Ive seen the same thing happen on several cars in the club including my own. The sticking lifters were freed on all the cars using Marvel Mystery Oil. MMO dissolves the varnish and frees the lifters. Substitute ½ to 1 quart of MMO in an oil change and run it for ~1k miles changing the filter somewhere between 200 and 500 miles. With Bills experience with Pennzoil Id change it on the lower side. The problem has gone away on every car Ive done this to within 2 oil changes unless the lifters are worn out.
Hope this helps, Mark _____ From: [email protected] [mailto:[email protected]] On Behalf Of Bruce Andrews Sent: Saturday, August 01, 2009 8:21 AM To: [email protected] Subject: 94 Miata ticking noise Hi, My 94 has a (lifter like ticking noise) on cold start. This noise stops when the engine starts to warm. I got the car 2 months ago; it has 116K on the odometer. It runes very good except for this noise. There is no oil usage, the oil pressure is good. I am running Valveoline 10-30 High mileage synthetic, it had 10-50 Pennzoil in it and the pressure went to 56psi. high side, from 30000rpm on. After changing oil it idles at 30psi. And 60psi. At 3000. Can anyone help me with the noise? Bruce Andrews
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