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- เผยแพร่เมื่อ 13 มี.ค. 2020
- This was a quick teardown & diagnosis of what I found while messing with a 2.5L Subaru engine. Car had 60k miles w/ all maintenance records & oil changes, ...but somehow developed a knocking noise. This is what I found out after a bunch of research
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That engine damage is from oil starvation in cylinder 3.
EJs are notorious for spinning bearings (Cyl. 3 in particular ) when low on oil.
Horizontally opposed engines are what they are and they need ALL the oil ALL the time.
Hard cornering when you are even a under 1 quart low will cause this exact issue, the resulting knock and this exact engine damage.
Moral of the story ... When driving a Subaru check your oil every time you fill up you gas tank and make sure it at the top of the fill mark.
Every time, so weekly…. Sure thing!
I bought a 2017 Subaru Impreza brand new from the lot.... put on just under 55k miles on it and this exact same noise happened. I always used genuine Subaru oil filters. After 7 recalls, rear brakes and rotors replaced under warranty, engine coolant always disappearing along with other issues I traded it in for another new vehicle. This was my first and LAST Subaru. Wish that they were still made in Japan!
They have only ever been made in Japan as far as I know
The newer ones have more problems then the older ones.
@@harrisonhein1287 USDM impreza was made in US, the european market one I heard was made in Latvia or Estonia.
@Align700nitro the vehicles, yes, but the engines are made in Japan and shipped here . That's why your first oil filter will be the black Tokyo roki.
@@Align700nitro legacy was made in Japan and America ….Fact
Gone through two Subarus. Might just sell my Legacy soon. If it was cheap to fix, but on a budget...sometimes some dreams your got to let go and cherish the memories.
Now im worried. My 08 impreza is starting to emulate this engines noise. Sounds like a sewing machine and the knock is so very faint. Also, on acceleration at low rpm it makes a rattling noise almosts like an exhaust clamp is loose but all the heat shields were removed for a test run and the entire exhaust from the header to the tip is solid with absolutely no loose parts, so i know its the engine internals that are the culprit. Ive never heard an engine make that rattling noise before. Any input from anyone would be of tremendous utility to me. Thanks for the content. Keep up the excellent work everyone!
How you fix ?
I’m having this issue and I’m being told that it’s the rod bearings that are the issue
I dont know if your analysis about the filter operating in constant bypass is accurate. most folks dont use OEM filters and if it were true that non OEMs killed motors, more EJs would be dying. Subarus filter really isnt anything special - its a rebranded Fram.
The new one is fram with modified 23psi bypass. the old black filter was supplied by Tokyo Roki
this is why i use same filters the acura integra type r uses filter fits subaru and its got high flow rate and wont by pass as easy unless u got blokage
Some advice : dont tell anyone you know how to fix cars otherwise you will have all your friends and family parking their broken cars outside your house. I found that it was handy for keeping my own car in good running order, but was also a bit of a curse ..
bruh this is so true.
Which has absolutely nothing to do with this video, but hey you just had to say something.
@@podatrb3360 So what. It was on his mind while watching the video. Let him say something about what’s on his mind without ridiculing him for it. He’s definitely not wrong though, I can’t get away from working on family members vehicles! 😤😒
😆😆😆
They will park their shit there if you let them.
NOTE: There are many things that can cause "knock" or "tick" or similar sounds. Some (e.g. a misfire, will produce a definitive DTC.) In my case, my college student son has a 2006 Impreza 2.5i. He is ALWAYS running around, thus I have little access to it. After fixing a code indicating bad O2 sensors (with new OEM Denso upstream and downstream sensors) all was well for a while...then the dreaded P0420. I tried the "hacks" to clean the cat, none worked.
I finally got some time with the car and ran a new scan. I found the upstream O2 sensor was reading 0 volts (the downstream was OK.) This would explain the code. Now I have to get under the car, remove the belly pan and determine if it's a gasket (PLEASE!) or a cracked manifold.
(BONUS SUCKAGE: It's a used Texas car - I'm in Wisconsin. Low mileage, no rust, decent CarFax service records, but no idea if it had a timing belt. So I bought a complete OEM kit + AC & PS belts, water pump, the works. I'd take it on buy have a shoulder injury and an import shop was going to do it for $300. And then my son comes out from a store 2 weeks ago and there's a "spray" of coolant throughout the engine bay, mininal on the ground. Resevoir was not down much, cap too hot to remove. He drove the 6 miles home, no smells, no more leak, no exhaust steam, no smoke. Nonetheless, my import specialist tech said "small head gasket leak" and told me not to do the belt job if the engine gets pulled for new gaskets. AND don't bother with the exhaust leak work/expense. Thing is, messy as the blast as coolant was, it was minimal, and denoted a gasket failure outside the coolant jacket inside the head/block. I poured Bars Leak Head Gasket repair, followed all instructions, light then moderate driving.
