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SportTrac Discussion
Sport Trac Registry
2003 Explorer Sport Trac XLT 4.0L 4WD Build/Maintenance thread
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<blockquote data-quote="parker_lansing" data-source="post: 1051379" data-attributes="member: 78464"><p>Wow, you just answered questions I didn't even know I had! Thank you for all of this information. I was especially concerned about the timing chain issues - I've heard that if one fails it can junk the entire engine. I'll get this other work scheduled as well.</p><p></p><p>I do have one concern about reversing the heater hoses - if there really is some junk built up, wouldn't reversing the flow force that junk into the engine block? It seems to me that the safe bet (not knowing the history of the maintenance on my vehicle) would be to do the coolant drain/flush and replace the heater core as needed, instead of reversing the hoses.</p></blockquote><p></p>
[QUOTE="parker_lansing, post: 1051379, member: 78464"] Wow, you just answered questions I didn't even know I had! Thank you for all of this information. I was especially concerned about the timing chain issues - I've heard that if one fails it can junk the entire engine. I'll get this other work scheduled as well. I do have one concern about reversing the heater hoses - if there really is some junk built up, wouldn't reversing the flow force that junk into the engine block? It seems to me that the safe bet (not knowing the history of the maintenance on my vehicle) would be to do the coolant drain/flush and replace the heater core as needed, instead of reversing the hoses. [/QUOTE]
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SportTrac Discussion
Sport Trac Registry
2003 Explorer Sport Trac XLT 4.0L 4WD Build/Maintenance thread
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