What color smoke will come out of the exhaust if the engine is running too rich?
Black smoke
Black smoke is a telltale sign that your air-fuel mixture is too rich. There are a few different underlying reasons that could cause this. They range from leaking injectors, which introduce too much fuel into your combustion chamber or a problem with the engine management system causing it to supply too much fuel.
Why does my diesel smell rich?
One of the first things you may notice is a strong smell of fuel or rotten egg smell from the exhaust. This is due to excess fuel not being burned properly in the combustion process and escaping into the exhaust manifold and ultimately out of your tailpipe.
Can a diesel run rich?
Diesels can run rich or lean despite having no throttle. The mixture is completely unrelated to the presence or absence of a throttle. In a modern direct injection diesel, the thing that enters the cylinder on the inlet stroke is air (sometimes mixed with EGR). That’s why they call it a ‘compression ignition’ engine.
What causes a carbureted engine to smoke?
If the engine has had any work done to the piston rings, the head gasket, or if it has been overfilled with oil, it can cause a pressure build-up inside the crank case. This will result in oil being forced out into the carburetor, and this will cause black smoke to be emitted.
Why is my VW Jetta making black smoke?
Engine loss of power, black smoke from exhaust and pinging noise from engine vehicle stalled a few time in traffic almost causing an accident with other vehicles driving vehicle to work, started making noise and decided to drive to vw dealership. Dearlership first diagnosed the problem as a bad clutch.
Where does the exhaust smell come from on a Volkswagen Jetta?
Diesel exhaust smell enters cabin through interior climate control vents. Smell is originating from rear of engine, smell is pure un treated diesel exhaust. Dealer has replaced several components but to no avail. Unable to find any sign of leak with smoke or pressure testing.
Are there any problems with the Volkswagen Jetta?
See all problems of the 2014 Volkswagen Jetta . Tl- the contact owns a 2009 Volkswagen Jetta. The contact noticed a fuel odor from the trunk area. The vehicle was taken to the dealer where it was diagnosed that the engine exhaust flap needed to be replaced.
Is there a leak or heat in my Jetta?
White smoke coming out of the air vents, hood and exhaust pipe. It smells like antifreeze and when i poured some in before, it disappeared somwhere… is there a leak or heat … read more Re 1998 Jetta TDI with AHU engine. It has a newly rebuilt Re: 1998 Jetta TDI with AHU engine. It has a newly rebuilt infector pump and injectors.