Question about 1986 Chevrolet Nova

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Hi It is almost impossible to get my 86 1.6L Nova to start after being shut off for several hours (overnight) I put a new fuel pump & filter on which didn't help then put an electric pump on. Still no change. There is no fuel in the carb when I pump the throttle but plenty returning to the tank. If I give it a little drink into the carb it fires right up & runs smoothly. Any ideas? Thanks

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Robert Wood

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Prime diaphragm in the carb is not shooting fuel.

Posted on Jun 30, 2015

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Brian Lee

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Probably a carb issue. Possibilities are fuel bowl leak in the carb into intake manifold due to crack, and carb float needle not seating correctly,

Posted on Jun 30, 2015

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James McDonald

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Under hood fuel lines, touching coolant or heater hoses.
Fuel lines under vehicle close to or not shielded from exhaust pipe, converter, muffler. Fuel lines pinched or crushed.
Fuel filter changed recently.
Fuel pump pressure. Fuel pressure regulator & Fuel pressure sensor.


The age of your vehicle also guarantee's a vacuum leak. It may sound silly but the truth is rubber grommets, and hose's shrink and dry out over time and the harsh environment under the hood makes it worse. Check all vacuum lines and fittings attached to the intake manifold, valve covers (pcv valve), and be sure to check for a vacuum fitting on top of the intake just behind the throttle body. Does it fit tight in the hole? You can seal loose fittings with a high-temp RTV (Red) silicone sealant/adhesive. Several small leaks add up and your engine, heat/AC, and transmission will be all to glad to tell you about it.

Aside from that, if you are still having problems, Have a look at the MAP & Oxygen sensors. Finally, you may end up replacing the TBI throttle body assembly.

Posted on Aug 29, 2011

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