Question about Chevrolet Camaro

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My 89 camaro rs with a 305 has been sitting for a year i put clean gas and a new battery but it wont stay running i sprayed carb clean in the tb and it runs but wont stay running any help

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  • pete vizcarrondo Apr 08, 2011

    if i stop spraying tb it stalls

  • pete vizcarrondo Apr 08, 2011

    hey are you still out there

  • pete vizcarrondo Apr 08, 2011

    my 89 camaro rs with a 305 has been sitting for a year i put clean gas and a new battery but it wont stay running i sprayed carb clean in the tb and it runs but wont stay running any help

    i stop spraying tb it stalls

  • pete vizcarrondo Apr 08, 2011

    what should the fuel pressure be/? and do i take the t-body of to soak injectors

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The carburetor cleaner in the throttle body effectively bypasses the entire fuel system. The fact that the engine runs on it until it is used up indicates that the fuel system is the problem.

Check your fuel pressure. If the fuel pump or fuel filter is gummed up, this would easily account for your problem. Hopefully, it's nothing worse than the contaminants in the filter solidifying to clog the pores.

You may also have to soak the fuel injectors (not the coil part!) in a cleaning solvent (formulated for injectors) to loosen up any dried solids from the old fuel. Run some of the cleaner into the fuel inlet port of each injector, and place the spray nozzle end in a pan of the cleaner overnight (cover the pan with a tight lid to prevent explosive fumes from filling your garage, and open in a well-ventilated area with no ignition source nearby).

Posted on Apr 08, 2011

  • Paul Bade Apr 08, 2011

    You mentioned that if you stop spraying it stalls. It's burning carburetor cleaner instead of gasoline, so the engine quits when it runs out of carburetor cleaner fuel - that's what I meant by "bypassing the entire fuel system." The carburetor cleaner has no significant effect on the fuel injectors when applied this way; it's mixing with air in the intake manifold like gasoline in a carbureted engine instead of going through the injectors.

    The fact that it stalls immediately instead of choking out a few misses before it quits suggests that none of the injectors are delivering fuel. That's why I recommend going after the fuel filter and checking fuel system pressure first - clean out the injectors only if your tests show fuel system pressure and delivery rate are within specification. Do not try to put injector cleaner in the fuel tank if you have a dirty fuel filter - the contaminants in the filter could actually make a bigger mess in the injectors.

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How long does it run before it shuts down?

Posted on Apr 08, 2011

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