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Old 12-27-2019, 08:26 AM #31
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I notice a difference when using quality fuel from a top tier gas station like Mobil, but on occasion I buy from a non top tier gas station like Racetrack. I use only 87 octane.
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Old 12-27-2019, 09:59 AM #32
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Quote:
Originally Posted by EddieV4runnin View Post
Thatís the air injection system youíre hearing on start up.
Sounds like it's coming from the grill.
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Old 12-14-2020, 09:37 AM #33
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Hey guys Iím pretty new around here.
Iíve been noticing what seems like to me is a weird rattling noise at startup when the engine is cold. And even when accelerating. It completely goes away once the engine warms up. To me it sounds like piston slap. But hoping I could get all of your input on it. Hoping to hear where there or not any of you experience this same thing.http://https://youtu.be/QaJfCV0Dtrw
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Old 12-14-2020, 11:31 AM #34
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Quote:
Originally Posted by DaveCS4RnnR;3579088[URL="http://https://youtu.be/QaJfCV0Dtrw"
http://https://youtu.be/QaJfCV0Dtrw[/URL]
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Old 12-14-2020, 11:58 AM #35
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Quote:
Originally Posted by callihan_44 View Post
I noticed some ticking but only when the engine is cold, once driving the sound goes away. I was thinking the recommended oil weight seemed kinda low 0 -20w ? Normally in my other engines I run 5-30w and 10-30w syn in summer
0w-20 is for CAFE. In other parts of the world our engines can use oils up to 20w-50 depending on expected temperatures.

I got hold of the 2015 Australia recommended oils page awhile back. Chart is actually for the FJ.




The Middle East is different still, sorry don't have the chart.
15w-40 down to -12C / 10F
10w-30 down to -18C / 0F
5w-30 for 10C / 50F or LESS

I am currently running 5w-30 with zero issues and will be trying some 5w-40 and 15w-40 down the road a bit.
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Old 12-14-2020, 01:41 PM #36
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Sorry about that. Heres the link
4Runner engine noise when cold - YouTube
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Old 12-14-2020, 02:16 PM #37
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I have a 2019 4Runner that makes most of the above mentioned sounds, especially when cold.
Years ago, I bought a new 1992 TOYOTA pickup with the inline 4. 22RE?
Started making a noise on startup, eventually threw a timing chain, just out of power train warranty of course. Toyota sprung for half the parts. Soured me on Toyota for awhile.
Bought my brothers 97 4R in 2007 with 100K miles. Daughter drives it now with about 220K on it and has been a good car.
If my 2019 ever has a problem like my 1992 had, I might dump some gas inside, drive it through the dealership front window and throw a match in it. LOL
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Old 12-14-2020, 06:09 PM #38
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Thanks for responding man. I really donít mean to dig deeper into what youíve already said. But the sounds Iím more so referring to is the rattle that comes around while revving. Which is a more district knock. You bring up a pretty good point about timing chain. So maybe itíll be something I look into. Iím honestly at the point where Iíll just drive it and not care about the nosies LOOOL
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Old 12-14-2020, 07:38 PM #39
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Quote:
Originally Posted by DaveCS4RnnR View Post
Thanks for responding man. I really donít mean to dig deeper into what youíve already said. But the sounds Iím more so referring to is the rattle that comes around while revving. Which is a more district knock. You bring up a pretty good point about timing chain. So maybe itíll be something I look into. Iím honestly at the point where Iíll just drive it and not care about the nosies LOOOL
Presumably this is a 'new to you' vehicle, make sure it has the correct grade oil in it, Synthetic 0W20 or 5W30. Maybe it has JiffyLube 10W30 in there? The valvetrain or rocker arms are loud on a cold start but normally not that loud
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Old 12-14-2020, 10:19 PM #40
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Originally Posted by DaveCS4RnnR View Post
Sorry about that. Heres the link
4Runner engine noise when cold - YouTube
Sounds just like mine....
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Old 12-15-2020, 09:57 AM #41
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Normal. THis is my 2nd 1GR engine-equipped vehicle (1st was my 07 Tacoma, which my best friend still owns and has over 250K miles on it). They are just noisy motors, but very reliable.
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Old 05-27-2021, 01:37 PM #42
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The clicking noise you hear at low RPM is the fuel injectors. they are solenoid valves that open and close. The clicking to the back seat when closing. If you increase the engine rpm the frequency increases and it is less noticeable. It is also more predominate on cold starts. If this bothers you you can add an upper cylinder lubricant to you Fuel tank. Lucas Amsoil and Redline all make them. Personally I use Marvel Mystery oil in My 2018 Limited. Use 4 ounces per 10 gallons. So 9 ounces per tank. You will notice a difference. You can buy a 1 gallon jug at Walmart for around $18.

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Old 05-27-2021, 01:55 PM #43
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Quote:
Originally Posted by JLTD View Post
0w-20 is for CAFE. In other parts of the world our engines can use oils up to 20w-50 depending on expected temperatures.

I got hold of the 2015 Australia recommended oils page awhile back. Chart is actually for the FJ.




The Middle East is different still, sorry don't have the chart.
15w-40 down to -12C / 10F
10w-30 down to -18C / 0F
5w-30 for 10C / 50F or LESS

I am currently running 5w-30 with zero issues and will be trying some 5w-40 and 15w-40 down the road a bit.
I'm running a 30 weight as well and the engine is smooth as butter! Did you ever run a 40 weight?
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Old 05-27-2021, 01:59 PM #44
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Quote:
Originally Posted by Longtimeengr View Post
The clicking noise you hear at low RPM is the fuel injectors. they are solenoid valves that open and close. The clicking to the back seat when closing. If you increase the engine rpm the frequency increases and it is less noticeable. It is also more predominate on cold starts. If this bothers you you can add an upper cylinder lubricant to you Fuel tank. Lucas Amsoil and Redline all make them. Personally I use Marvel Mystery oil in My 2018 Limited. Use 4 ounces per 10 gallons. So 9 ounces per tank. You will notice a difference. You can buy a 1 gallon jug at Walmart for around $18.

Longtimeengr
I've never used Marvel, how does it compare with the Lucas? Running Lucas every fill up, so far so good.
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Old 05-27-2021, 08:04 PM #45
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Quote:
Originally Posted by Hammer0313 View Post
I'm running a 30 weight as well and the engine is smooth as butter! Did you ever run a 40 weight?
Not yet! 5w-40 is slated for the next change though.
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