Ernesto2.5

3 minutes ago, silverton said:

Oh buddy...they definitely have internal coolant passages. There's coolant passages into the timing cover as well.

All boxer engines will have the same problems when cared for improperly, it's not the car if you catch my drift, boxer engines are far more prone to head gasket failure because your oil literally pools at the seam, the older your oil is the more likely it is to escape, once escaped it doesn't stop.  I've seen many spotless EJ's from the early to mid 2000s with 100-130,000 miles and it's very clear that they're original.  Of course these are the cars that are changing their oil at 2400 miles instead of 3000.

I see head gaskets failing on FB motors all the time.  Since you are under 100k, if you have been diligent with your service history (ie changing your oil every 6k per their recommendation, and doing the major services) they may help in some way.

I bought it pre-owned with 88,000 miles. Looks like previous owner was doing 7k oil change intervals.

5 hours ago, ammcinnis said:

That's really strange ... because there are not supposed to be any water passages through the head-to-block interface in the FB25 engine. Coolant is routed through the block and heads in parallel flow paths, rather than in series. See attachment.

FB25_Cooling_system.pdf 677.61 kB · 5 downloads

That's interesting! I was having coolant loss so I took it for a diagnostic appointment. Turns out headgaskets are seaping

Anyone else having head gasket issues on their 6th gen legacy? I took mine in for a diagnostic inspection and it turns out one of the headgaskets is leaking coolant and oil. The car is currently at 96,000 miles and it surprises me Subaru is still having these same issues as their EJ motors. None the less Im lucky I bought the extended warranty because now the warranty company has to pay for a 13.5 hour job. And yes the job was approved. Now let's see how long they'll take. 

Clean. The. Throttle. Body.

Is there any risks in cleaning an "electronic" throttle body?

Welcome to the forum!

Sorry to hear of your issue.

Intermittent faults are the hardest to troubleshoot and easiest for dealerships to dismiss.

What has helped me in the past (several times) is to capture it on video.

(Describe what you are doing during the recording)

It may take a while, but, once you capture it, walk on in and show them.

There is a recall related to the fuel pump that may be a culprit but was for '19 models last I checked.

https://legacygt.com/forums/showthread.php/2019-legacy-fuel-pump-recall-282976.html?t=282976&highlight=fuel+pump

 

Keep the group posted with your findings and ultimate fix (it helps us all).

Thanks for replying! Thats a great idea! Im on hold at the moment with Subaru customer service.... Lets see what they say. I have a feeling it may be fuel pump related. From the research Ive done so far. I'm reading the 2015 Legacy's have the Denso low pressure fuel pump that was recalled in newer models. I will definitely keep everyone updated.

I tried searching here and online but can't find anything specifically related to my issue.

I recently bought a 2015 Legacy 2.5 Limited from a Subaru dealer. The current mileage is 89,101 miles. Today was the second time the Legacy would start-up but immediately die(turn-off) I got it to stay on by revving the engine on start-up. No CEL as of now but tomorrow I will connect my obdII scanner to check for pending codes. Anybody have a clue as to what may be causing this issue? It has happened only at night time when the outside temperature is colder. I work for a mobile dispensary so I do a lot of short distance driving. I noticed it (the issue) has happened after the vehicle is at normal operating temperature and after a short distance drive. Any input or knowledge of this issue would be greatly appreciated. I have warranty on the vehicle but replicating the problem at the dealer is highly unlikely. There is no record of spark plugs being replaced so I may change them. (Yes, I'm going to order oem spark plugs haha)

Thanks in advance to anybody willing to give me some Insight