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Showing results for tags 'vented gas cap'.
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I have a 1983 280zx Turbo. Is the fuel cap vented or non-vented? With the cap screwed down tight if I put it to the floor from a rolling stop, it runs great until it gets up to about 3000 rpms than it bogs/bucks. If I ease off the pedal when it starts doing this, it will take the fuel and run right up to speed. When it starts taking the fuel, I can put it to the floor and it will run right up with no hesitation and power as designed. If I remove the fuel cap, it will run right up to speed without any hesitation at all rpms. BUT it doesn't seem to get up to speed as fast and doesn't seem to have the power when the cap is on and screwed down tight. Any and all suggestions greatly appreciated~~~~RoscoP
