Hey guys. New poster, but long time thread searcher/reader. Normally a quick search gets me an answer, but I've done a lot of searching and haven't found this specific problem.
I just purchased a '69 FJ40. First owner put in a 2F with 4 speed and PO did a Howell EFI 2 years ago.
Issue I am having is after driving for a short time fuel is pouring out of the fill tube between the cap. Fuel tank is under the seat in stock location but does not appear to be a stock tank. It's similar but all the EVAP lines are missing. Only a fill tube, fuel suction, fuel return, and sending unit. There is a aux tank in the back with switching valves for suction and return. PO stated it's rusty so he stopped using a while ago. I noticed that PO also recently purchased (looked new anyways) unvented fuel cap for primary tank. Since EVAP system has been removed I figured it needed a vented cap and that was the issue. Did a custom venting job on the cap in place to test my theory and it worked......for a time. It seemed like it was fixed with no issues after a couple low speed trips around the hood, but got out for a more extended drive (~10 mintues) and higher speeds (45mph plus) and problem has returned. I also notice that when the problem happens and I remove the fuel cap there is fuel up in the throat/neck of the filler tube.
Any ideas??
I just purchased a '69 FJ40. First owner put in a 2F with 4 speed and PO did a Howell EFI 2 years ago.
Issue I am having is after driving for a short time fuel is pouring out of the fill tube between the cap. Fuel tank is under the seat in stock location but does not appear to be a stock tank. It's similar but all the EVAP lines are missing. Only a fill tube, fuel suction, fuel return, and sending unit. There is a aux tank in the back with switching valves for suction and return. PO stated it's rusty so he stopped using a while ago. I noticed that PO also recently purchased (looked new anyways) unvented fuel cap for primary tank. Since EVAP system has been removed I figured it needed a vented cap and that was the issue. Did a custom venting job on the cap in place to test my theory and it worked......for a time. It seemed like it was fixed with no issues after a couple low speed trips around the hood, but got out for a more extended drive (~10 mintues) and higher speeds (45mph plus) and problem has returned. I also notice that when the problem happens and I remove the fuel cap there is fuel up in the throat/neck of the filler tube.
Any ideas??