Ford C-MAX car not pulling and black smoke

2004 Ford C-MAX Problem

CarFord C-MAX 1.6 tdi
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My car is not running correctly. When I turn on the engine it is juggering. When I pull off it is blowing black smoke out of the exhaust. I have already changed the ecg valve but this has not solved the issue. Has anyone else come across this problem?
Problem Category
Running Rough, Starting & Power Loss

Solution 1
whittingehame | Legend | Since: Oct 2009 | Posts: 444 | Fixes: 11792 | View Garage
Suggested Solution

Black smoke is the most common smoke emitted from diesel engines. It indicates poor and incomplete combustion of the diesel fuel. There are many causes, including…
Incorrect timing

Dirty or worn injectors


Faulty turbocharger (ie not enough air to match the fuel)

Incorrect valve clearance

Incorrect air/fuel ratio

Low cylinder compression (eg sticking piston rings or worn components)

Dirty air cleaner

Restricted induction system (eg system too small or kinked inlet piping)

Other engine tune factors

Poor quality fuel

Excessive carbon build up in combustion and exhaust spaces

Cool operating temperatures

Obviously, worn or damaged components must be replaced, and the earlier you identify and fix the problem, the less damage will be done. Keep on top of engine tune issues, including valve adjustments, and regular servicing of air, fuel and oil filters. Do not buy fuel from suspect outlets. Dirty components, such as injectors can be easily restored to full cleanliness by using an effective and reliable fuel system cleaner. If you choose from our range of products, Cleanpower is what you need.

Cleaning of internals of engines has usually only been possible at overhaul, however, Cost Effective Maintenance provide two products to enable vehicle and equipment owners to quickly, safely and cheaply restore full cleanliness to combustion and exhaust spaces (FTC Decarbonizer) as well as piston rings, oil pumps, oil galleries, oil coolers, piston skirts, valve gear, etc (Flushing Oil Concentrate).

Black smoke is high in carbon or soot, which is an undesirable product of diesel combustion. Now, the combustion of diesel is a complicated process of breaking down the various hydrocarbon fuel molecules into progressively smaller and smaller molecules, by burning in the presence of oxygen. The main and ideal end products of combustion are CO2 and H2O (carbon dioxide, the greenhouse gas and water). It is believed that the last step in the process is carbon monoxide (the poisonous gas) to carbon dioxide. This is also the slowest step by far, and when combustion conditions deteriorate some upstream bottle necking occurs in the chain of combustion reactions. This results (according to some authorities) in polymerization of smaller partly burnt molecules into much larger ones, which become visible as soot, or black smoke.

Posted on Monday 3rd of August 2015
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