engine noise

[rtetrault]

I am getting a noise in my v8 when I first start my truck that makes it sound like a Diesel. It goes away after a few minutes, does anyone know what this is, or had the problem

[delrmx01]

Is it like a knocking sound ?? clicking ??? --maybe a cracked manifold

[BackInBlack]

How many miles on your truck so far?

[rtetrault]

24k.. I was just looking at it during lunch, It doesn't appear to have any exhaust leaks.

[delrmx01]

Don't think you'd be able to see the crack if it was on the manifold ....

[rtetrault]

I'll have it checked out, it should still be under warranty anyway.. Thanks!

[sdmahr]

I believe the noises you are hearing is referred to as "piston-slap", which is common until the pistons warm-up, expand, and fit without making noise while running.

Anybody else care to comment?

[redmondrr]

Rtetrault,

Perform a search for piston slap, diesel - you will find a few posts. Some Tundras are worse than others. I've had two. During cold months, the 2000 sounded like a diesel until it warmed up; the 2001 does not.

[rtetrault]

I'm not sure that is the case, the truck has 24k, It didn't use to do it. It is more likely the manifold.

[tbdonne]

Originally posted by rtetrault
I am getting a noise in my v8 when I first start my truck that makes it sound like a Diesel. It goes away after a few minutes, does anyone know what this is, or had the problem

You might want to do a search for the thread "Deisel Knock Tracking" under Engine and Drivetrain. It has been active for quite a while.

[rtetrault]

Gentleman, As it turns out.. cracked manifold.. so who ever guessed that wins!!