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Old 01-15-2005, 17:54   #1 (permalink)
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Tapping sound

Hey just a quick vague question about my 89 CPI EA engine so I can point the mechanic in the right direction incase he doesn't know much about EAs...

I have a tapping noise coming from the top of the engine, possibly under the rocker cover. It taps when I start the car up, and goes away after a while. It comes and goes as I drive and stop at lights. Sometimes I will hear it when I stop at lights, and it will fade away while I'm still stopped there.

Any ideas?
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Old 01-15-2005, 22:32   #2 (permalink)
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Re: Tapping sound

With those symptoms a lifter for sure. May go away with a simple flush (if the lifter is just gummed) or it may need replacing.
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Old 01-16-2005, 04:22   #3 (permalink)
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Re: Tapping sound

Just about every i6 falcon does it. Run some nulon lifter free with your oil on your next change. I mght not go away completely, but it'll settle it a bit. Usualy if the lifter is completely stuffed it'll run rough/miss.
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Old 01-16-2005, 04:29   #4 (permalink)
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Re: Tapping sound

It does sound like a lifter, first thing u would want to do is check for an oil leak coz this can happen due to not enough oil which tends to happen to the CPI ea's. u could try and put thicker oil in or the nulon product if it doesnt do away u may want to start thinkin about replacing them.
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Old 01-16-2005, 06:38   #5 (permalink)
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Re: Tapping sound

change mechanics
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Old 11-07-2005, 19:34   #6 (permalink)
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Re: Tapping sound

Ok, I've never opened up one of these, how can I tell if they are stuffed if I open it up? Do I need to replace any seals if I open it?
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Old 11-09-2005, 05:56   #7 (permalink)
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Re: Tapping sound

my AU makes the same noise, and its a 2nd hand engine with 80k. i start it up in the morning and i can hear a tapping sound. then i goes away, i think. i thought the oil sinks down 2 the sump and there is no oil in the head so u hear a tapping sound. then it starts following and moves to the head. let me kno if u fix it, caz i sure want to fix mine.
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Old 11-10-2005, 03:26   #8 (permalink)
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Re: Tapping sound

i have an EA same as yours 270k on the clock and it usually taps when oil is low or too thin ie ready for a service. try changing oil and keeping an eye on it. if it taps when the engine is warm chances are you need to replace the lifter seals..

AU dude

thats odd to have tapping at 80k i have an AU 127k never heard anything like that. are you using 5W-30 oil coz the E seies use 15W-40.

good luck fixing it
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Old 11-10-2005, 06:00   #9 (permalink)
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Re: Tapping sound

yea im using 5w 30. with my other engine, when i got the car, i cracked the oil pick up from the bottom of the sump using thick oil and killed the head, so not wanting it to happen again i use synthetic oil. i think ill use 10w 30 or even 15w 40 next oil change and see if there is any diffence.
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Old 12-08-2005, 22:38   #10 (permalink)
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Re: Tapping sound

I changed the oil and put in some Wynns Supreme I think it's called. It did nothing for about 4 days, but after a 1100km journey a couple of days ago it seems to be a lot quieter. Still tapping but much quieter.
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