Loud engines

[Gregad]

Why are the 7.3s so loud? The crank case noise with the windows down can be quite loud accelerating from idle. The exhaust is quiet. I noticed other newer diesels are a lot quieter.

[burrfree]

Mine is loud too. Compared to other diesels, these seem to be very clattery.

[Tmoney511]

Injectors I guess..

[chrispaine]

I was told it is the injectors..true?

[dusted4eva]

Injectors .. A fuel cross over kit and help dampen a little.

[66Bronco]

Yep. The main reason that Ford went to a split shot injector over the OBS single shots was for emissions and they were quieter. After that, they put the injectors in a "soundproof" box on the 6.4, and now they are running electronic piezo injectors. The clatter that you hear on the 7.3 is the injector hammering shut. That's why the new ULSD fuel is hard on injectors because sulfur was originally in the fuel as an ultra high pressure lubricant. Bear in mind that your injectors are operating at 25-35000 PSI several thousand times per minute. So yeah, their gonna be a little noisy.

[Dietoremain]

i enjoy the noise.

[Gregad]

Oh I enjoy the sound too. Just one more question you great people have answered for me to satisfy my curious mind! Thanks

[melmount]

I like the noise, The sulfer thats in the old fuel was not the lubricant. The process of removing the sulfer also takes out the lubricant with it. I add 2 cycle oil all the time tomy fuel. Power service too.

[dereku]

You think these are loud listen to a old mechanical injected diesel. I drive an old Mitsubishi a lot and it is noisy as hell