 Pre-diagnosis advice needed, no load valve noise |
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| cwpeden |
 May 22 2009, 07:11 PM
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#1
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Great White North, huh?  Group: Members Posts: 916 Joined: 20-August 06 From: Victoria BC Member No.: 6,693 Region Association: Canada  |
So driving to work today I notice a sudden increase in valve noise on decel.
It only seems to be coming from one side and possibly one valve. I had a top end rebuild in september, new guides, valves and seats, after dropping a seat. Not as capastophic as some pics I've seen, but it did nick one piston. Question is: What does a broken ring sound like? If they do sound. And, do seats 'unseat' a bit and make noise? I've detonated a lifter before so I dont think its that. Just sounds like one valve is suddenly out of adjustment a bit. Any help on diagnosis is appreciated. |
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| cwpeden |
May 22 2009, 08:01 PM
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#2
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Great White North, huh? Group: Members Posts: 916 Joined: 20-August 06 From: Victoria BC Member No.: 6,693 Region Association: Canada |
PS. I'll be doing a compression check tonight
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| VaccaRabite |
May 22 2009, 08:15 PM
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#3
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En Garde! Group: Admin Posts: 13,442 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
rocker screw come off? pop the rocer cover and take a look.
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| cwpeden |
May 23 2009, 11:59 AM
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#4
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Great White North, huh? Group: Members Posts: 916 Joined: 20-August 06 From: Victoria BC Member No.: 6,693 Region Association: Canada |
I did a compression check last night and was surprised with 120 pounds across the board. Exactly 120, on all 4!! (IMG:style_emoticons/default/WTF.gif)
Gotta get a new tester. That cant be right. Dont think its a screw. Would be louder. I'll open it up and shove in a blank check. That oughta fix it (IMG:style_emoticons/default/dry.gif) |
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| cwpeden |
May 23 2009, 03:25 PM
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#5
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Great White North, huh? Group: Members Posts: 916 Joined: 20-August 06 From: Victoria BC Member No.: 6,693 Region Association: Canada |
Having trouble finding what the compression should be on a stock 2 liter.
Anyone? |
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| Dave_Darling |
May 23 2009, 05:32 PM
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#6
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914 Idiot Group: Members Posts: 14,984 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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Depends on a lot of things. If it gets to 100 PSI and everything is in good shape (e.g., starter and battery) then you start to worry.
120 PSI is fine. --DD |
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