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NA (1989-1997) NA Miata discussion within. The MX5's first generation, the NA, sold over 400,000 units from 1989 to 1997.

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Old 05-23-2012, 09:23 PM   #11
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here is the guide to cleaning them, be very careful and take your time. i don't recall what used price is but new they are $18 dollars a piece, im sure in Hawaii they are much more.
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Old 05-23-2012, 10:27 PM   #12
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so I should just do both ?
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Old 05-23-2012, 10:29 PM   #13
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And thanks for the link ill study it befor i get started.
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Old 05-23-2012, 11:04 PM   #14
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Originally Posted by Fisto Roboto View Post
so I should just do both ?
Try oil first, Then if it still does it all the time go for the lifters. Mine ticks here and there usually on a hot restart for around 30-40 seconds.
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Old 05-24-2012, 12:17 AM   #15
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will it hurt the motor if i drive it befor i change the oil
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Old 05-24-2012, 05:25 AM   #16
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will it hurt the motor if i drive it befor i change the oil
Obviously check to make sure there is oil in the motor before you do much, but as long as there is I dont see why not. I would definitly get it changed ASAP though.
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Old 05-24-2012, 09:27 AM   #17
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the noise is simply the lifters making contact to the cam lobes...

we have hydraluic lifters that compress down as they hit BDC and expand back as they reach TDC again. Problem is they get gunked up with oil and stay compressed, so as the lobe rides down on them, they stop making continous contact and the noise you are hearing is them tapping together.

Some say that changing oil weights will help, but I've never bought into it. You must decompress your lifters. They get really nasty and require a thorough cleaning in order ot get them to spring back into life again in a lot of cases. Last time I did mine I had 6-9 "solid" lifters. Mine have been noise free since.

I have a feeling the chaning of oil weights is a placebo, as lifters will tend to make noise if your oil is low anyways. So obviously, change your oil and volia, no noise for a while.

this is normal and you can ignore or fix.
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Old 05-24-2012, 01:14 PM   #18
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My lifters were making a lot of racket when I bought my car because it had been sitting a long time. Fresh oil change with synthetic Rotella made it quiet within 50 miles or so. Rotella and other diesel engine oils are higher in detergents than oils for gasoline engines because diesel makes more soot.
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Old 05-24-2012, 02:27 PM   #19
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Old 05-24-2012, 04:52 PM   #20
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Nice
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