My JD L110 keeps vapor locking. I replaced the plug, battery, air and fuel filters. Could this be electrical?

vapor locking and your replacing electrical components ---check vent is not clogged on gas cap

Read entire posting before doing anything else first.
I discovered what the problem was, after changing spark plugs, fuel filter and air filter (At this point the mower would not start at all):
1. Checking for spark. I got spark out of both plug wires. The modules were OK.
2. Checking for fuel flow. Only small amount of fuel coming out of fuel pump. I changed the fuel pump. (I bought a Briggs and Stratton for $22.50 instead of a Kohler for $60.00. Same fuel filter!)
It ran fine for 10 min. then quit again!
I loosened the gas cap and it has ran fine since then, by keeping the gas cap loose. I will replace the gas cap.
Note: It was difficult to find the problem, since I replaced the filter and removed the vapor lock, so it ran for awhile. I then checked the fuel pump and removed the vapor lock, so it ran for awhile. I would suggest that people with similar problems, loosen the gas cap to see if that works first!

crank/cam sensor

Hi
When your leaf blower quits after it gets hot, you either have a problem with gas flow being restricted into the engine or with the spark. This is a common occurrence on older-model leafblowers. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring.
Possible Vapor Lock:
Vapor lock happens when excessive heat and vapors build up in the gas tank and aren't vented properly. Check for this problem the next time your saw dies when it's hot. Unscrew the gas cap, vent the gasses and try to restart your blower. If it starts you have vapor lock, and will need to carefully inspect the fuel tank's vent hole to see if it is plugged or damaged. Clean this hole with a brush and rag.

Possible Ignition Problems:
A common problem is an old or dirty spark plug. When the plug gets covered in black carbon the spark will have difficulty firing, especially when hot. You may also have a problem in the ignition module or the coil in the module. Again, run the blower until it quits and then squirt a little starter fluid into the open choke valve, underneath the air filter. If it starts up you likely have a fuel system problem, but if it doesn't start, your ignition module or coil is likely almost finished.
Fuel Supply:
At certain times when the engine gets hot, the flow of fuel to the carburetor can get restricted. This can occur with a dirty fuel filter on the end of your main hose. The hose itself, when hot, can also lose its proper seal to the carburetor, restricting the flow. Replace your fuel filter and hoses on a regular basis, usually once a season. Try adjusting your carburetor's screws to see if you can richen the fuel mixture in the carburetor.
Other Problems:
A dirty or worn-out carburetor can also cause similar problems when hot. You should get your carburetor cleaned and serviced. Try installing a carb kit to older carburetors to help with the flow of fuel. A fuel pump inside the carburetor can also start failing and any warping in the diaphragms will also cause similar problems. You can check for a dirty carburetor by squirting a shot of carb cleaner into the open choke hole just after starting the engine. If you see a lot of thick, dark smoke pouring out the muffler, your carburetor is dirty.
Please take time to rate me
Bud

Fuel pump could be getting weak, however I recommend to check the vent on the fuel cap. I have seen this many times with the JD machines. The tiny hole in the middle of the fuel cap gets clogged with debris and won't vent, causing the engine to vapor lock. Next time you have this condition, with the engine off, remove the cap for a few seconds and try to restart.
Good luck!

You might have what is called vapor lock. The fuel gets so hot that it boils in the fuel pump or the lines. Do this test spay water on the fuel pump to cool it off . ( this only works for a few minutes before it gets to hot and vapor locks again ) If you can Keep the engine heat Off the lines and the Fuel pump it might help. If you have metal fuel lines near a heat source rap them with something such as rubber fuel line sliced down the middle to keep the heat off them If you are using an aftermarket electric fuel pump relocate it down low near the gas tank ( they work better pushing than pulling ) away from any heat source such as exhaust If your using the stock fuel pump try replacing it with a new one it might be getting weak Replace the fuel filter while your at it.

Actually vapor lock refers to a condition in the intake manifold on a carbureted engine. You don't have vapor lock. What you may have is a filter inside the tank, its nicknamed a sock. Its a fine mesh screen and may be plugging up. When you pull the fuel line the fuel flows back and unblocks a small section , until it starts too **** again and re plugs. You may also have fuel pump that starts to lose power when its gets hot. Lee

It sounds like you are getting a vapor lock.
Try getting the fuel line and fuel fillter away from the motors heat.This will cause the fuel to boil and give you trouble. Check all your electrical connections for that clicking problem. Make sure everything is clean and tight. Check your spark plug gap.

John

Sounds like fuel starvation...Check 4 kinks in fuel lineand/or dirt in petcock...replace any fuel filter u might find...did u gap ur plugs properly? run premium fuel and a 1/2 bottle of Sea Foam or Techroline thru the next 2 tanks of gas....Good luck to you friend....Tim

Its possible thats its not vapor locking!
check the electrical plug the plugs on the fuel
pump and look for a melted connection or correded pin
causing a bad connection if not check that all your heat sheilds are
still in place
Hope this helps