Thanks for the info. I've ordered the tank selector valve from fordpartsguy.com which is half the price of other places. Thanks for giving me the part number, which made it easy.
Out of curiosity, I've seen mentioned on this thread about the front or rear tank spilling over when the valve or the tank pump isn't working. Does this actually mean "spilling", as in "gas leaking out all over the place."
Quote:
Originally Posted by subford
You have a high pressure check valve in the high pressure pump on the frame. If you are going to work on anything from the HP pump to the fuel pressure regulator (HP pump, fuel filter. FPR or injectors) then yes you have to release the fuel pressure.
But if it has been setting over night you will not have any pressure in that system either.
You do not have a fuse for the fuel system anyway so you will not be able to take a fuse out. On yours you would remove the fuel pump relay or unplug the Inertia switch before running it to get ride of the pressure.
Yes it does, it comes out of the Gas Cap area on the other tank than you are running on.
If the tank overfills on your type system it would be the return fuel from the FPR going to the wrong tank. This can happens if the "O" ring on the return valve sticks. This will happen to the from tank over filling on your system while running on the rear tank. The only thing you can do is replace the valve that you are now replacing.
You may have read about a check valve causing this but this check valve only happens to 1990 and newer F-series trucks & 1991 and newer E-series vans.
Just a followup. fordpartsguy.com was unable to get the part (backordered for several months), so I turned the problem over to my mechanic. He was able to fix the leak by replacing a filter and O-ring inside of the tank selector unit. I guess he had done that sort of thing before.
Quote:
Originally Posted by 80skeys
Thanks for the info. I've ordered the tank selector valve from fordpartsguy.com which is half the price of other places. Thanks for giving me the part number, which made it easy.
You have a high pressure check valve in the high pressure pump on the frame. If you are going to work on anything from the HP pump to the fuel pressure regulator (HP pump, fuel filter. FPR or injectors) then yes you have to release the fuel pressure.
But if it has been setting over night you will not have any pressure in that system either.
You do not have a fuse for the fuel system anyway so you will not be able to take a fuse out. On yours you would remove the fuel pump relay or unplug the Inertia switch before running it to get ride of the pressure.
I have an 86 F-250 6.9. Had the front tank out and when it was reinstalled the vent hose in the filler pipe ended up in the wrong position. Don't know if it is too deep or too shallow. I now get spillage when refueling the front tank.
Any ideas ?
I have an 86 F-250 6.9. Had the front tank out and when it was reinstalled the vent hose in the filler pipe ended up in the wrong position. Don't know if it is too deep or too shallow. I now get spillage when refueling the front tank.
Any ideas ?
Sounds like the vent hose came off the part that bolts on to the fender.
Wow! What a great source for information.
But I have gone through all of the posts here and can't find one that tells me where the tank selector valve is located on my '97.
I cannot run on the front tank, but the gauge is OK. Initially a NAPA parts guy told me that there are pumps in each tank, however I researched more and found that the 97 does not use tank pumps with the direct injection system.
I can see that there is a tank selector valve in the wiring diagram I found on Chilton, but no information about location of the valve. It seems to me that this coould be the source of my problem and I want to check or replace it.
Can anyone point me in the right direction for this 97?
260K and running strong, but I do need both tanks for the highway.
A couple questions. 1988 Ford F150 4wd with 302 motor.
1. Does the rear tank receive gas from the front tank or some other part of the system on a regular basis? I've been using only the front tank for several weeks, I had thought the rear tank was empty, but it recently came to my attention it's not.
2. Last night I noticed a leak from the rear tank in an area where the previous owner had patched it. Rather than fixing the leak or replacing the tank, is there a way to configure the truck to never use the rear tank and make sure it's always dry? I don't use it anyway, so maybe this is a viable option instead of spending money to replace parts.
1. Does the rear tank receive gas from the front tank or some other part of the system on a regular basis?
No you have a problem with the selector valve.
Quote:
Originally Posted by 80skeys
2. is there a way to configure the truck to never use the rear tank and make sure it's always dry?
Just got to a salvage yard and get a single tank reservoir from a Bronco, Bronco II or a F-series with one tank. They need to be in the year range from 1986-1989.
Note the 1986 ones will have filter in them so you may not want to get one of them.
Put the reservoir in place of the selector valve and only hook up the two fuel hoses from the front tank and the ones going to the engine. Now leave the switch on the dash always on the front tank.
No you have a problem with the selector valve.
Just got to a salvage yard and get a single tank reservoir from a Bronco, Bronco II or a F-series with one tank. They need to be in the year range from 1986-1989.
Note the 1986 ones will have filter in them so you may not want to get one of them.
Put the reservoir in place of the selector valve and only hook up the two fuel hoses from the front tank and the ones going to the engine. Now leave the switch on the dash always on the front tank.
Just got to a salvage yard and get a single tank reservoir from a Bronco, Bronco II or a F-series with one tank. They need to be in the year range from 1986-1989.
I called a few junkyards and nobody knows what a "single tank reservoir" is. Does it go by another name? Ford part number? Some other way to identify it?
The Ford Shop manual calls it a "Reservoir Assembly 9K004".
The one I have in my hand has a number on it and it is E6TA-9K044-BA.
I would not think they would sell very many at all so all of the single tank Fords they have more than likely still has one on it. They never go bad as they have no moving parts and just act as a reservoir for the high pressure fuel pump.
As I said the ones for the 86 also held the only fuel filter for the fuel system.
If you need it I can take a photo of this one I have and post it. The one I have is off of a BII.
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