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Old 03-07-2012, 09:48 AM   #1
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Default Antifreeze mixing with spark plugs!! HELP!!

So my father has a 2001 F150 Lariat with 5.4L and i have a 2000 F150 Lariat with the 5.4L... His truck started doing this awhile back probably around 145K miles and he now has 165K miles...Some reason he is getting antifreeze in the ports where the spark plugs sit... and it files out the spark plugs and makes the truck run like a dog!! my truck has 160K miles and it just started doing the same thing... My fathers truck has thrown codes for every cylinder..meaning antifreeze is getting to each sparkplug and filing it out... my truck has only thrown cylinder 5,6,&8 so far...changed those yesterday and runs like a new truck again!! i am looking to see if someone can point us in right direction as to where these leaks are coming from... My father has replaced the coolant hoses already before and it slowed down the leaks but now it appears the leaks are constantly returning again... Has anyone else experienced this problem and found the source of the leak?? All help is greatly appreciated!!
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Old 03-07-2012, 11:01 PM   #2
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Most likely Intake manifold cracked or gone bad. I have a 2000 with 5.4 doing the same thing. Cost me 650.00 to have it changed. But it was the only time the truck has ever been in the shop other than having the spark plugs cahnged once. 138,00 miles.
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Old 03-07-2012, 11:33 PM   #3
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Most likely Intake manifold cracked or gone bad. I have a 2000 with 5.4 doing the same thing. Cost me 650.00 to have it changed. But it was the only time the truck has ever been in the shop other than having the spark plugs cahnged once. 138,00 miles.
Thanks for the response HankHill....i had a feeling that it was the intake but wanted to see if it was something else first.... not sure if i'm going to replace that intake or not...maybe its just a sign to just trade the F150 in on that Powerstroke iv been wanting...LOL!!! although i do not want those high payments each month!!
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Old 03-08-2012, 08:19 AM   #4
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Thats definitely the intake man, there are coolant ports that run in that area, right next to the SP holes. If you're mechanically inclined in any way you should try to DIY, its really not that hard, its just a lot of stuff to take off!
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Old 03-08-2012, 09:33 AM   #5
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Thats definitely the intake man, there are coolant ports that run in that area, right next to the SP holes. If you're mechanically inclined in any way you should try to DIY, its really not that hard, its just a lot of stuff to take off!
Yeah seriously they aren't that hard, just taking all the **** of the top is annoying .
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Old 03-09-2012, 07:54 AM   #6
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Thats definitely the intake man, there are coolant ports that run in that area, right next to the SP holes. If you're mechanically inclined in any way you should try to DIY, its really not that hard, its just a lot of stuff to take off!
Thanks for the reassurance on this problem jb451.... im pretty mechanically inclined and will be doing this myself...any idea of a good place to get a new intake at a reasonably decent price? Thanks again for the help
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Old 03-09-2012, 08:02 AM   #7
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found one on RockAuto made by Dorman Part # 615188 for $187.89 and it comes with the new gaskets...seems like a good deal but would like to find out how much i can get a OEM Motorcraft for!!
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Old 03-09-2012, 08:39 AM   #8
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if thats the upper & lower id jump on that!! mine was around 300, soon as i get up i'm going out to replace mine myself.
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Old 03-09-2012, 06:00 PM   #9
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I got the Dorman one on my truck from Rock Auto, although i hate how the screw holes are just plastic, there is no metal liner with threads, so im a little worried that the plastic might come out one day and i can't thread the holes anymore....

I know my buddy who owns a mustang got his for a little less than the rock auto one from a local ford speed shop, and it was a real nice OEM one.... Dunno about motorcraft though! I would think the dealer is a hell of a lot more expensive!
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Old 03-09-2012, 11:22 PM   #10
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I got the Dorman one on my truck from Rock Auto, although i hate how the screw holes are just plastic, there is no metal liner with threads, so im a little worried that the plastic might come out one day and i can't thread the holes anymore....

I know my buddy who owns a mustang got his for a little less than the rock auto one from a local ford speed shop, and it was a real nice OEM one.... Dunno about motorcraft though! I would think the dealer is a hell of a lot more expensive!
my original one didnt have the metal liner nor does the dorman replacement..
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Old 03-09-2012, 11:22 PM
 
 
 
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