engine rattles@high rpm

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Feb 7, 2007 | 08:08 PM

MAKO314

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Cargo Master

Joined: Apr 2006

Posts: 2,153

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From: Concord NC

engine rattles@high rpm

I get a loud rattle at high rpm when running the 120 or 140 settings on my Dp tuner. it sounds realy bad but it only does it at WOT and only in the high horse tunes. anybody have any ideas?

Feb 7, 2007 | 08:16 PM

Uzumati

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Joined: Jun 2006

Posts: 5,497

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From: Central, Al

Starving for fuel???

Feb 7, 2007 | 08:21 PM

MAKO314

Thread Starter

Cargo Master

Joined: Apr 2006

Posts: 2,153

Likes: 0

From: Concord NC

that is possible I have the reg fuel system just haven't installed yet. so you think that will solve the clatterbox problem

Feb 7, 2007 | 08:30 PM

Uzumati

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Joined: Jun 2006

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From: Central, Al

it could if a dropping fuel pressure is causing the rattle, but then again it could just be the pump not able to keep up.

Feb 7, 2007 | 08:36 PM

MAKO314

Thread Starter

Cargo Master

Joined: Apr 2006

Posts: 2,153

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From: Concord NC

my fuel pump has been squealing like a pig lately. think it might be ready to die on me?

Feb 7, 2007 | 09:09 PM

Kwikkordead

Fleet Owner

Joined: Jun 2004

Posts: 25,090

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From: Rio Rico, AZ.

Quote:

Originally Posted by MAKO314

my fuel pump has been squealing like a pig lately. think it might be ready to die on me?

Yes............

Feb 9, 2007 | 07:42 AM

PowerstrokeJunkie

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Joined: Jul 2005

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From: 21791

Im guessing it's a fuel problem, or the fact that you are floating valves. With that extra boost/fuel, the stock springs don't hold up too well to high RPM operation and not floating. Do you still have lots of smoke on the top end?