AP1 S2000 Engine ticking - Stumped!!
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Joined: Apr 2003
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From: Temple City
one of the shops was proactive enough to actually perform an oil analysis. Came back completely normal no metals were found in the oil. And no, I didn't sandblast the valve cover or do anything to it. I am getting the car back today and plan to check/adjust valve clearances myself
Joined: Dec 2014
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From: O.C.
Replace the AP1 Valves, retainers, and springs with AP2 ones. Hopefully that solves the issue. I had the same noise for years on my Eclipse and the valves were the issue.
Last edited by Spaceman2345; Mar 1, 2017 at 12:19 PM.
Thread Starter
Joined: Jan 2017
Posts: 119
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From: Louisville
The reason for me sharing wasn't because we're analyzing the causes of our ticking but the symptoms. If the oil analysis came back totally fine, then the problem lies elsewhere...
I agree in that a valve adjustment is the low hanging fruit. Do a compression/leakdown test after the adjustment and mind the condition of the spark plugs, i.e. differences between them.
I agree in that a valve adjustment is the low hanging fruit. Do a compression/leakdown test after the adjustment and mind the condition of the spark plugs, i.e. differences between them.
Thread Starter
Joined: Jan 2017
Posts: 119
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From: Louisville
i think this is a great idea and I will try to get ahold of those parts while I am in there adjusting them. The car pulls hard with absolutely no power loss and the noise hasn't worsened over a couple hundred miles that have been put on it over the past few weeks. Hoping it is just the valves.
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Joined: Jul 2002
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From: Long Island, New York
You dont need AP2 springs.
Valve replacement is not part of the valve adjustment and inspection.
There is no such thing as AP2 valves (AP1/AP2 same)
Valve replacement is not part of the valve adjustment and inspection.
There is no such thing as AP2 valves (AP1/AP2 same)
Last edited by Billman250; Mar 2, 2017 at 10:29 AM.
Joined: Dec 2014
Posts: 154
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From: O.C.
i think this is a great idea and I will try to get ahold of those parts while I am in there adjusting them. The car pulls hard with absolutely no power loss and the noise hasn't worsened over a couple hundred miles that have been put on it over the past few weeks. Hoping it is just the valves.
I'm hoping the valve adjustment solves your issue.
Last edited by Spaceman2345; Mar 2, 2017 at 10:24 AM.
Joined: Jul 2013
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I went 160,450 miles on original ap1 retainers, replaced all the valve stem seals, I bought new retainers for the intake in case any were cracked, none were, but ended up installing them when I lost a few keepers down a storm drain. Anyway, there's nothing wrong with ap1 retainers.
I say do the valve adjustment, it really does sound like some very loose valves. I have mine at .010" on the intake and .012" on exhaust, and they're not nearly as loud although you can hear them a little bit.
I say do the valve adjustment, it really does sound like some very loose valves. I have mine at .010" on the intake and .012" on exhaust, and they're not nearly as loud although you can hear them a little bit.
