Originally Posted by Hondalee
I looked at one of your older posts and saw you have the detroit 6V92 any suggestions you may have for me with my 8V92?
What kind of milage do you get with the 6V92?
What temps do you run? Is it the dec3?
I know mine has a switch to increase rpms when Ideling for over 10 min but I don't remember how to do it,do you have the same setup? I could use some help!
These are great old engines that will last forever with proper care. But they have a few quirks. Engine oil and coolant type MUST BE the proper kind. They have "wet" cylinder liners (the liner is exposed to the coolant, not sealed in the block) that will be quickly ruined by the wrong type of coolant. My engine was rebuilt at 120K miles because the previous owner used the wrong coolant. The coolant I have says Detroit right on it. Not sure where else to buy it. I am sure there is an equivelent, but I don't know what it is. Speaking of the cooling system, I noticed on my rig the 3" water pipe that goes from the bottom of the side radiator to the engine is getting rusty and will need to be replaced soon.
They also put a much higher than normal "shear" on the engine oil, so the oil MUST be recommended for 2 stroke diesel engines, or you will ruin bearings very quickly. Dello makes one, I plan to use Schaeffer when I change mine.
Also, they do not use glow plugs and can be tough to start below 35 degrees. The best plan is to keep it warm if you need to start it when its cold, NEVER spray either in to the air intake without the engine being cranked over, or BAD things WILL happen. Best to avoid if possible.
White smoke out the exhaust when cold starting is normal. I thought it was a problem with mine, but I learned the fuel rail goes wide open when cranking, and the smoke is just unburned fuel.
They ALL leak oil. Always will. Get a pan.
Mine is a DDEC 2. Not sure what the difference is.
I can get up to 10 MPG on flat ground running 60 MPH with no trailer. But every where I go, there are multiple mountain passes. Mileage is 7 to 8 then. But since I almost always boondock, I calculate my fuel costs at 6 MPG.
Water temps run 190 to 200.
I have a switch on the left side panel that I push up to engage fast idle. Must be in nuetral with brake set. Its labeled "fast idle."
A few people tried to discourage me from buying this rig because of the noisy, smokey, leaky engine. But I have had a lot of experiance with them during my long truck driving career. I have never seen a properly maintained one fail. They are still one of the most common powerplants in the world (think fishing boats), and Detroit has commited to parts support for 50 more years. Who else can say that? Parts are also a lot cheaper. You can buy a fuel injector for around $100. An injector for a CAT is over $600. Good luck with your rig!
Let me know if you ever have any more questions. I am not an expert, but I have a lot of opinions