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SportTrac Discussion
General Sport Trac Discussion
200,000 mile ST
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<blockquote data-quote="Yardsale " data-source="post: 1014517" data-attributes="member: 58988"><p>Do you mean that the tensioners currently installed may not always work or that replacing them may not always work to correct the problem?</p><p></p><p></p><p></p><p>That two-second rattle at cold start is an indication of the tensioners (the spring-hydraulic tensioners) spring having lost their sprung. If it is these tensioners, they do not work intermittently; they slowly die and take the timing chain guides with them over time. Timing chain guide replacement is something you want to avoid. There may be other problems, or a different problem, as well. Not an exact science.</p><p></p><p></p><p></p><p>The pinging at 3000 RPM is more likely a valve or ignition timing issue and there is a long list of possible culprits (fuel, sensors, timing chain(s), non-hydraulic tensioners, etc.).</p></blockquote><p></p>
[QUOTE="Yardsale , post: 1014517, member: 58988"] Do you mean that the tensioners currently installed may not always work or that replacing them may not always work to correct the problem? That two-second rattle at cold start is an indication of the tensioners (the spring-hydraulic tensioners) spring having lost their sprung. If it is these tensioners, they do not work intermittently; they slowly die and take the timing chain guides with them over time. Timing chain guide replacement is something you want to avoid. There may be other problems, or a different problem, as well. Not an exact science. The pinging at 3000 RPM is more likely a valve or ignition timing issue and there is a long list of possible culprits (fuel, sensors, timing chain(s), non-hydraulic tensioners, etc.). [/QUOTE]
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SportTrac Discussion
General Sport Trac Discussion
200,000 mile ST
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