Sputter no Start 2002 OB 3.0 - Subaru Outback - Subaru Outback Forums
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post #1 of 3 (permalink) Old 01-15-2010, 09:08 PM Thread Starter
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Sputter no Start 2002 OB 3.0

Hi All,

My OB seems to have frozen up in a cold snap here in NC. I was getting cranking but no firing at all.

The temps are up now but she still wont start.

Cranks strong, sputters for a second then dies.
I replaced the fuel filter - cheapest and most obvious part.

Is the pressure regulator next or maybe the fuel pump?

Thanks for helping!

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post #2 of 3 (permalink) Old 01-16-2010, 07:48 AM
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If you're comfortable doing it, check for flow after the filter where it connects to the fuel rail inlet.

Not sure if the 6's have a schrader valve like most other cars do where you can check with a fuel pressure gauge, my 2 doesn't.

Doesn't take much moisture to cause havoc when frozen in a fuel system, any chance of pushing it somewhere warmer ?

If not, maybe get a hair dryer and warm up the fuel lines.

Once you get it started, might want to put some HEET in the tank to dry up the water.

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post #3 of 3 (permalink) Old 01-16-2010, 03:05 PM Thread Starter
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Hi, I got the thing started again, here's my best guess..

When it got so cold, I think that condensation froze in the catalytic converter and essentially plugged up the exhaust.

I had a friend squirt starter spray into the air intake (disassembled the air box) which caused the engine to catch for a few seconds. We did that a few times until it would run at high rpm but not idle. White smoke was billowing out the back - scared me, I thought I cracked the head or something. After a little bit, the smoke cleared and the car would run.

Since my wife takes a lot of short trips, I figure that the exhaust system had some water built up and the super cold temps (not above freezing for 2 weeks) caused the it to freeze in the cat and clog things up.

I let it idle for about an hour then took it for a drive. It struggled initially but a few hot laps around the block and it was back to normal. Whew.
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