[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos All plugs equally wet? Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Wed, 17 Jan 2007 08:35:00 In Reply to: Re: No start. CPS? With fuel flow?, JimB, Wed, 17 Jan 2007 08:10:47 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

If one injector were stuck open, you'd get too much fuel in one cylinder. I'd expect it would still start, just with a very lumpy idle.

There isn't a lot of screwing up the FPR can do when it comes to starting, short of really keeping the pressure low. A blown diaphram would cause flooding, but you've ruled that out.

Does your engine have a cold start valve? I've never seen one on a 9000, but the manual does list it. You'd see an additional fuel line/injector mounted on the intake plenum. If that were installed and stuck open, you could be flooding.

I would suspect either way too high or low fuel pressure. I'd see if I could stick a fuel pressure gauge on the system. The manual also talks about doing a spray test, where you actually pull an injector and see the spray. That's a nasty test - not only do you need to pull and injector and hose (not easy), you spray gasoline around if it works. I'd stick with a pressure guage.

As a simple test, pull the intake hose off the AMM, and see if it'll start. This rules out air filter issues. If that provides no joy,
hold your hand over the intake of the AMM as your able assistant cranks the engine. You should feel pulses of vacuum as the engine cranks over. If you don't, that's an indication that air isn't being pulled in. Why would that be? Clogged hoses. Worst case situations? Clogged exhaust, or the chain jumped and the valves aren't opening at the right time.

posted by 192.249....

• No start. CPS? With fuel flow?, JimB, Tue, 16 Jan 2007 12:22:30
  • Re: No start. CPS? With fuel flow?, Ari , Wed, 17 Jan 2007 07:36:52
    • Re: No start. CPS? With fuel flow?, JimB, Wed, 17 Jan 2007 08:10:47
      • All plugs equally wet?, Ari , Wed, 17 Jan 2007 08:35:00 <-- Viewing This Message
        • Re: All plugs equally wet?, JimB, Wed, 17 Jan 2007 09:28:33
          • Re: All plugs equally wet?, Ari , Wed, 17 Jan 2007 14:12:14
            • Re: Fuel pressure, JimB, Wed, 17 Jan 2007 14:23:42
              • Re: Fuel pressure, Ari , Thu, 18 Jan 2007 05:40:47
    • IAC, Ari , Wed, 17 Jan 2007 07:39:34
  • Re: IAC, JimB, Wed, 17 Jan 2007 06:53:15
  • Bounce test IS NOT A VALID CPS DIAGNOSTIC!!!, David Ingram, Tue, 16 Jan 2007 12:59:38
    • Re: Bounce test IS NOT A VALID CPS DIAGNOSTIC!!!, JimB, Tue, 16 Jan 2007 13:10:54
      • Re: Bounce test IS NOT A VALID CPS DIAGNOSTIC!!!, Thomas Attwood, Tue, 16 Jan 2007 18:02:31

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• Prev by Date: All have them, though technically they're not "valves", David Ingram, Wed, 17 Jan 2007 08:29:14
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