The engine on a 2012 Ford Escape was much different than the first generation Ford Duratec engine back in 1993 when it first came out. The Ford Duratec engine had several improvements and variations during its life span. For example, Ford installed the 2.0L engine in many of these models. Not all these models were equipped with the 3.0L engine. There may be other Ford models equipped with the 3.0L six-cylinder engine. 2005-2007 Ford Five Hundred, Mercury Montego, and Ford Freestyle.2001-2005 Ford Escape/Mercury Mariner/Mazda Tribute.The next Ford cars, vans, and trucks have the Duratec engine. The Duratec V6 engine is simple in design and not the most fuel-efficient, but it still has a low number of complaints and issues. In fact, due to its reliability, it was widely used in many Ford vehicles for decades. The Ford Duratec 3.0 V6 is a reliable engine. Maintenances, don’t expect excellent performance. Like any other Car or Truck or even a Motorcycle. They were really, for all the issues listed, a pretty good engine if you took care of them. The exhaust leakage from broken bolts that would have to be extracted could become more intense if cylinder head removal were needed. Manifold GasketsĪnother common one was the exhaust manifold gaskets. It worked for about a week of normal driving, and then the issue was back. Ford issued a TSB that involved centering the cam and retorquing the cam caps. The occasional camshaft would float back and forth, causing a noise. Engine NoiseĮngine noises were common if the timing chains and tensioner hardware were worn due to lack of maintenance. The 3.0 DOHC is an interference engine in other words, it is not a free-rolling engine. It is recommended to replace a COP and spark plug simultaneously because it may cause the COPs failure. Misfires that trigger the check engine light on and P0300 – P0306 fault codes were expected due to failure of either the COPs (Coil on plugs) or the spark plugs themselves. Valves will break, and the engine will not start without a complete overhaul. If timing jumps, the timing chain tensioner fails, timing chain breaks, you will end up with a catastrophic failure. This results in failure from oil starvation to all components seizing, including camshafts, requiring engine replacement.
The timing chain tensioners would wear and cause some severe issues.Ĭhains being loose and guide material falling into the crankcase clogging the sump. Noises from the front timing cover showed that lack of maintenance. Most of all, the issues were really from a lack of care by the owner. The 3.0 DOHC did have some Hydraulic Lash Adjusters (Lifters) that collapsed and made noises. Generally, such failures were due to a lack of maintenance, which led to viscosity breakdown of the oil and sludge build-up. The oil leaks are expected at the following: The approved procedure, but I have seen it done with varying results. In that case, the heads were put on a belt sander. If the engine did have a blown head gasket, the head was usually not reusable due to warpage. These problems caused overheating conditions which led to possible engine damage. heavy traffic where the vehicle was stopped for long periods.cooling fans failed in low-speed driving.Overheating engine issues are typically caused by one of the following: Occasionally scored cylinder walls from an overheating or oil starvation issue were present but had not yet revealed any symptoms to the owner. On high-mileage Duratec V6 engines, it is not uncommon to find worn timing chains and tensioner guides. Replacing burned valves is a labor-intensive repair, often resulting in other discovered issues during the engine tear down. One of the most common problems with Ford 3L V6 Duratec engines is misfires that were not ignition or fuel-related.Īlso, it is not uncommon to see Ford 3.0 V6 Duratec engines with burned exhaust valves. There are a few issues to watch out for if the Duratec 3.0 L engine has been neglected or has high mileage. This article will discuss the most common problems that affect Ford 3.0 engine explained by Ford master mechanics.įord 3.0L Duratec can be a reliable engine up to 100,000 miles when well maintained. The Ford 3.0 Duratec, also known as the Mondeo V6, is an aluminum DOHC V6 engine used on several Ford vehicles from 1993-2012.
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