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Truck has trouble starting when left for 8 hrs or more?
It is a '78 Jeep J10 pickup truck. Every morning I have to spray starting fluid into the carburetor usually about 3 or 4 times to get it to start. More for colder mornings. Even at school I have to do it 1 or 2 times. What is wrong with it? Also if I press the gas too hard the engine dies.
The engine dies when it goes from idle and it gets to about 15 mph too fast
1 Answer
- Anonymous1 decade agoFavorite Answer
There's a couple things that could be going on. The timing of it occurring after long periods being off suggests that your choke isn't working right.
Or:
Mixture setting: If your carb's not giving the right air/fuel mixture, it'll run either "lean" or "rich"
Back flow check valve: This keeps fuel from draining backwards through the fuel system.
When EXACTLY does it die from pressing the throttle? When warm/cold? Driving? or starting only?
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Telltales for the choke: When you get it started, let it idle and you should see the butterfly valve slowly close.(if it's not already) After the engine's warmed up, it should be almost vertical (ie: open) If the butterfly valve stays OPEN, try closing it by hand while a helper tries to start the engine. If this solves the hard start, is a good sign your only problem's the choke.
Mixture or supply... Eh, carbs can be intricate. and a bunch of different stuff can go wrong here. Feel free to drop me an email if none of our answers do the trick. There's a couple other diagnostic checks ya can do, but is REALLY involved with details.