2020 sr cold start rattle

Kev72912 said:
I am not op but when I bought my 2020 Tacoma from a dealer it had 100k miles, (as is no warranty). Funny stuff the engine light turned on 5 minutes after driving off the lot with it. Had a bad cat converter.

I assume they knew about rattling issue but didn’t say anything or maybe I’m just plain unlucky. Ya live and learn right. But as long as this baby makes it to 300k miles I’ll be happy.
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you bought it from a Toyota dealership?
 
tacojoel said:
Unless its a diesel powered vehicle, I never would buy someone else's used vehicle with over 50k miles, but thats just me.
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bought mine at 49k, i had alot of gremlins i had to iron out and still have a lingering cam bolt that loosens up and creaks till i torque it down, drives me nuts, i think maybe the cam bolt or nut got striped out by a overzealous air impact wrench or something, the cam tabs got rolled and really dont have the money for a full LCA arm replacement, this was done at a Toyota stealership
 
Kev72912 said:
Mine rattles no matter the outside temperature. Take a video and post it so we know it’s the same rattle cause when mine starts up angry it’s loud as hell. It’s more than disconcerning
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that dont sound right mine makes all kinds of noises with a below freezing soak till the oil circulates maybe a minute or lesss, no rattles above 32 degrees maybe its a bad drive pulley or waterpump, mine are all original with about 156k miles
 
VVTI makes a classic noisy ratching clacking noise for 5 seconds, or so whenever cold started, or when the engine has been off for a few hrs. It's definitely a recognizable sound if you've heard one before. When cold the majority of oil is at the bottom of the engine, it takes a few seconds before enough oil pressure gets the oil up top. Newer engines use a solenoid for the vvti, which should be checked first....could be an easier fix. Otherwise the vvti cam gear needs to be rebuilt, or replaced. Its a fairly common failure if not doing regular oil changes. It's important to use a synthetic oil with a quality additive package.
 
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