Low Power 1986 DT466C 400k miles

I never saw one in a truck without a turbo and would only thank dzinger missed that because you do not hear them like a Holset and they are tucked in pretty close.
That series of engines was made for many years ,sizes, and applications. Early 70's? through today?. 360, 408, 414, & 466. They like to operate at about around 23-2700 RPM but many options and you said yours is a C which could be a little different.
What would cause low exhaust temps? Air inlet and or exhaust restriction. Low compression. Lack of fuel. Timing.
Just buy a new air compressor filter.

 

Every dt466 I've driven would have the fuel pump mess up every week. Trying to merge on the expressway at 25 mph is no fun.

 

Same here. Those engines are garbage. I've driven them in plow trucks and concrete trucks. They use more fuel, have less power, and break more than every other engine put together. Pure junk.

 

Thanks for the update. I will look at the one I bought used about 18 years ago.

 

Hi, I'm new on this board but I have owned and run a bunch of Dt466s.
First off the Dt stands for Diesel Turbocharged,466 is cubic inches. Most of the C series motors were rated at 190-210 hp some higher but they were intercooled
These are good motors within limits.
If they get pushed hard the injection pumps starve a cylinder and burn a piston.
For some reason tow truck and transport drivers like to idle these motors nonstop. I had a 4300 series rollback that the driver asked my why he was using 2-3 gallons of oil a day and had no power. The odometer said 170k the hour meter said 11k hours(the equivalent to 500,000 miles) put a fork in that motor it was due for an infra me.
The valve cover should have a label telling you motor type,hp, pump setting etc.
The Dt 466 had a smaller version the Dt360 it was 360 cid and max at 160hp.
We had an IHC4900 4 car +1on the stinger that looked like yours It had a 300 hp Dt 530 that was fresh and turned up some with a Raodrsnger 8LL TRANS and that truck was geared for 65 mph it could barely get out of its own way.
We used that truck for auction transport If it had been limited to running to Fredericksburg and back on 95 it would have been gone!
But it was easy on fuel cheap to fix and worked every day.
That's all I can remember now good luck.