So if the HG is repaired (major, no way...minor/tiny...decent chance) I invest in the exhaust fix and get the belts done. If the HG absolute needs replacing, I throw at least some of the money away getting those things done. I'm a Subaru nut and it's my first HG issue. And of course, it happens along with other issues, complicating it all.)
Looks like carbon buildup - can result from poor quality gasoline. Not for the guy In this video but for those experiencing typical knocking/pinging/rattling noise, You can try doing some Seafoam engine treatments through vacuum hose for the brakes or intake, followed by using premium gasoline.
Subaru uses Fram filters with Subaru printed on the side.
My knock is like someone beating on the car
Knock knock
Who's there?
Subaru
Subaru who?
Knock knock
😂
LOL, I don't know if you can hear it.... oh YES we can....I did not know that about genuine subaru oil filters.... guess what I am buying today... THANKS
So you recommend using only Subaru oem filters? Any other brand u recommend other than oem
Yes, I looked into it deeply at the time & WIX sells an oil filter that is also compatible with the higher oil pressure. WIX 57712 I believe. But double check your model first, they are about $6 on Amazon
@@JohnCalebWarren I've been using aftermarket filters for years with zero issues.
Mine only rattles at certaij rev on low throttle once i oicjup the gas it goes away got me stugfed what it is
How much did it cost to fix? Having the same noise coming from my 2015 wrx.
Me too man my Subaru cut off in me and and I got it back to crank but it makes a knocking sound man and I’m still paying in this car smh
I got a knocking sound on my 08 Subaru legacy & I've tried just simply parking it from the street onto my driveway & it's die. Would this be a similar problem or something more?? Also still paying the car & it sucks not to use it!
I don't know may be just a general assumption, but everytime I saw a Subaru passing through, some of them got this sound..
No, you are right. I'm sure most or all of those you heard had the 2.5 liter engine. Seems they all get that noise. Some start making loud engine noises shortly after purchasing them. My 2023 Crosstrek has the 2.0 liter engine with 20,000 miles on it and it is super quiet. I've never heard of noise complaints on the 2.0 liter motor. The 2.5 liter motor is well documented for sounding like crap.
John, first 13 seconds seems a different noise that later in video. My ej25 DOHC just started making this noise and seems to be coming from the driver side (long screwdriver to find loudest area), it ramps up like the sewing machine. Based on what you found, I am going to check oil filter, I think I did use a wix ?? / will look at that. Timing belt new, but there was some oil/great in the bottom of one of the timing covers. I was driving along and bam, high temp, lost power, and made noise, shut it off and towed it to my automotive class (paint and body), start it up tonight, and I now have a sewing machine. think I have to pull it and look around ? If engine builder did not pay attention to valve caps, could that have cuased this ? IDK, any advice is appreciated.
I would strongly recommend replacing that plug wire first. I had one of my spark plug holes completely filled with oil from a leaking journal seal. That caused the coil to overwork and burnout. I would strongly recommend replacing the coil and plug wires
The thing about rattles and ticks is that it could be so so many things. I can’t figure mine out but I’m leaning towards avcs or broken cat
Send it to the moon!
Where are you located?
The Subaru blue filter of death
Do you recommend oil additives to fix the knocking sound? Like dura lube?
I tried a few oil additives including Lucas and nothing fixed the knocking noise. Once the ringland gives out and the rod bearing is chewed up there is no quick fix 😕
Subaru special high pressure oil filter......
Biggest lie out there they charge 10$ for a $4.29 basic fram filter, cut it open and compare to the basic fram.....they are the same
The only filter I use is wix xp 57712xp it’s the only aftermarket filter that meets the 23psi bypass criteria and it is much better filter with metal retaining caps, metal bind for the filter material, metal bypass valve, and and better quality silicon.
The Subaru filter is all cardboard, glue, and one piece of dogshit rubber pressed into a metal can, it’s trash, don’t use it
Yeah I didnt get this sound until after I let the dealer change my oil, wondering if they used the same cheap crap. Gonna go get the wix 57712 filter and do an oil change.
@@SmossyYT the only two filters that should be used are either the 57712XP Wix filter or the black Tokyo Roki filter that is actually made by Mazda
I would argue there is a direct correlation between the change in filters from Subaru, the use of 5W30 EC oil, and outsourced engine production to China post 2008 and the increase in blown EJ/FA engines
Oh and don’t just trust anyone to build a Subaru engine, when tearing apart a block for a rebuild there is specific machining that needs to be done, to include a line bore on the rod journals as these blocks flex under high load
Dog shit in a metal can might actually perform better if the dog eats quality food on the regular over what they press in the can!
