No fuel to the Carburetor. I just installed a new mechanical fuel pump I'm new to this and I have an 86 Camaro berlinetta with a 305 5.0l v8 it has a carburetor and no fuel is coming out of the mechanical fuel pump into the carb. My tank is filled half way and I just installed a new mechanical fuel pump. What could be the problem? |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump You got the lines reversed, or it needs to be primed. Or the fuel pump pushrod fell out when you weren't looking. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump Did you leave the bolt in that holds the pushrod while you change the pump? |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by NoEmissions84TA
(Post 6307126)
You got the lines reversed, or it needs to be primed. Or the fuel pump pushrod fell out when you weren't looking. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by //<86TA>\\
(Post 6307172)
Did you leave the bolt in that holds the pushrod while you change the pump? |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by Al_Camaro
(Post 6307122)
I'm new to this and I have an 86 Camaro berlinetta with a 305 5.0l v8 it has a carburetor and no fuel is coming out of the mechanical fuel pump into the carb. My tank is filled half way and I just installed a new mechanical fuel pump. What could be the problem? 1)the fuel line has a hole either chafed or rusted through it at some point. 2)the fuel pickup in the tank is rusted out and fell down inside the tank. 3)incorrect installation. 4) the 'new' pump is defective; check to see if it produces vacuum at it's inlet, and pressure at it's outlet. If I were a betting man, I'd put my $$$ on #1. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by Al_Camaro
(Post 6307393)
I don't have those bolts in could that be the problem? Also, if you didn't use the bolt to hold the pushrod in place, you probably dont ha e the pushrod sitting on the pump arm, and that's why you have no fuel. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump Did your old pump work before you swaped for the new one? This a new to you car? |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump Lets pump the brakes a bit, why did you change it in the first place? was it:
|
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by tealman92
(Post 6307484)
Did your old pump work before you swaped for the new one? This a new to you car? |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by //<86TA>\\
(Post 6307483)
You need the bolts or it will drip oil. Also, if you didn't use the bolt to hold the pushrod in place, you probably dont ha e the pushrod sitting on the pump arm, and that's why you have no fuel. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by zed-028
(Post 6307520)
Lets pump the brakes a bit, why did you change it in the first place? was it:
|
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump Cranks but doesn't start, no fuel at the carb even after a pump replacement. guess you're either looking at a filter obstruction (total obstructions arent that common), a line obstruction (rarer), or a possible dead tank pump (seems to pop up more frequently than youd think) Odd theory, but get someone to put an ear near the filler cap whilst you grab the feed hose of the mechanical pump (attached to the larger line) and blow some air through it with your mouth, youll quickly feel if its blocked, but hopefully the helper can hear bubbles at the other end. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump You need to inspect the fuel lines (esp. the supply line) all the way back to the tank. If you are really lucky, the fuel filter is plugged. It's underneath, by the drivers side back seat. Before you remove the new pump, connect a line to the inlet and run it to a separate gas can. Crank the car and see if the carb gets fuel. It might even start. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump Also dont forget that the cam lobe for the pump might also be ground down from use and not push the push rod enough for the pump to work. Make sure you add that to the check list if all other areas reveal nothing. Had it happen on my k10 4x4. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump I have never been able to get a mechanical fuel pump to pump fuel out of the fuel line with the starter. Prime the carb. I like to fill the bowl by the vent tube. You can also pour a small amount of fuel directly into the carb while someone is turning it over. Be careful and not spill fuel. Have fire suppression at hand in case of back fire. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump no filter under the car for a V8 carb'd car you can check your fuel lines, tank and pickup by pressurizing the tank with an air line through the return hose, fuel should flow out of the supply hose (with gas cap tight). you should also hear the pop-off of the over pressure valve in back as you pressurize it, another check. you can also place the fuel pump pickup into a container with fuel with the supply line from the pump into another. should be able to observe pumping while cranking. |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by dlinger
(Post 6307629)
I have never been able to get a mechanical fuel pump to pump fuel out of the fuel line with the starter.. Always quicker with a bit of starter spray or 1oz of fuel down its throat though :P |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump Have You Inspected The Fuel Filter Check Valve, The Rubber Can Get Distorted And Stop The Little Plastic Plunger From Opening And Stop The Fuel Flow To The Carb,It Happened To Me.. https://cimg8.ibsrv.net/gimg/www.thi...4c9f681e7e.jpg |
Re: No fuel to the Carburetor. I just installed a new mechanical fuel pump
Originally Posted by gt4373
(Post 6307812)
Have You Inspected The Fuel Filter Check Valve, The Rubber Can Get Distorted And Stop The Little Plastic Plunger From Opening And Stop The Fuel Flow To The Carb,It Happened To Me.. https://cimg8.ibsrv.net/gimg/www.thi...4c9f681e7e.jpg |
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