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Old November 5th, 2007, 05:49 PM   #1
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Lifters Going Bad


my motor has a small knock and i believe it is the lifters going bad. Now if anyone thinks it could be something else id be glad to hear it but i would also like to know if anyone knows where i can buy new lifters and if anyone has a write up on how to change the lifters.
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Old November 5th, 2007, 05:55 PM   #2
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Re: lifters going bad


Originally Posted by burnout5.0
my motor has a small knock and i believe it is the lifters going bad. Now if anyone thinks it could be something else id be glad to hear it but i would also like to know if anyone knows where i can buy new lifters and if anyone has a write up on how to change the lifters.
is it a knock or a tick? sometimes the ticking can be cured by using the right weight oil (ford specs 5w-30).

as for lifters:

good: http://store.summitracing.com/partde...2&autoview=sku

much better: http://store.summitracing.com/partde...6&autoview=sku
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Old November 5th, 2007, 10:55 PM   #3
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no its deffinatly a knock and i run a mobil 1 fully syn 5w30 so its not the oil and thanks for the links ill check them out.
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Old November 6th, 2007, 09:56 AM   #4
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Bad lifters will either cause a light ticking (weak or sticking lifter) or a louder tapping (collapsed lifter) sound. A heavier knock is more likely to be from worn rod bearings (worse under load) or worn main bearings (the same or reduced under load).
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Old November 6th, 2007, 10:59 AM   #5
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well the noise is very light but very noticeable and it doesn't do it all the time and its not a ticking so idk... all i know is its not normal.
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Old November 7th, 2007, 07:52 AM   #6
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If yours is an automatic, you might wanna make sure that the torque converter to flexplate bolts haven't loosened up 'cause this can also cause a knocking sound.
Otherwise I think your engine might be showing early signs of excessive rod bearing wear. How many miles on the engine? How's the oil pressure at idle?
If you're using a light weight oil, you could try a heavier grade and see if that helps at all.
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Old November 7th, 2007, 08:32 AM   #7
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well lets see it is an automatic and im getting the tranny pulled to get more work done to it in the next week or so and my motor has about 75,000 miles on it. and the oil pressure sits right where it should ( just a little above half on the gauge) and i run a 5w30 fully syn and i just changed the oil and i added the Lucas motor oil additive to it too but i didn't seem to help.
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Old December 1st, 2007, 10:11 PM   #8
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If it gets quiet when you increase the rpm's, it could be a weak oil pump as well. It can also be caused by timing being off.
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Old December 2nd, 2007, 02:47 AM   #9
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thats good to know thanks
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Old November 5th, 2010, 02:45 PM   #10
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I am not sure about the oil pressure guages in 99+ mustangs but in the older stangs all the sending unit did was turn on and off at 6psi.

in car guage wont show you any thing but if you have pressure or not.

could be bad lifters/rockers.
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Old November 5th, 2010, 02:46 PM   #11
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oh shit you have a 04 cobra!

I hurd at 80k miles most of the 03 04 cobra's have a tick and it is able to be fixed by Ford because i beleave it is a recall issue.

Give ford a call.
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Old November 6th, 2010, 11:40 AM   #12
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Do you realise that you've just revived a 3 year old thread?
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