What is Powerstroke?

English: Ford Motor Company Headquarters, Dear...

English: Ford Motor Company Headquarters, Dearborn, Mi. The Glasshouse; built in 1956, architect: Skidmore, Owings & Merrill LLP (Photo credit: Wikipedia)

Power Stroke is the name that Ford Motor Company has given to its diesel engines since 1994.

Ford Power Stroke engines can be found in Ford Super Duty trucks, Econoline vans, Excursion SUVs, and LCF commercial vehicles.

In 1994 that the 7.3L Power Stroke diesel was first released. The Power Stroke is a direct injection engine that is electronically controlled. It has a 104 mm bore and 106 mm stroke that creates a displacement 444 cubic inches. Its compression ratio is 17.5:1 and weighs about 925 lbs. The 7.3L Power Stroke was used until the middle of 2003 when it had to be replaced by the 6.0L Power Stroke due to new emission requirements that the 7.3 could not meet.

Unfortunately, the 6.0 has been known to experience blown head gaskets and eventually cracked cylinder heads. Ultimately these problems were attributable to the fact that the 6.0 only had 4 head bolts per cylinder, but it was the “domino effect” that lead to such failures. A lot of the issues with the 6.0 started because Ford used sand cast molds. Many times left over sand would clog the oil cooler, which would take out the EGR cooler. When the EGR cooler ultimately went bad, it would pump the coolant thru the engine. When enough of this coolant got into the engine, it would pressure those head bolts allowing the head gaskets to blow. These Ford engines got a bad reputation because of these failures, many of which were due to improper service bulletins. Ford did not make it standard procedure to replace the oil cooler. There were repeated failures until Ford used new concepts in repairing the trucks.

It was in 2007 Ford that presented the 6.4 Power Stroke. This new edition was once again made necessary because of emission regulations. Ford was able to increase horsepower with the 6.4 Power Stroke, in spite of these new emission restrictions. The 6.4L has had a significant recall. It was due to the potential for actual flames to come from the tailpipe. A PCM recalibration is necessary to eliminate the problem caused by high temperatures that combine with other conditions to create what is known as the “thermal effect”.

Ford Power Stroke engines were manufactured by Navistar until 2010. In that year, Ford decided to make the engines at their Mexican production facility. These 6.7 liter Power Stroke engines are now primarily utilized in the Ford Motor Company’s full sized pick-up trucks in the United States.

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