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12-21-2024, 03:16 PM
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#1 |
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Junior Member
Join Date: Dec 2005
Location: Portland ,OR
Posts: 16
Likes: 0
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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 Last edited by john billups; 12-21-2024 at 05:21 PM. |
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12-21-2024, 03:32 PM
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#2 |
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Member
Join Date: Nov 2001
Location: Marion,In.
Posts: 267
Likes: 60
Liked 110 Times in 29 Posts
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Re: Q jet power piston spring
It is a street car or racecar?
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12-21-2024, 03:39 PM
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#3 |
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Junior Member
Join Date: Dec 2005
Location: Portland ,OR
Posts: 16
Likes: 0
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Re: Q jet power piston spring
stocker. w/ stocker cam short lift long duration.
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12-21-2024, 06:15 PM
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#4 |
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VIP Member
Join Date: Feb 2014
Location: Derby City, USA
Posts: 3,634
Likes: 1,083
Liked 7,921 Times in 1,515 Posts
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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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12-21-2024, 07:02 PM
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#5 |
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Member
Join Date: Aug 2008
Posts: 137
Likes: 80
Liked 132 Times in 52 Posts
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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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12-21-2024, 09:55 PM
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#6 |
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Junior Member
Join Date: Dec 2005
Location: Portland ,OR
Posts: 16
Likes: 0
Liked 0 Times in 0 Posts
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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 |
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