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    Thread: '86 Quantum synchro rough idol

    1. 08-18-2019 07:21 PM #1
      New fuel pump. New battery. Spark plugs look ok. Air filter new, duct in good shape. Car idols high then dies. Idol is inconsistent and when I give it some gas, it putters out. Any suggestions? What's the next step?

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    3. 08-18-2019 07:54 PM #2
      Its idols really smooth when above 2000 rpms

    4. Member
      Join Date
      Jul 26th, 2005
      Newark, DE
      08-25-2019 07:56 AM #3
      Carefully clean the fuel distributor plate under the boot and above air cleaner. Make sure it moves easily. Make certain you have no vacuum leaks. Next step will be to check the fuel pressures. I had an issue with my 84 Q that mostly turned out to be the hose between the fuel pump and the fuel sender was shot and leaking. I had to carefully cut the old hose at the fittings and clamp some fuel injection line in place. Still stumbles cold... I will probably have to fine tune the pressures and the CO adjustment.
      Mike Rausch

      1984 Quantum Wolfsburg wagon 2.2 5-speed
      1984 Quantum GL5 wagon 2.2 Automatic

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    6. 08-29-2019 05:38 PM #4
      Thank you. I'll check it out and get back to the thread this weekend hopefully.

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