[Main C900 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Chain & chain guide Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Wed, 23 Jul 2003 13:05:04 In Reply to: First look under valve cover: any other checks to do?, AdaminTO, Wed, 23 Jul 2003 12:44:22 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

Visually inspect the chain for wear - does it have shiny and worn spots? Do the cam gear teeth look good or worn? Is the chain guide (rubber bit on the underside of the valve cover, above the chain) look good, or is it dried out and shrunk? (I'll bet after 15 years it doesn't look great). Replacing that guide is a nice thing to do.

Turn the engine over to Top Dead Center (TDC) for cylinder #1. There should be alignment marks on the cams and cam bearing blocks. Do they line up? If they line up pretty good, that's a good indication that the chain isn't worn. If they're off - around as much as a half-tooth off - then the chain is worn. If it's more than a tooth off, then at least one cam had the chain jump a tooth - you'd notice some pretty lousy performance if that happened.

Inspecting the alignment of those marks is about the best way to determine how worn the chain is.

posted by 192.249....

• First look under valve cover: any other checks to do?, AdaminTO, Wed, 23 Jul 2003 12:44:22
  • Problem found: camshaft bearings: more..., AdaminTO, Wed, 23 Jul 2003 16:16:12
  • Chain & chain guide, Ari , Wed, 23 Jul 2003 13:05:04 <-- Viewing This Message
    • Ari: chain guide looks good, but hard .., AdaminTO, Wed, 23 Jul 2003 13:12:36
      • Pull fuel pump fuse & "bump" starter or >, Micah in NC, Wed, 23 Jul 2003 14:04:31
        • Re: Pull fuel pump fuse & "bump" starter or >, adamin TO, Wed, 23 Jul 2003 14:17:29
          • Re: Pull fuel pump fuse & "bump" starter or >, Ari , Thu, 24 Jul 2003 05:56:10
            • Ari> Yes, 10 degrees of sprocket rotation, ..., AdaminTO, Thu, 24 Jul 2003 09:10:10
  • Re: First look under valve cover: any other checks to do?, CT 89 SPG, Wed, 23 Jul 2003 12:54:05

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