all primer bulbs are not the same size! quit telling everybody it will fit just because it fit yours… Shoppers find videos more helpful than text alone.
Should primer bulb stay full?
the primer bulb should be mostly fuel, check the lines they get old and start cracking. replace with tygon. there is a fuel pump in the carb operated by pulses from the crank case, the diaphragm in it can can go bad also.
What are primer bulbs for?
ANSWER: The primer bulb, which is located in the fuel line between the gas tank and the engine, is used to fill the carburetor with fuel when the engine is started cold. … Always hold the end nearest the engine up. This allows the internal valves to open and close properly. Also, do not squeeze the bulb excessively hard.
Should a primer bulb stay hard?
Primer bulbs aren’t meant to stay “hard” , they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard.
Should there be air bubbles in the primer bulb?
Think of the bubbles as signs of purging the fuel system. As long as the primer nipple gets firm, it seems to be working as designed.
Which fuel line goes to the primer bulb?
The (clear) main fuel line with the filter (filter inside the fuel tank) goes to the bottom of the carburetor (or the elbow shaped nipple). The (clear) fuel intake line runs from the top of the carburetor (straight nipple) and goes to the short post on the back of the primer bulb.
How do you diagnose a bad primer bulb?
- Inspect the carburetor bulb for cracks on its face. …
- Check the ring around the primer bulb to see if it is cracked in any way. …
- Inspect the primer line for the primer pump and check for any cracks or debris. …
- Inspect the connection of the primer bulb line going into the carburetor.
What happens if primer bulb is cracked?
When the primer bulb isn’t working, it may be a problem with the bulb itself, with the fuel lines that feed fuel to the bulb or both. … When they’ve hardened and cracked, they let in air, which makes it impossible to draw the fuel into the carburetor properly.