Q jet power piston spring
Need a little help with the best spring . I have s spring set with 5 spring different colors and length.
80 g body w / 305 . My problem is the motor wont idle. It acts like it go's rich and dies. I have vary low vacuum so I'm thinking the power valve is opening at idle and dumping fuel. My question is should, I use a tall spring or a short spring or just test till one that works thanks, John |
Re: Q jet power piston spring
It is a street car or racecar?
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Re: Q jet power piston spring
stocker. w/ stocker cam short lift long duration.
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Re: Q jet power piston spring
Could possibly be a vacuum leak ?? Has the intake been removed lately ?
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Re: Q jet power piston spring
Spring shouldn’t affect idle. Power piston is tied to main circuit not idle circuit if pulling fuel from main circuit at idle throttle blades are to far open.
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Re: Q jet power piston spring
Checked for vac leak w/ smoke machine.
As for the pistons. I thinking maybe a little pull over . Well I'll put it back together as it's a backup and work on it next spring. thanks all who chimed in. John B645 |
Re: Q jet power piston spring
PM sent
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Re: Q jet power piston spring
Put flat edge on top base sitting upside down. Must be good and flat.
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Re: Q jet power piston spring
Get a drinking straw, cut it down to about 4? long. Place it in the vent stack
at abslight angle to catch the power piston/primary metering rod hanger arms. Note the length sticking up. Now start the engine. It should pull the power piston down and the straw with it. If it goes down and stays down At ?idle? (yes I understand it won?t idle well on its own but you get the idea) then that?s not your problem. Have you drilled the holes in the primary blades yet? Kp |
Re: Q jet power piston spring
Get rid of PP & rods & block the vac. supply, reduce jet size.
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