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2004 Forester XT
63 Posts
Your camshaft position sensors are on the back of the head just behind the fuel injector. Not easy to get at. So, looking at the engine, while standing in front of the car, cyl1 is closest to your left hand and cyl3 is right behind that. If you then move to that side of the car and really twist yourself around you might be able to see where the fuel injectors are - because they are hidden under the coolant reservoir and steel bracket/guard.

However, if a camshaft sensor goes out, you will usually get misfire codes for both cylinders in that bank.

also, if the engine suddenly started lurching while you were driving, it is more likely something besides a simple misfire, those are typically barely noticible. I have even seen an ej25 with two cylinders not running at all and the owner was saying it was "fine" and made "great power". It is more likiley that you have a mechanical issue, whether that is just timing belt slipped or something worse.

At 94k you are almost due for timing components to be replaced, valves to be adjusted, and compression and leak down tests anyway.

It is actually pretty easy to do the tests. They will tell if you have damaged valves. Then you can make a decision on whether to invest in the rest of the maintenance, or have to rebuild.
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