Detroit 8.2L diesel - "The Fuel Pincher"

I didn't see your dash. I have a dash cluster for that truck that includes. Tach, psi, fuel, voltage, etc. Its been sitting on the shelf for 25 years. If you want it its yours.

K this will start a a whole lot of feedback. Just a suggestion and great for multiple videos plus it will be fun. 6bt swap. Dump the Detroit and upgrade, rear axle ratio might be an issue. I learned how to drive on a 6v71. Had a few 8v92's in the fleet. Not a good design, fuel burners and spendy to work on.

Jon, I googled the problem with your truck. Yes it said fuel pump could be one issue. But it also added that the O-rings on the injectors could also be the problem and the fuel lines could have cracks that could allow fuel into the oil pan.

I had to sub to see what the problem is.

I went back and watched some of your videos back when you bought the truck and you mentioned getting fuel in the oil. That motor will have unit injectors under the valve covers, they should have small fuel lines going to them. I will be willing to bet it least one of those lines is loose or cracked. You should be able to check and or tighten them without to much work. The other thing you can check is the fuel pump, it may be leaking into the motor. This motor doesn't use an injector pump, it has a fuel pump to supply fuel to the injector, and the injectors are camshaft operated. There is a governor unit that controls the fuel to the injectors, it should have a rod coming from the Governor housing into each head to operate the rack. Very similar to the way the 2-Stroke Detroit's work. I was a Truck and Diesel Equipment mechanic for about 20 years. My knowledge of this motor is limited because they were not very popular, and not many were around. I only remember working on 2 trucks with this motor and I never was into the motors of either of them. And both were in Ford Trucks. HAHAHA

I hate to even suggest this.....but is there any conceivable way to swap a 4-71 in there? HP would be nearly the same even without a turbo and the truck would basically become an heirloom......after you finished fighting the brake demons and the electrical demons and the power steering demons and the miscellaneous sub-gremlins. You know what....maybe don't do that.

If you can't find somebody to fix it, a good replacement would be a 3208 Cat motor, at least you can get parts for them. You may be able to find one that was build just for your truck.

There are several problems with the 8.2 DD motor. As I mentioned before they are famous for blowing Head Gaskets. The top of the block is open to the water jacket. the motor has no cylinder liners, and each cylinder only has 4 head bolts instead of 6. GM made about 60,000 extra motors as replacement motors but they are mostly gone. These are very similar to the 2-stoke motors and the overhead uses same of the same parts. This is one of those engines you don't walk away from you run away from.

Bus grease monkeys are near you, specializing in DD

The guy at Diesel Creek (YouTube) is an expert in these engines.

There are 2 YouTube channels I would recommend for help would be Ol2stroker, and Bus Grease Monkey.

That motor was NOT a very good design, they were a throw away motor. I believe the use the same timing pins as the 2-Stroke Detroit Diesels used. But I Don't know which pins was used. There were a couple of different ones. The biggest problem with the motor were head gaskets.

Have you tried asking DieselCreek? Seems up his alley.