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79 280zx n/a runs rich with no power after 1/4 throttle

2.3K views 26 replies 6 participants last post by  RightHandriver  
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Here's a stock 79' engine.

Your engine has a vacuum hose going that valve on the throttle-body that should have nothing connected to it.

Have you checked the distributor vacuum-advance to see if it's leaking? Due to the age of these engines the inside-diaphragm cracks and leaks. A hand-held vacuum-pump will be needed to find out if it's bad.

If no A/C or heater disconnect the hose going to the vacuum-tank and plug it.

Also if you have not steering, how do you turn the car?