I'm changing the fuel filters in my "86 BII. I have a filter canister on the drivers side frame rail between the tank and high pressure fuel pump. Then I also have an in-line filter op on the fron of the driver's side frame rail by the front tire down stream from the high pressure fuel pump. When I removed the bowl for the canister fillter there was no filter in it also the large o-ring was to big for the grove but it had not been leaking (the snot had ben tightened out of it). The large o-ring that came with the new filter is to small to stretch out to fit in the o-ring grove. So, I'm on my way back to the auto parts store to get a new o-ring. I'm figguring that sence I allready have the in-line installed and have bought the canister filter also I'll just use both does any boudy see any potential problems with this idea?

 

> any boudy see any potential problems with this idea?

Nope, I ran a BII with both filters for a long time with no problems. I suggest lubing the O-Ring before installing so it does not tear.

> (the snot had ben tightened out of it).

That is normal. On one of mine, I had to remove it from the vehicle, put it in a vise, and open it with water pump plyers.

 

The o-ring 'looks' a little small, but if you lube it and be careful, it will stretch to fit the groove. It's just a pain in the butt to keep it in there sometimes, though. I haven't seen the in-line filter on mine, though... should probably look for it....

 

The o-ring realy was to small. The guys at the parts store pulled an oring from another box and it fit. I had to hold it in with grease to get it to stay in the grove while I reassambled the canister. I had remembered a post about this canister being a pain so I didn't even try undoing it under te truck. I just pulled it; now I'm glad that I did. Thanxs for the help and advise.

 

Is there any way to replace that filter without getting doused with fuel? It seems to siphon from the tank and just doesn't stop coming out when the canister is open.

 

Well, when I replaced mine, I disconnected the wiring to the inertia switch and bled the pressure off the system by starting it and letting it die. I had some spillage, but not a continuous flow. Plus, I was also parked on an incline with the tank below the level of the filter canister.

I'll have to see if there is actually a second hi-pressure filter on mine later and replace that one as well... maybe while I'm doing the cold air intake mod... seems I have some rough idle / high-idle misfiring going on that I need to track down.

 

i just stretched my 2nd o-ring on the canister filter on my '86 BII, i have been troubleshooting a fuel delivery problem. i dont think i have the sealed in-line filter also, but i'll check, our '90 towncar has that type. the parts store did offer me both, if i have both, i would not mess with refilling the canister type again. thanks for the "heads up"