a shot and let ya know. Figure while I'm under the hood I'll clean the throttle body as well. Maybe nose around a little and see if there is anything else in need of attention. What do you recommend cleaning it with?

'07 X 2.5 EAT
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post #6 of 12 (permalink) Old 03-08-2012, 11:07 AM
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You can use a MAF cleaner (CRC makes some) or isopropyl alcohol (rubbing alcohol). If you end up using a non-aerosol liquid, just pour some into a clean zip-lock plastic bag. Seal the sensor in and shake the bag by gripping the sensor housing. If you use an aerosol, just spray (gently!) inside and out. Make sure you don't poke anything inside, or you could damage the sensor!

Bobby...

['07 FSXT MODding Journal] ['03 X MODding Journal]

'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
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post #7 of 12 (permalink) Old 03-08-2012, 02:20 PM
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Check your plug condition and gap also. I know this sounds simple, but in cold conditions it can make a big difference in starting.
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post #8 of 12 (permalink) Old 03-09-2012, 04:38 AM Thread Starter
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Thanks guys. Will be under the hood over the weekend and update with any findings :)

'07 X 2.5 EAT
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post #9 of 12 (permalink) Old 03-09-2012, 06:36 AM
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I would think since he's HAVING to press the accelerator that it could be an injector problem as well.... But then again, the car/engine would rock when running

Paul - 2007 FXT
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post #10 of 12 (permalink) Old 03-09-2012, 08:36 AM Thread Starter
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Quote:
Originally Posted by pzr2874 View Post
I would think since he's HAVING to press the accelerator that it could be an injector problem as well.... But then again, the car/engine would rock when running
Thankfully it does not. Last thing I want to do is replace an injector right now...

'07 X 2.5 EAT
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post #11 of 12 (permalink) Old 03-09-2012, 04:21 PM Thread Starter
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Ran out during my lunch break and did a quick cleanup of MAF sensor. Couldn't be as thorough as I would have liked, but there isn't much to it either. Noticed a difference in the motor on the way home so at least I know it made some difference. Will see if it happens again now and at what kind of interval. Temp is supposed to drop so I can hopefully rule out any kind of cold start issues.

'07 X 2.5 EAT
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post #12 of 12 (permalink) Old 03-30-2012, 05:38 AM Thread Starter
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Cleaned the sensor on the 9th and have not had the problem since then. All good so far. Thanks again for the input !

'07 X 2.5 EAT
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