Fuel system question
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Fleet Mechanic
Joined: Apr 2014
Posts: 1,790
Likes: 182
From: Oakland, AR
I seem to lose fuel in my lines. Which is causing longer crank times. And I'm not sure I want to run both, which is the reason for the question. I have everything to do it either way.
Lead Driver
Joined: Oct 2018
Posts: 7,893
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Probably a carburator issue. your carb should hold enough fuel to start the engine .
Your mechanical pump should hold the fuel in the lines as well. it may be faulty. electric pumps are a solution looking for a problem on carburated vehicles.
Your mechanical pump should hold the fuel in the lines as well. it may be faulty. electric pumps are a solution looking for a problem on carburated vehicles.
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Fleet Mechanic
Joined: Apr 2014
Posts: 1,790
Likes: 182
From: Oakland, AR
It usually does it when it sits overnite. Starting first thing in morning is the hardest, after that no real problems. On third fuel pump now. They will work real good for a few months then get start going down hill.
Lead Driver
Joined: Oct 2018
Posts: 7,893
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The new pumps aren't what they used to be but I've had good luck with the Carter's I've used .
It should take a month to dry down. if you don't have the carb spacer the heat will boil some out and that doesn't help. just one more reason to block the crossover off. but even at that your carb is not holding fuel properly.
On a Holley it's usually a leaking accelerator pump or bad gasket. on Edelbrock I've found this problem to be VERY common even on new carbs and I CANNOT figure out why it happens but it does. as if there was a need for another reason to buy Holley this is it.
It should take a month to dry down. if you don't have the carb spacer the heat will boil some out and that doesn't help. just one more reason to block the crossover off. but even at that your carb is not holding fuel properly.
On a Holley it's usually a leaking accelerator pump or bad gasket. on Edelbrock I've found this problem to be VERY common even on new carbs and I CANNOT figure out why it happens but it does. as if there was a need for another reason to buy Holley this is it.
Thread Starter
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Fleet Mechanic
Joined: Apr 2014
Posts: 1,790
Likes: 182
From: Oakland, AR
The fuel pump on it now is a carter and the carb is a holley. Haven't seen any leaking on the carb.
What started all this. The radiator was pulled to be repaired and while it was out I decided to catch up on some stuff. And this is one of those things.
What started all this. The radiator was pulled to be repaired and while it was out I decided to catch up on some stuff. And this is one of those things.
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Lead Driver
Joined: Oct 2018
Posts: 7,893
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You should see or at least smell it. but either way if the carb is holding a full float bowl it doesn't need any gas from the pump to start. this is your problem not the pump.
well, or ignition if it's not the carb.
well, or ignition if it's not the carb.
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Thread Starter
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Fleet Mechanic
Joined: Apr 2014
Posts: 1,790
Likes: 182
From: Oakland, AR
You're right on that point. Let me ask you this. This carb is set to be a direct replacement and has all the stuff for the egr. My truck, 78 F150 460, did not come with any of that. The fuel bowl vent that would go to the egr canister is not capped off. Should it be? Could that be part of my problem?
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