Fuel issue

SseelySseely
in General Discussion

Hey Gang-


We are stumped on this one. Arrow IV Turbo, FB engine. We couldn't get the idle right so when A&P adjusted the idle mixture he noticed the screw was bottomed out. We sent the fuel mixture assembly out for rebuild. When it came back we did a fuel set up & runs great. When we tried to shut down with mixture off we were getting pretty good run on. If you pushed throttle up to would eventually shut off. Spoke to the fuel folks & said it was probably the fuel manifold. We sent that off for rebuild and when it came back same problem. Next we sent the fuel pump off, put that back on, ran the fuel setup and still runs on....We took the vent line off the fuel manifold to see if it was plugged up but still no change..Kinda stumped. engine runs GREAT! any ideas???

Comments

  • djspathisdjspathis
    edited April 2023

    Has your fuel flow been setup recently?

    The Continental M-0 manual has the procedure for setting up the fuel system. Needs some equipment / gauges that not all A&Ps own. If you have a JPI or other accurate digital TACH and Fuel Flow instrument, the setup can be done without some of the special equipment.

    DJ

  • planewrenchplanewrench

    Disconnect the fuel line at the distrubuter and run pump with everything in cut off. If you have fuel, you still have something amis in the fuel cut off circuit.

    Also,,,IF you have electric prime solenoid, cap that line and try again.

    carl

    48 yrs A/P IA DAL aircraft inspector. 172N

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