Why does my Isuzu NPR 4 have smoke in it?
Why does my Isuzu NPR 4 have smoke in it? -Normally means the fuel being injected into the cylinder - is not burning correctly. The smoke may be strong and/or burn your eyes as well. Possible Causes: 1) Engine pump, (diesel fuel pump) timing is out. 2) Fuel starvation to the pump. Air (trapped) in system or being drawn in. 3) Low engine compression. 4) Water or gasoline in fuel. Why does my Isuzu NPR diesel engine not start? If it starts with one of the fuel lines to the injector capped, you know that that injector is allowing fuel...