Even the cargo plane of rubber dog shit headed to Hong Kong is offended of being compared to that Jap Crap!
lmao
Drain that piss 0W 20 oil out. Put in Valvoline 10W 30 full synthetic with a quart of Lucas synthetic oil stabilizer and she’ll purr like a contented kitten.
Hi Wilson, does this also work on an ‘02 wrx?
did you even fix it?
Replaced the engine
Subaru: confidence in motion
No confidence in motor ahahah
I have a similar noise but goes after after 1-2 seconds and only on cold starts. Would rod knock go away when warmed?
Friend has similar issue -- anyone have any input?
That's the lifters
piston slap, same thing with mine.
Same
Hi bro I have a 2006 impreza Hawkeye 2.5 and just started getting this noise,its costing me over £1000 to get sorted,this is my 1st impreza and I have learned the hard way,what did you do to sort it,ave been told I need a long engine or bottom half to sort it ? I am fukn gutted 😂
Appreciated for the video 🏴
Hi, i have The same problem! What did you do 2 fix it?
@@uber1316 got my engine fully forged costing £3200,if u want.to keep it and enjoy it do what I done,if.not walk away lol I feel ur pain bro,what u got ??
My sg5 has that sound
What about k&n oil filter?
generally using a decent filter is fine, wix sells one thats rated properly, k&n is a decent brand so id assume its just fine
I love Subarus look, design , AWD and everything. But the bad reputation of head gaskets, engine, coolant issues always stops me from buying one.
Head gasket issues were fixed in 2009. That’s not reality anymore. Even then get some multi layered gaskets and problem solved. Coolant issues happen with worn water pumps, leaks, and improper maintenance. They’re really reliable cars. Just check your oil every week and I really mean check it once a week.
@@GabrielGonzalez-pn6dp I was told by a mechanic that they also have engine knocking issues on the new models and to stay away from Subarus because they have to many issues.
never had an issue with aftermarket filters on my turbo FRS and they say the FA20 was a poor design but mine ran strong till the end.
I bought it new and did everything myself, poor ownership leads to issues more than the parts themselves.
Ive noticed that a substantial majority of the so called " typical Subaru Boxer Engine problems" are experienced by individuals with little to no knowledge of the intricacies of a turbo charged engine. They also neglect the proper care and feeding of their pet project as well. They will fire the car up and redline it before fluids heat and displace properly. They will run it to 8k through every gear, every time they drive it. They play Mcrea and do a full send at every opportunity and then they just do a basic oil change every 8000 miles, if they feel like it. Virtually all of the people who have Head Gasket issues are these people. I know many individuals who are meticulous about their preventative maintenance that have over 200k miles on their EJ's without a single issue. I see alot of inexperienced guys going 100k miles without a timing belt kit, water pump, thermostat replacement and i see failure as a result. Subaru are solid and you get out of them exactly what you put into them. I'm at over 200k miles with mine and she is just starting to see some issues. I believe it is the problem in this video. But ive also toyed around with an EJ25 NA and put a hurting on it pushing it in ways the NA isnt supposed to. Its a weekend dirt car with a bit of internal work, head swap, and all the common bolt ons coupled with a romraider tweaking of the numbers. High compression low gearing cams are changed. It only puts out 245hp on the dyno but its enough for what i do with it and remains a reliable daily driver and fun dirt track car. I had to do it. I live 5 miles from the local Lernerville Speedway so its difficult to convince myself not to.
How much are you saving by buying aftermarket oil filter? This is the heart of the engine- if you can't afford another ten bucks or so - you probably aren't old enough to drive a car anyway!
ive been running shit oil and shit filter for the last 120000km. and the guy before me ran mostly coolant for oil at the time i got the car lol
I have the same sound issue just started from today for my 2009 forester. I’m living in country town, a mechanic said it could be a major engine problem
What would you suggest ?
Did you ever get it diagnosed? My 09 outback just started doing this today
@@aarondittamore4282 i sold them for $4k
Change the oil and use full synthetic 10W-30 with a quart of full synthetic Lucas oil stabilizer. That 0W-20 is too thin with high mileage. Worked for mine. Went from knocking and tapping to purring like a Kitten after running out of oil from forgetting to put the oil cap back on.
@@wilsonjohn9766 Ill try this on mine, let you know if it works. I have a similar sound as this video but not as bad. Cars maintenance records are almost flawless so hoping it was just a bad oil filter from a shop. 200k Miles on my h6
@@SmossyYT any updates?
Junk
Poorly engineered car.
Not in same league as Toyotas or Hondas.
Exactly!
Well, problems caused by a failure to use a proper oil filter are not evidence of poor engineering.
@@delyank0 These poor fools are just unhappy with the way they failed to care for their vehicle.
@@delyank0 well it is due to poor engineering... of the oil filter, lol.
Honda and Toyota have major problems just check and read buddy