No Fuel!

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jlopresto
Posts: 18
Joined: Sun Dec 16, 2018 12:33 pm
Your car is a: 1985 Pinninfarina Azzurra

No Fuel!

Post by jlopresto »

Hi,

I bought a 1985 Azzurra. The previous owner removed the fuel injection system and put in a carburetor. (no idea what type of carb this is, just know it is a weber) I have replaced the following:

Ignition coil and controller
Ignition cables
Spark plugs

The car will run while using starter fluid. (I loaded up the fuel bowl and it runs great.) However, without the starter fluid the starter motor just spins and the engine cranks, there is no sign of combustion at all. I have 8 gallons of fuel in the tank. One note - The fuel pump is extremely loud when I turn on the ignition. Before I order a new fuel pump and filter I was wondering if there are adjustments on the carb I could play with first.

Can anyone recommend a troubleshooting path?

Updated: I have removed the main nut on the carb where the fuel lines connect. There was some fuel that came out along with what appears to be a screen filter. I then closed it back up and turned on the ignition. I loosened that main nut and fuel started to pour out very quickly. I believe I have fuel pressure and I believe the line is clear just not sure why fuel is not making it into the carb. I am stumped.

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GeorgeT
Posts: 379
Joined: Thu Feb 16, 2012 12:41 pm
Your car is a: 1982 Fiat 124 Spider

Re: No Fuel!

Post by GeorgeT »

Check the float in the carb for free movement and that it doesn't have a hole in it and flooded. Also check the float bowl needle.
jlopresto
Posts: 18
Joined: Sun Dec 16, 2018 12:33 pm
Your car is a: 1985 Pinninfarina Azzurra

Re: No Fuel!

Post by jlopresto »

Thanks George. i pulled the top of the carb off and the float is definitely fine it is nice and light. i am a newb to carbs but i have not been able to locate the float bowl needle. I do need to replace the gasket as it is disintegrated.
jlopresto
Posts: 18
Joined: Sun Dec 16, 2018 12:33 pm
Your car is a: 1985 Pinninfarina Azzurra

Re: No Fuel!

Post by jlopresto »

Thanks George. i pulled the top of the carb off and the float is definitely fine it is nice and light. i am a newb to carbs but i have not been able to locate the float bowl needle. I do need to replace the gasket as it is disintegrated.
bobplyler
Patron 2022
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Posts: 823
Joined: Sat Jan 30, 2010 7:58 pm
Your car is a: 1979 spider 2000
Location: Charlotte, NC

Re: No Fuel!

Post by bobplyler »

I guess it's an electric pump. I would pull the fuel line at the carb, and just see if fuel is getting to the carb.
1979 Fiat Spider (since new)
2005 Lincoln LS (the wife's car)
2003 Chevrolet Cavalier (daily driver)
1999 Honda Shadow VLX 600
1972 Grumman Traveller 5895L (long gone).
jlopresto
Posts: 18
Joined: Sun Dec 16, 2018 12:33 pm
Your car is a: 1985 Pinninfarina Azzurra

Re: No Fuel!

Post by jlopresto »

Thanks Bob. Yes fuel is getting to the carb just not filling the bowl. I am going to get some carb cleaner tomorrow and see what I can clean out.
bobplyler
Patron 2022
Patron 2022
Posts: 823
Joined: Sat Jan 30, 2010 7:58 pm
Your car is a: 1979 spider 2000
Location: Charlotte, NC

Re: No Fuel!

Post by bobplyler »

If it's getting to the carb, but not into the bowl, it's probably the needle valve. Easy to replace. And check the float height. Also easy.
1979 Fiat Spider (since new)
2005 Lincoln LS (the wife's car)
2003 Chevrolet Cavalier (daily driver)
1999 Honda Shadow VLX 600
1972 Grumman Traveller 5895L (long gone).
jlopresto
Posts: 18
Joined: Sun Dec 16, 2018 12:33 pm
Your car is a: 1985 Pinninfarina Azzurra

Re: No Fuel!

Post by jlopresto »

Thanks I'll try that ! Appreciate the help!
bobplyler
Patron 2022
Patron 2022
Posts: 823
Joined: Sat Jan 30, 2010 7:58 pm
Your car is a: 1979 spider 2000
Location: Charlotte, NC

Re: No Fuel!

Post by bobplyler »

One other thing. Some carbs have a strainer at the carb inlet. It's held on be a fairly large screw, if there.
1979 Fiat Spider (since new)
2005 Lincoln LS (the wife's car)
2003 Chevrolet Cavalier (daily driver)
1999 Honda Shadow VLX 600
1972 Grumman Traveller 5895L (long gone).
jlopresto
Posts: 18
Joined: Sun Dec 16, 2018 12:33 pm
Your car is a: 1985 Pinninfarina Azzurra

Re: No Fuel! (Solved)

Post by jlopresto »

Thanks Bob. I replaced the screen filter and cleaned the jets (one was completely clogged). The engine is now running. Appreciate you sharing your expertise! Have a great week!
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