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99 2.5 DOCH Plugs foulded bad


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I picked up a 99 Outback 2.5 DOHC.  I ran but no power, I could hardly keep it running. 

The Timing is good,

I pulled the plugs, the back 2 where heavy deposits but white in color

The front 2 had heavy deposits, black as can be.

 

With the new NGK plugs it ran a little better but still lacks power and will not idle.

 

218K on the car, the HG appear to be OK and the oil is good.  Any chance of cleaning this out and making it a good Subaru or should I just drop my 2.2 in it and call it a day?

 

Thanks, Larry

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Check it for an intake leak or leaking fuel injector o-rings. Something is making it too rich. Though It seems odd that its front half vs rear half instead of left/right.

 

Were the deposits on the rear plugs kind of a crusty ash? Could be oil fouling due to worn rings.

 

Compression check may be in order.

Edited by Fairtax4me
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