Need some wisdom from the mechanical Cat guru's.
I have a 3406B with 40,000 miles on a complete out of frame rebuild performed at CAT with just the block, connecting rods and crank reused.
Getting some blueish grey smoke at idle and while running down the road for the first few minutes it runs, the colder the weather the worse it is. Did 4 or 5 hours nonstop this morning, sat for an hour getting loaded and it smokes again after we fired it up. Blew thick smoke for a mile or two then absolutely nothing for the next 5 hours I followed the truck home.
CAT says this is normal and it's just the rings expanding. They also told us there is nothing that can be done aside from turning the HP down. They also reminded me they have not seen one of these engines in over 12 years.
I've looked at a few other 3406B trucks for sale locally (for comparison) with various amounts of mileage and rebuild states but they don't smoke, at all. Black puff at idle and while shifting but that's it.
Curious what would cause this thing to smoke? Also curious if somebody can recommend a CAT guru in NY, PA or NJ who is familiar with the 3406B.
I'd like to add that this truck pulls just fine, burns one gallon of oil in 10,000 miles (break in?), and no drop in mileage. No ID# on this engine, CAT seems to think it's an 8PN. Took the block down to bare metal, no #'s.
See photo below for example of smoke. This is after running for 4-5 hours on the HWY then sitting for an hour with the engine off at 40*F.
Mechanical CAT, smoke at idle
Discussion in 'Trucks [ Eighteen Wheelers ]' started by zx150, Nov 17, 2016.
Page 1 of 8
-
Attached Files:
Last edited: Nov 17, 2016
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
-
-
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
Page 1 of 8