Hard to start after sitting
Let's manage by fact.
Standard operating procedure for starting my 67 273 2bbl.
If it has beed started in the last couple days.
The stock V8 fuel pump should be able to produce 1 quart of fuel in one minute
That is 250 pumps of the fuel pump plunger per minute or 4 per second
That is 1/2 oz in 1 second.
8 seconds would produce the 120 ml the video is putting into the bowels of a Holley.
Mt theory....
Car ran a few days ago.
Carb is mostly to full with fuel.
There is / may still be some fuel vapor in the intake.
2 pumps adds more fuel vapor to the intake.
Now it takes a few seconds to get the fuel vapor to the cylinders
And it fires
Car sat for a few weeks
Carb is probably not bone dry.
Intake has no fuel vapor in it
2 pumps adds fuel vapor to the intake.
Now it takes a few seconds to get the fuel vapor to the cylinders
But there is not enough so 2 more shots some more cranking
And it fired
Car sat for a months
Carb is probably bone dry.
Intake has no fuel vapor in it
Now would be the time to fill the bowels manually.
And put a small squirt a couple ml of fuel directly into the intake. Both sides if it's not an open plenum
You only need to do this 2-4 times a year, so why go to the trouble of adding an electric fuel pump.
The parts you don't add, don't cause you no trouble!
BTW... As for alcohol gas vs no. Alcohol gas. It WILL / can make a difference when running in hot environments but probably not be a too much of a problem with starting.
Let's manage by fact.
- Define "cranks and cranks"
- BEFORE you try to start next time that you expect to have a problem, take off the air filter and rotate the throttle while looking down the carb. Is there fuel squirting out of the accelerator pump jets.
- To see how fast the "tired old mechanical fuel pump" can fill the carbs. Sometime take the fuel line off the output of the fuel filter and extend it to a bucket. Get a remote starter switch and put it between batt positive terminal and the lug the Yellow wire was on on the starter relay and crank the engine. Have some one with a stop watch measure a few seconds, 5 would be a good number. Now measure the amount of fuel in the bucket.
Standard operating procedure for starting my 67 273 2bbl.
If it has beed started in the last couple days.
- 2 pumps and crank for a few seconds.
- It will usually start right up
- If it does not start repete step 1
- It will start.
- 2 pumps and crank for a few seconds.
- 2 pumps and crank for a few seconds with throttle 1/2 way open
- It will usually start right up
- If it does not start repete steps 1 & 2 be careful how many pumps you give it as you can flood the engine.
The stock V8 fuel pump should be able to produce 1 quart of fuel in one minute
That is 250 pumps of the fuel pump plunger per minute or 4 per second
That is 1/2 oz in 1 second.
8 seconds would produce the 120 ml the video is putting into the bowels of a Holley.
Mt theory....
Car ran a few days ago.
Carb is mostly to full with fuel.
There is / may still be some fuel vapor in the intake.
2 pumps adds more fuel vapor to the intake.
Now it takes a few seconds to get the fuel vapor to the cylinders
And it fires
Car sat for a few weeks
Carb is probably not bone dry.
Intake has no fuel vapor in it
2 pumps adds fuel vapor to the intake.
Now it takes a few seconds to get the fuel vapor to the cylinders
But there is not enough so 2 more shots some more cranking
And it fired
Car sat for a months
Carb is probably bone dry.
Intake has no fuel vapor in it
Now would be the time to fill the bowels manually.
And put a small squirt a couple ml of fuel directly into the intake. Both sides if it's not an open plenum
You only need to do this 2-4 times a year, so why go to the trouble of adding an electric fuel pump.
The parts you don't add, don't cause you no trouble!
BTW... As for alcohol gas vs no. Alcohol gas. It WILL / can make a difference when running in hot environments but probably not be a too much of a problem with starting.