club.liberty.asn.au

Hi, my 3.6 outback 2010 has just passed 250,000km, I have owned it since new, serviced regularly except for last 9 months as I live in Melbourne and it is difficult. It blew a fuel pump around 6-9 months ago but otherwise pretty faultless.

Recently i have been getting a misfire at around 1800rpm at part throttle, kind of when you just want to accelerate a little. The car senses it and drops a gear. Hard throttle is no problem, no missing and doesn't seem down on power. Starts fine.

Any ideas? It is probably overdue for new plugs. I had them done at the dealer whenever they were due, probably at around 100k, and I believe they put in platinum one. Not sure. Is it likely plugs or are there other common issues with the 3.6l.

I am tempted to try to do it myself but last time I saw the subaru guy do it he was half inside the engine bay and it looked difficult.
Thanks.

Get a pro to do it, not a dealership but a Subaru specialist.
Its a pain on an h4 let alone an h6.

I’d get the car logged to see which cylinder is misfiring.

The fault can be spark plugs, coilpack and plug/loom issues, inlet leaks, even avcs.

Even the gearbox is a potential source.

Basically get the car health checked, scanned for codes and or logged so you’re not just firing a parts cannon at it.

Plus it’s definitely around those k’s that all the inlet side gaskets, seals and orings start crapping out, causing inlet tract and crank case leaks.

These can be identified with a UV dye and torch kit via eg Ebay, plus <1psi inlet pressure testing with smoke and or bubbles.