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The camshaft VCT (phaser) design was changed to improve reliability and reduce the development of an engine start-up tapping/rattling noise over time. Ford uses a single piston cooling jet per cylinder, but the oil volume was increased. The underside of the pistons were also redesigned to better transfer heat into the oil.
Timing chain rattle was mitigated in later years of the SOHC (in most vehicles, after 2002) with updated cassettes and tensioners. This problem occurs with varying frequency among some Ford vehicles equipped with the SOHC engine including the Ford Mustang, Ford Explorer, and Ford Ranger. The 4.0 OHV was not affected by this issue. [6]
In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
There are a number of potential problems with hydraulic lifters. Frequently, the valvetrain will rattle loudly on startup due to oil draining from the lifters when the vehicle is parked. This is not considered a significant issue provided the noise disappears within a couple of minutes; typically it usually lasts only a second or two.
The engine is a modified version of the Ford Duratorq 3.2L diesel engine that has been adapted to meet emissions in the United States. To aid in economy, emissions, and reduce NVH , it has a high-pressure common-rail fuel injection system and piezo injectors that can spray up to five different injections per compression event.
“The repair costs, especially for off-road equipment, are quite high.” Consumer Reports estimates the 2025 model to be less reliable than the average new car, including similar models like the ...
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...
Related: 16 Games Like Wordle To Give You Your Word Game Fix More Than Once Every 24 Hours We'll have the answer below this friendly reminder of how to play the game .
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