Need some help.
My son has a 2000 camry that will randomly leak gas every couple of months. It'll pour out as he starts it but then nothing after that. He opens the hood to take a look and nothing leaking at all.
any ideas why this could be happening? Even my mechanic says if it aint leaking at that moment its hard to diagnose.
any help would be great. Thanks.
small puddle in pic is all he got.

 

V6 or 4 cylinder engine?

Ask you son if he is topping off the gas tank when fueling. As in the auto shut off fuel nozzle shuts off and he keeps putting in more fuel manually.

 

its a V6.
no he just filled it 3/4.

 

Might be a failing pressure dampener.

There is a fuel line that runs to the dampener/fuel rail from the can type fuel filter that is bolted to the chassis.

Find where the fuel line attaches to the fuel rail.

The best advice for your sons situation is to start adding a fuel dye to the gas tank. This dye is colored red, yellow, etc and will glow under UV light. When the fuel leaks out the dye remains after the fuel evaporates. Using an UV light one can trace back to where the leak started. It works well. You can buy a standard screw type bulb which is UV. DON'T look at the light bulb directly as its a hazard to ones eyes.

The dye is common and available at auto parts stores, Amazon, etc.

These dyes are safe and used all the time to find fuel, engine oil, transmission fluid, PS fluid leaks. A lot of vehicle fuel is dyed at the distributor but it doesn't stand out once the fuel evaporates and doesn't glow to UV.

 

I'll give it a try. Thanks. I'll keep you posted on how it goes. May take a few weeks as this only happens so often.