Countryboy2744

Check for a leaking manifold.

08screwCA

Dish soap and water to check it? I was thinking manifold too. Excuse to buy shorty headers instead of a factory manifold

Countryboy2744

Either that or put the truck in drive holding the brake and the giving it a bit of gas if you hear the rattling increase as you accelerate it's the manifold. Also on a cold start it will be loud for about 30-45 seconds the quiet right down. I have a manifold leaking on my 2008 as well on the passenger side

08screwCA

Sounds about right lol

Countryboy2744

Muffler shop here in Lloyd quoted me 450 for a new manifold and install

Evader53

So does yours sound like this does and only do it between 900-1100rpm? I'm going to try unplugging the solenoids this weekend and check to see if it does it.

Countryboy2744

Yeah it does. On cold start from the passenger side and when the engine is under load. Can really hear it when going through a drive thru when your window is down

Evader53

Interesting... Mine is completely silent though on cold starts. It only does this when warm and it does it both under load and neutral.

Worth looking into though. Like I said I'll check the vct solenoids first and go from there.



Any other input from people with knowledge of this issue is greatly appreciated.

08screwCA

Mine only does under load in that rpm range. Drivers side only and is embarassing in drive throughs feel like i need to defend my trucks honor when people ask about the noise lol

Countryboy2744

Lol I know what you mean. That's exactly what it is then is the manifold leaking. What happens is a stud breaks that holds the manifold on and then it allows air to get by and the manifold gets "warped". At cold start its most noticeable till the manifold gets warmer and that's when it quiets down. It is a very annoying noise and makes you think your truck is gonna fall apart.