At Mack, they are having issues with soot in the engine oil. This problem is almost entirely due to the EGR system. Of course, the soot problem will decrease once the low-sulfur diesel starts hitting the pumps in 2006 (?). It's gonna drive up the price of diesel but it will also burn cleaner.

 

SBV do you think there is a difference between Power Service & Stanadyne? I have been using PS but maybe I should switch. Do we have retailers in TX that sell it or have you been ordering over internet?

 

Thanks SBV, that sounds very logical. Man, the good ol' days before computers controlled everything!

 

I also am having a hard time finding stanadyne but power service is available at Tractor supply. Would I be better off trying to order stanadyne instead of using power service?

 

What is causing you to want to unplug them ?

 

When I first went to dealer to scout out their service dept, the thing the diesel mech told me gave them the most problems were the egr valves. Check these pics
http://www.forddoctorsdts.com/photographs/
http://www.forddoctorsdts.com/articl...icle-05-01.htm

 

The EGR valves are causing hotter than desirable intake air temperatures and they are also adding soot to the intake air. Some of that soot is ending up in the engine oil and that translates into premature oil contamination.

What does an EGR valve cost from a junkyard? Why get a used EGR valve? Disconnect your wire harness from your engine's EGR valve and and plug your wire harness into the used one? Then, the computer will think you still have an EGR connected and the engine should run normally.

 

Diesel fuel is already low-sulfur, containing .05%. I think you're talking the ultra low-sulfur, which will contain .005%. Sure that will help with the soot build-up problem but what about the excessive engine failures we will see due to lack of lubrication in the fuel?

Ryan

 

A great idea in theory, but when I bought a spare EGR, hooked it up to the wiring harness and let it ride on top of the stock EGR that remained bolted into the stock position, my CEL illumated after about 6 starts and the code thrown was a 604, (innsufficient EGR flow detected). Once the CEL is on, then engine programming probably defaults to a pre-set safe mode that is slightly less powerful than the original.

Occasionally the CEL goes off for a few starts, then comes back on. I just ignore it. I would rather have a light on then an engine full of soot.

California 04 model and all testing done off road.

BTW, my in-cab idling fumes are gone after I tightened up the CAC hoses.

After looking at Ford Doctors pictures, I wonder how many intercoolers are full of crankcase oil?

One of these days, my CCV tube may get re-routed to the rear axle, but I better carry a bucket back there to catch the oil.

I just took my 6.0 on a huge trip up a mountain called Big Bear with a full load. Amazing performance out of the unit. Ran beautiful, not a drop of oil under it.

 

Is that the slight 'Skunk' smell I get in the truck and even walking around the engine compartment?

 

When the EGR isn't opening, where does the extra exhaust gas go to? Is this what you are referring to with the CCV (crank case vent ) tube? I have smelled a few trucks w/EGR unplugged and they seem to smell as though they have more blow-by like on the bigger diesel engines.

 

Regarding the Skunk smell. Yes, I believe that most of the skunk smell we experience on PSD's is the crankcase fumes with all of that crankcase oil mist that is being pressurized and forced through the CAC tubes. When the CAC tubes (or other CCV related tubes) leak, the skunky smell enters the engine compartment and when stopped, drift up to the vent intakes under the windshield. If CAC tube oil sprays on your turbo from the blue fitting adjacent to the turbo, then the smell could get magnified.

Regarding the other question about; "where does the exhaust goes to if the EGR is unplugged?" Some exhaust will sit stagnant inside the EGR cooler because it is now a dead end, but barring any leaks, the remainder of the exhaust will go through the turbo and exit out the normal exhaust pipe.

The CCV system doesn't have any common plumbing to the EGR.

The CCV system just takes the stinky crankcase gasses and vents them into the intake tube just before the Turbo. The Turbo pressurizes these hot stinky fumes and forces them through the CAC tubes to the intercooler and back. When the CAC tubes leak, the skunky smell can get into the engine bay or get sprayed on the turbo.

We already had PSD 6.0 say that he smelled the skunky smell coming from his re-routed CCV tube, so that gives good evidence that the mysterious skunky smell is from the crankcase.

 

Trixie,
I get Stanadyne performance formula mail-order from Diesel Injection Service in Lubbock, also locations in Amarillo and Dallas.

have a great day!

Tim

 

So you tightened the hoses on the blue fitting and that fixed it? That would be a great fix to a rather annoying smell.

 

In my case, tightening the blue CAC fittings near the turbo basically eliminated the skunk smell that I previously experienced when waiting/idling at Red lights. I tightened all of the CAC fittings though, not just the blue fitting, about 5 of them. I can't gaurantee that it will cure the skunk smell on all PSD's, but it certainly helped on my truck. I recommend to torque the fittings with a cold engine, or slightly warm. Not cooking hot.