I'd trade mine in for a D-max if i could afford the higher payments. Love to see that black smoke rolling out. It's a sheer sign that you mean business.

 

What's the deal with washing out the rings on a Diesel? If you run a gas engine too rich you'll wash out your pistons, pressurize your crankcase and possible blow your oil pan out right? What's stopping that from happening with the Diesels since they are over fueling it to death?

 

Don't forget they have compression ratios in the teens, plus diesel engines inject fuel over 20,000 PSI... I "THINK" that the black smoke is a characteristic of the fuel, it will burn black if the proper fuel air mixture is not kept. (although the ratio is changine all the time)

I think you would see cylinder wash at the point of miss-fire...

Isn't that true with gas too?? As long as the cylinder fires, it doesn't matter how rich it is, it won't wash the cylinder?????

 

diesel fuel is pretty much oil and methonal mix so its just like a gas car burning oil it burns black

 

a gas engine if you over fuel it, even if the cylinder fires the extra unburned fuel taht doesnt make it out the exhaust breaks down the small lubricating film of the cylinder walls and could cause premature ring wear, or complete cylinder failure... not to mention the overload of carbon buildup that will happen.... im sure most of us have seen a spark plug on an old carb'd motor that was running rich... starts to blacken, and as the wings start to get washed out more oile will blow through the rings and build a sludge on the plug, and that is when you atrt getting the white/blue smoke


i think, but dont quote me on this, is that with the high compression, and obscene boost pressures, diesels tend to have much tighter rings, and much harder cylinder walls, therefore even excessive over fueling wont necessarily wash down a cylinder wall on a diesel

 

Even if the cylinder walls are washed down on a diesel the fuel will just relubricate it anyways so the walls will always have something on them right? I mean you can't wash out a lubricated surface with a lubricant right?
That makes alot more sense to me, now I'm wondering what the carbon build up on pistons would look like on a diesel if any. I'm sure the headers and exhaust would look pretty nasty too!

 

THERE WOULDNT REALLY BE A CARBON BUILD UP ON THE DIESELS....

 

Por que? or is that a stupid question?
I've sat on a piston with a hand grinder getting the carbon off the crown before, then again they ran alot of Bunker C fuel and MDO only when coming into port.

 

WELL YEAH ADDITIVES WILL MAKE ALL KINDS OF CRAZY DEPOSITS

 

The fuel is not a lubricant, yes it lubricates the pump. It also Seals the psiton scrolls in the pump...

The viscosity of diesel fuel in far to low, plus if doesn't have all the additives found in normal oil...

As for carbon, there is usally some much built up, you can't get the piston out of the bore until you "Decarberize" the cylinder wall.