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Every 3208 smokes on start up and at idle, there isn't much you can do about it.
The engine was designed with oval shaped pistons. As the engine warms up, the pistons expand and become round.
This design characteristic is one of the reasons so many of the 3208's in school bus service smoke so much more than engines used in different applications. Very few school buses ever work hard enough to really warm up properly. Since they never really warm up, the pistons never fully round out. Since they never really round out they tend to oval the cylinder. Once the cylinder is ovaled, nothing you can do on the fuel injection end will stop the smoking.
The oval piston design is also the reason why 3208 engines can be so difficult to start at high altitude or in cold temperatures.
Unless and until the piston rounds out, you never get full compression. Without full compression you never get full fuel burn which results in smoke.
Good luck on your project.
Mark O. |
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