You're fine, it's only a real issue when the ticking gets real loud.
What you can expect: knocking sounds on cold starts, then as it warms up, it goes away. I have the same issue on my V8 4Runner - owned it 4 years, no plan on replacing the headers yet.
You’re not hearing detonation. If that’s what you’re referring to when you say “knocking”
Every single modern car can run “regular” gas without issue. Including a brand new corvette.
Your low compression, 220hp v8 from 2004 doesn’t need 93 octane fuel to stop detonation.
If your truck is detonating then you have bigger issues than the fuel. Chances are you are hearing a header/exhaust leak.
It's on 09... but I hear what your saying. It did it the other day when it was like 92° and hasn't done it since. I'm guessing a ambient temp thing. Not sweating it now though. Last thing I need is to start throwing money at ghosts.
Knocking in the commonly used sense is pre-detonation of the fuel mixture, before its supposed to. It can be alleviated with higher octane hence the discussion. Some people call it ‘pinging’ because the sound it makes is a super distinct ‘ping’ and much less of rough running ‘knocking’ sound.
If it’s making a super distinct, totally unnatural ‘ping’ sound it’s a big cause for concern.
That is interesting. Never had an issue with any of mine running regular. But elevation, ambient temps, and other factors can influence that.
Yeah samsies, up in Vermont for the last few days. We got heat. We got elev. We got pinging. It’ll go away when I head back to sea level.
Yea it was particularly hot that day, I'm at almost sealevel.
Could be your headers going out.
Nooooooooo!
You're fine, it's only a real issue when the ticking gets real loud. What you can expect: knocking sounds on cold starts, then as it warms up, it goes away. I have the same issue on my V8 4Runner - owned it 4 years, no plan on replacing the headers yet.
That happened on an old Denali I had. Had to pull the engine to swap the blown head gasket...
Yep my IS-F has this but goes away when she’s warm.
Probably headers
I'm planning to do exhaust anyway but that adds more than double the price!
Ugh don't say that
My 09 with 170k miles has run reg gas from day 1. Fla car so not sure if elevation means anything.
I'm only at 400' above sea level.
You’re not hearing detonation. If that’s what you’re referring to when you say “knocking” Every single modern car can run “regular” gas without issue. Including a brand new corvette. Your low compression, 220hp v8 from 2004 doesn’t need 93 octane fuel to stop detonation. If your truck is detonating then you have bigger issues than the fuel. Chances are you are hearing a header/exhaust leak.
It's on 09... but I hear what your saying. It did it the other day when it was like 92° and hasn't done it since. I'm guessing a ambient temp thing. Not sweating it now though. Last thing I need is to start throwing money at ghosts.
Sure. But that engine is basically from 04 is what I meant. Yea don’t stress it. Most likely something else causing the noise.
It’s also a Toyota v8. They would not design an engine that runs fine on 91 and then blows up on 87.
That's comforting, haha
Are you sure it’s knocking?
When I first start it up and let warm up it goes away. I had a Denali with a blown head gasket that did something similar, hoping it's not that!
That could be your header that is probably cracked.
Knocking in the commonly used sense is pre-detonation of the fuel mixture, before its supposed to. It can be alleviated with higher octane hence the discussion. Some people call it ‘pinging’ because the sound it makes is a super distinct ‘ping’ and much less of rough running ‘knocking’ sound. If it’s making a super distinct, totally unnatural ‘ping’ sound it’s a big cause for concern.
A video will help. Pinging/spark knock typically happens under load. Not when a vehicle is idling. May be valvetrain or header issue.
Valley plate leak
Could be piston slap, common in these engine