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Old 10-06-2012, 02:06 AM   #4
UK-Wagon
Scooby Specialist
 
Member#: 232430
Join Date: Dec 2009
Chapter/Region: SCIC
Location: On the Left side
Vehicle:
555 XTi
1 AW & 1 CGM

Default

Cylinder Leak down test

If the swap has 24k on it id be hard pressed to say the head gaskets are wrong. But if just the short block has 24k then yes, id be wondering.

Sadly this issue is common with hybrids. Causes can be many things... like

-Fuel pressure
-Fuel regulator
-Timing off
-Light weight flywheel installed
-Light weight crank pulley and light flywheel combo
-Dirty MAF
-Vacuum leak after the MAF
-Weak main harness ground or injector harness/intake manifold ground is loose or weak

You havent really tried many things.... Seeing its tuned at Yimi, you should take it to them and have it diagnosed there. The so cal region has LOADS of good shops with subaru knowledge. If you cant perform these tasks your self, Id HIGHLY suggest taking it to a reputable shop and stop wasting time with it on youre own.
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