That's surge. What kind of mods do you have?

 

No mods. Just a stocker F350. I'm gonna search "surge".

Sleeper, THANKS.

Can you guys recommend any threads to read for a noob with a first power stroke? I'd like to get to know my truck and be able to do SOME work on it and know what's going on under the hood. I work on street bikes but never a Diesel motor.

:ford:

 

Searched 'surge' but didn't really find anything similar to the problem i'm having. I'll try to shoot a video this weekend when I pull the trailer to the campsite. In the mean time, any suggestions would be helpful.

thanks.

 

anyone?

 

You shouldn't have surge with a stock truck.

Could you give a better description of the noise? You could check the turbo for shaft play (in and out, top to bottom), and see if it is making contact with the housing.

 

Could even be the fan locking in....

Does it do it right off , or does it take a 30-sec or so to start the noise?

Any mods? Could be the exhaust rubbing something..

 

NAH, it's just random. It also happens when i go over bumps. It seems like something is loose and rattling.

 

If you pull the intake off the turbo you will ba able to spin the wheel and push/pull with your fingers to see if there is excess play.

 

I changed out the boots on my intercooler tubes. Had a constant "buzz" when the boost hit 20psi under full throttle.

Tightened up the clamps and it went away.

Take a look for any cracks where the boost tubes connect to the intercooler and the upper intake Y-tube.

That'll be the cheaper problem to fix.

 

:whs:

 

Thanks guys. I'll check out the boots and open up my intake and check out the turbo. If the turbo is rubbing will it explode?

 

Eventually, yes.

 

OK guys, Here's the video. I was pulling my trailer up hill and there's a small noise coming from behind the dash. Can you tell me what it might be?

 

I hear a rattle not a buzz but what do I know.

 

Yeah.. it's a rattle. What IS that noise?

 

Can you MAKE it do it? With pedal input?? Or is it completely random?

 

:whs: If its random then something is deff wrong. if you can make it do it then its a surge issue.

 

I can make it do it with the peddle but only under heavy load going up hill.

There's a sweet spot when I let off the peddle where it will make the sound.

If there's a surge issue, what are the next steps I should take in order to eliminate the sound?. . . .

Thanks for all of the reply's (serious or not)

 

You need to make sure your airbox is still sealed well. It sounds like surge to me. Now we just have to figure out why you're JUST hearing it.

 

What do you mean by "JUST" hearing it? What else should I be experiencing? Loss of power? Leaks?

 

I know for a fact that the air box is brand new BUT, when I bought the truck i realized that it had been in an accident where the front end was crashed in and re-built. I dunno if this helps or not. .. . . So you think it's surge for sure? Do you think I should just take it in to have it looked at?

 

That defineately sounds like surge to me. Put a ported shroud compressor housing on it or at least a wicked wheel.

 

No... if it only happens every now and then... I wouldn't stress about it... It gets worse when you add fuel.

 

What elevation do live at? Higher elevations will cause it to surge a lot more.

 

After listening to that video, it doesn't sound like the surge I've heard before. I'd pull the intake off and check the turbo for play. I didn't see on here where you had yet, so that might be worth a shot.

Justin

 

Seriously? Pull the turbo out? Is there a "how to" on that anywhere on this forum? I've never messed with a turbo ever at all. Sorry for all the noob questions.

 

You don't have to pull the turbo to check for shaft play. Just unhook the intake hose that runs from your air filter to the turbo. Stick your hand in the turbo and grab the wheel and see if you can move it up and down and/or back and forth.

Justin

 

Not being a Smart A$$, but the motor must be off. I would hate to see PSN blamed for missing fingers.

 

Pull of your intake boot(the 4'' to 3'' one)that goes onto the turbo housing and check your compressor wheel for movement (shaft play) side to side and in and out.

 

Thanks guys. I'll try that out and if there's play? What then?

 

Depends on how bad the movemet is.You'll have alittle no matter what,just as long as the wheel aint rubbin the housing.

 

Thanks guys for all the input. I'll check the play and get back to you guys. I'll try to post a video if possible as well.

thanks again.