2015 4Runner Engine Knock

I recently purchased a 2015 4Runner that has developed a significant engine knock. It can be heard in the cab when your in the driver seat and in the wheel well driver side. Any advice on what it might be? I get the light Toyo tick but the louder metallic sound seems out of the norm.

 

sounds like lifter tick .. all lifters.. engine knock is lower freq ... cluck sound ..
what oil used ? 0-20wt synthetic is proper . also if the oil has some sludge try to add 5OZ of MMO .. marvel mystery oil in the oil .. only use 5OZ.. if the ticking is reduced then change the oil should be good.. if no change can be engine / cam / oil pressure problem .. engine damage .

 

Using the specd oil, had Toyota do an oils check just to if it would help and it didn’t. Added Lucas Oil additive and seafoam, didnt help.

If it’s an oil pressure issue wouldn’t the pressure sensor trip?

 

the oil sensor is a switch .. no pressure light comes on.. low oil pressure can cause the noise.

what oil did you use ? name viscosity and who installed the oil .. toyota oil filter ?
IMO do not use seafoam in the engine oil .. that will damage the engine internals ... MMO is a additive that increases the detergents and breaks down any sludge and lifter debris ,, seafoam is a solvent .. not an oil detergent ..

I would change the oil and filter see how the engine operates .. oil drain takes 45 min .. then if it still makes the ticking add 5OZ of MMO to the oil and drive it for a few hundred miles .. if no change then internal damage. cam /lifters etc..

 

I have this exact same noise. I've been looking for answers for the last year. It started at about 30k and I'm now at 60k. 2 separate dealerships have told me it's completely normal and there's nothing to worry about... That said, I've done a ton of listening and think it's most pronounced from the catalytic converter on the driver's side.

 

Sounds normal to me. Sounds like my 4R and my Taco

 

I don't know... it seems louder and more harsh than the standard engine tick. Although it is always hard to really hear those noises on video.

OP, the engine is normally quite noisy; I think your best bet is to find a couple guys near you with 4Rs, or go take another 4R for a test drive, and compare what you are hearing with their engine noises. If yours is significantly different then I'd go from there.

 

Sounds like good advice.

 

^This. The last dealership even pulled up a brand new one just to show me that it was completely normal... They sounded exactly, 100% nothing alike. The mechanics just looked at me like I was insane. Maybe I am.

This is mine BTW. Sounds the same as yours, but I would still argue, not normal

https://www.youtube.com/watch?time_continue=3&v=dpUhyqTt-LA

 

Sounds like my rig. Normal 1-GRFE noise. Note the mic may be amplifying a bit.

 

The mic is actually muffling it. It's quite noticeable outside the car. If it sounds normal to others, I'll buy that. Just weird that it didn' start until around 32,000.

 

Maybe I'm just being dumb.....but has anyone checked the engine mounts that have looked it over for you? If that thing spent any prolonged period of time parked the wrong way on an incline it could of weakend them and the knock could just actually be a very slight bounce or vibration. It's happened to my last two vehicles which is the only reason I bring it up.

 

Yours sounds similar to this video. Hope it's not piston slap.

 

I dunno I'm not a mechanic and also tough over the computer but I'm also going with normal. If anything I'm thinking maybe it resembles like a pulley/belt noise?

 

I have a 2016 4 Runner that had the engine replaced by the dealership with the exact same problem, and it seems we’re not the only ones with this same issue. The Toyota engineers told the techs that the car would run 200,000 miles with that same noise with no issues, but then replaced the entire engine afterward. Hopefully someone figures it out sooner rather than later, it would seem this noise is normal, which is the most annoying part of it all.