The reason I write that I could use some HELP is that I am on a road-trip in the 4BT Scout. Not only do I need to actually get home, but dumping out clouds of white smoke everywhere I go in Reno is a real drag....
The title of the thread pretty much explains the problem. The 4BT is putting out a whole lot of white smoke... especially on revving the engine, but all the time really. Also, the coolant temperature gauge shows that the coolant temperature is not getting very warm, compared to "normal". (This is the stock gauge from the Scout, so no actual temp numbers on the gauge face)
Here are a few other details...
A few days ago on the way through Arizona I plowed into a pretty big snow bank, and the wire to the electric fan got ripped. As far as I know, that fan has never turned on, so I didn't fix the wire at that point. Then, later in the day, I was waiting in a really long, slow line to get into the Grand Canyon and the coolant temp gauge showed higher than ever before, but still only about half-way up the gauge. When the gauge reached that point it stabilized, even though I was still in line for another 10 or 15 minutes.
Today I put a piece of cardboard in front of the radiator, completely covering it. This helped the temps get up a little higher, but they are still considerably below normal. This might have helped the smoke a little, but not that much. I also changed the fuel filter (even though my fuel pressure gauge said I didn't need to) and this helped a little, but not much. Still lots of smoke.
I checked the oil, and I see no evidence of coolant at all. It's also not low. Also, I smelled the smoky exhaust, and it didn't smell like oil, and it didn't really smell like diesel either. It had a smell, I am just not sure what it is.
Engine power is normal, EGTs are normal, boost is normal.
Could the thermostat be stuck open??
I need the truck to get around, and to get home. Any help would be appreciated.