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Is the fuel actually leaking to the ground or do you just smell fuel? If it's actually leaking, then you need to determine what is in area where the leak occurs and carefully inspect everything above that area. If you're not quite sure where under the vehicle the leak is coming from, place a piece of paper or cardboard under the parked truck and wait for the drip, then look up from that same area while wearing safety glasses at a minimum. If you just smell fuel but don't actually see a leak, then try to determine if the smell is stronger from the front or rear of the vehicle. If stronger in the rear, it could be a rust hole in the fuel filler tube, a hole in the fuel tank, a rusty fuel line, etc.
There are also combustible gas leak detectors which could help you pinpoint the source of the leak if you are patient enough and the leak is not too large. You'd want to use that with the vehicle parked outside though so there is plenty of air circulating around and underneath the truck.
this refers to the Emission Control System leak detected ,fuel tank system so if you can get under vehicle safely have a look to see if there is a fuel leak but i would expect it would be more likely on the breather side of the system so a repair shop would be the best option
There is only one gas line. It will come from the gas tank to the engine compartment, connect to a filter. Another fuel line will leave the filter and go into the engine.
It is extremely dangerous to work with spilling gas. Do not try to start the vehicle as the electronics and spilling gas could easily start a fire and explosion. You need to trace the gas line and determine where it is leaking to fix it.
Check the evap system /canister behind the drivers rear tire,the brackets rust out and pull lines off.also check front purge valve on top of the gas tank,reach up on top of tank by end of back door and see if its wet.Im assuming you checked for leaky steel lines.also check the fuel pressure regulator on the engine.My 2 95 blazers have had these problems over the years
check and see if there is still a leak when you are not putting gas in it if it is still leaking, lower the tank and check all the hose connection for leaks. replace hose and clamps turn key to run but not start with tank lowered look for leaks
Epoxy or other types of "quick fixes" will not work, or if they do won't fix the problem correctly. Even stop leak just plugs the hole from the inside, and plugs up the system. Best bet is to try and find the problem, which is usually a leaking hose, water pump, or radiator. Once you find where the leak is coming from I can advise better on the best solution.
I would trace fuel lines from tank to fuel rail on motor. These are high pressure lines so do not try to quick-fix them. You will have to measure the lines and replace them if they are leaking. Unless the fuel is leaking from lines by fuel rail or by fuel filter.