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RPM's on startup
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<blockquote data-quote="Wingless99" data-source="post: 58245" data-attributes="member: 2464"><p>I hear the "valve train" noise on startup also. I am the second owner and bought the car at 32K miles and now have 33K miles on the engine. (The car has other problems as well which I plan on having fixed before the 36K warranty expires, it has the "vibration" which starts in around 55 - 60mph and does not go away with more speed, it has a lot of slack in the driveline in ALL gears, clunking o'plenty when shifting or getting on or off the throttle. ) Sorry I digress, back to the subject at hand.</p><p></p><p>Another couple of things to consider. I found this bit of info in the Mustang "Owner's Guide". It states:</p><p></p><p>"Ford production and aftermarket (Motorcraft) oil filters are designed for added engine protection and long life. If a replacement oil filter is used that does not meet Ford material and design specifications, startup engine noises or knock may be experienced.</p><p></p><p>It is recommended you use the appropriate Motorcraft oil filter (or another brand meeting Ford specifications) for your engine application."</p><p></p><p>A few thoughts on this statement come to mind:</p><p></p><p>1. Perhaps the "Motorcraft" oil filters have a "one-way" valve that keeps the oil up in the oil galleries and if an aftermarket oil filter is used that does not have the "one-way" valve then it take longer for the oil to get up to the valve train resulting in the "startup engine noises or knock".</p><p></p><p>2. By making this statement, Ford has made an easy way to get out of warranty on your engine problems because you used an aftermarket oil filter that did not meet "Ford specifications". (Nice trump card)</p><p></p><p>3. This is statement made which will sell more Ford/Motorcraft Oil Filters. (Put the fear into them.)</p><p></p><p>I have also read at a site elsewhere on the net regarding timing chain tensioners on the 4.6 DOHC motor being on the wrong side of the chain (the tension side vs. the loose side) and causing pre-mature streching of the chain which results in "noise" and I suppose could ultimately result in worse problems. There is a company that sells an aftermarket kit to correct this "design mistake". I do not know how credible this info is though (the site mentioned 9200 RPM regarding the engine, yikes).</p><p></p><p>The site is:</p><p></p><p><a href="http://www.gulftel.com/vnomsss/topnews/camshim.htm" target="_blank">http://www.gulftel.com/vnomsss/topnews/camshim.htm</a></p></blockquote><p></p>
[QUOTE="Wingless99, post: 58245, member: 2464"] I hear the "valve train" noise on startup also. I am the second owner and bought the car at 32K miles and now have 33K miles on the engine. (The car has other problems as well which I plan on having fixed before the 36K warranty expires, it has the "vibration" which starts in around 55 - 60mph and does not go away with more speed, it has a lot of slack in the driveline in ALL gears, clunking o'plenty when shifting or getting on or off the throttle. ) Sorry I digress, back to the subject at hand. Another couple of things to consider. I found this bit of info in the Mustang "Owner's Guide". It states: "Ford production and aftermarket (Motorcraft) oil filters are designed for added engine protection and long life. If a replacement oil filter is used that does not meet Ford material and design specifications, startup engine noises or knock may be experienced. It is recommended you use the appropriate Motorcraft oil filter (or another brand meeting Ford specifications) for your engine application." A few thoughts on this statement come to mind: 1. Perhaps the "Motorcraft" oil filters have a "one-way" valve that keeps the oil up in the oil galleries and if an aftermarket oil filter is used that does not have the "one-way" valve then it take longer for the oil to get up to the valve train resulting in the "startup engine noises or knock". 2. By making this statement, Ford has made an easy way to get out of warranty on your engine problems because you used an aftermarket oil filter that did not meet "Ford specifications". (Nice trump card) 3. This is statement made which will sell more Ford/Motorcraft Oil Filters. (Put the fear into them.) I have also read at a site elsewhere on the net regarding timing chain tensioners on the 4.6 DOHC motor being on the wrong side of the chain (the tension side vs. the loose side) and causing pre-mature streching of the chain which results in "noise" and I suppose could ultimately result in worse problems. There is a company that sells an aftermarket kit to correct this "design mistake". I do not know how credible this info is though (the site mentioned 9200 RPM regarding the engine, yikes). The site is: [url]http://www.gulftel.com/vnomsss/topnews/camshim.htm[/url] [/QUOTE]
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