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Restoration / Re: pictures of my camaro ss 350 1969
« on: May 04, 2011, 05:07:13 PM »
Thank you guys , the pink cuda is a lady's car , you know ladys ...... i preffer mirror under the car than stuffed panter,
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I'm a Holley guy and not very familiar with Q-Jets, but I bounced this thread off a friend of mine, Clem Zahrobsky, who has been rebuilding and modifying Q-Jets for 40+ years, and here's his comment:I have a problem wiht hard starting , where can i found a check valve internal fuel filter ?
"The return line is there to reduce the fuel pressure in the carb to zero when you shut off the engine, for emissions reasons. If there's a return line, you should use the check-valve type internal fuel filter to prevent the float bowl from draining down. In a Q-Jet, as the fuel level lowers due to fuel evaporation, it opens the needle and seat and high-performance Q-Jets use a "windowed" needle seat which is open below the fuel level, so with zero pressure in the fuel line the float bowl will drain down, causing hard starting. If you have a return line, never block it off, as it's a calibrated leak so the fuel pump has extra pressure to compensate for the leak; plugging the return line will raise the fuel pressure enough to cause carb flooding at idle."
Hope that's helpful.