Hey folks,
Long time reader, first time poster.
I have a 1987 FJ60 with a replaced fuel tank ('91), that was recently dropped and resealed ('19). I have read numerous threads on the issue, but can't seem to properly diagnose and solve my fuel leak problem.
Context: replaced after-market charcoal cannister 6 months ago, and recently had the Carb rebuilt and tuned by Iron Pig in Fredericksburg. Was still having issues with a rough idle, even with a twice rebuilt carb and fuel lines replaced, so swapped the in/out lines on the top of the charcoal cannister. Car is idling a bit higher now, but smooth as ever.
Problem: Even before the carb rebuild and the cannister fix and since, there was a strong smell of fuel inside the vehicle. Last week, I identified a fuel "leak" in the rear quarter panel where the vapor separator joins the tank at the interior wall. The leak is definitely occurring on the gas tank side of the vapor/ fuel connection (see the attached diagram. The connection in question is #46). That connector piece, #46, is new and non-rusted. After identifying the leak, I replaced all the hoses inside the panel that connect to the vapor separator.
Today, I noticed when I drove the truck from the cool garage to a shop and then to a restaurant- there was no fuel leakage and no fuel spillover on these lines or at the fuel connector part. However, after the truck sat in the sun, there was a steady stream of fuel leaking on the gas tank side of the fuel connector. i.e. leaking from the connection running from the gas tank to the fuel connector, NOT from the fuel separator back out and up towards the front of the vehicle. However, since that connector piece (#46) is bolted from the inside out, the leaking fuel was running, primarily down the inside wall and collecting inside the rear quarter panel- causing a massive stench in the vehicle.
Since there was no issue driving the car cold, this leads me to believe that I do NOT have a fuel spillover or fuel neck issue, although I have purchased an OEM cap. This leads me to believe what I have is a vapor problem--- the lines gathering the vapor off the tank cannot send the vapor into the vapor separator and thereby up to the front of the car. I know the vapor separator is supposed to run to the charcoal canister... have a gummed that up with the switch? Or maybe it was a bad charcoal cannister, I installed? Or maybe I have the lines to/from crossed?
I have no issue of the tell-tale "woosh" that comes from a vapor lock... so perhaps it is just some blocked lines into the fuel connector?
Any thoughts/ troubleshooting would be much appreciated?
Long time reader, first time poster.
I have a 1987 FJ60 with a replaced fuel tank ('91), that was recently dropped and resealed ('19). I have read numerous threads on the issue, but can't seem to properly diagnose and solve my fuel leak problem.
Context: replaced after-market charcoal cannister 6 months ago, and recently had the Carb rebuilt and tuned by Iron Pig in Fredericksburg. Was still having issues with a rough idle, even with a twice rebuilt carb and fuel lines replaced, so swapped the in/out lines on the top of the charcoal cannister. Car is idling a bit higher now, but smooth as ever.
Problem: Even before the carb rebuild and the cannister fix and since, there was a strong smell of fuel inside the vehicle. Last week, I identified a fuel "leak" in the rear quarter panel where the vapor separator joins the tank at the interior wall. The leak is definitely occurring on the gas tank side of the vapor/ fuel connection (see the attached diagram. The connection in question is #46). That connector piece, #46, is new and non-rusted. After identifying the leak, I replaced all the hoses inside the panel that connect to the vapor separator.
Today, I noticed when I drove the truck from the cool garage to a shop and then to a restaurant- there was no fuel leakage and no fuel spillover on these lines or at the fuel connector part. However, after the truck sat in the sun, there was a steady stream of fuel leaking on the gas tank side of the fuel connector. i.e. leaking from the connection running from the gas tank to the fuel connector, NOT from the fuel separator back out and up towards the front of the vehicle. However, since that connector piece (#46) is bolted from the inside out, the leaking fuel was running, primarily down the inside wall and collecting inside the rear quarter panel- causing a massive stench in the vehicle.
Since there was no issue driving the car cold, this leads me to believe that I do NOT have a fuel spillover or fuel neck issue, although I have purchased an OEM cap. This leads me to believe what I have is a vapor problem--- the lines gathering the vapor off the tank cannot send the vapor into the vapor separator and thereby up to the front of the car. I know the vapor separator is supposed to run to the charcoal canister... have a gummed that up with the switch? Or maybe it was a bad charcoal cannister, I installed? Or maybe I have the lines to/from crossed?
I have no issue of the tell-tale "woosh" that comes from a vapor lock... so perhaps it is just some blocked lines into the fuel connector?
Any thoughts/ troubleshooting would be much appreciated?
