De-pressurize for new fuel filter
#1
De-pressurize for new fuel filter
95 850, going to replace my fuel filter this weekend, I've read about de-pressurizing the system, What's the easy preferred method for this?
Sounds like I pull the fuel pump fuse and run it until it stalls? (will it even run without the fuel pump functioning?) Is that the right way to do it? dont want to damage anything. if I just push that little Schrader valve up on the fuel rail, does that de pressurize the whole system?
Thanks! Dave
Sounds like I pull the fuel pump fuse and run it until it stalls? (will it even run without the fuel pump functioning?) Is that the right way to do it? dont want to damage anything. if I just push that little Schrader valve up on the fuel rail, does that de pressurize the whole system?
Thanks! Dave
#2
95 850, going to replace my fuel filter this weekend, I've read about de-pressurizing the system, What's the easy preferred method for this?
Sounds like I pull the fuel pump fuse and run it until it stalls? (will it even run without the fuel pump functioning?) Is that the right way to do it? dont want to damage anything. if I just push that little Schrader valve up on the fuel rail, does that de pressurize the whole system?
Thanks! Dave
Sounds like I pull the fuel pump fuse and run it until it stalls? (will it even run without the fuel pump functioning?) Is that the right way to do it? dont want to damage anything. if I just push that little Schrader valve up on the fuel rail, does that de pressurize the whole system?
Thanks! Dave
#7
And ..... take the gas cap off. sometimes the tank will hold a little pressure and push the gas out when you disconnect the filter.
Oil drain pan comes in very handy and be very careful if you're doing it inside that you keep a trouble light away from any chance of getting hit with splashing fuel.
Oil drain pan comes in very handy and be very careful if you're doing it inside that you keep a trouble light away from any chance of getting hit with splashing fuel.
#9
#10
fuel filter
I got my filter from FCP, I think it's a Bosch. 15 bucks or so. RSPI, mine just turned 200k last weekend. I think I've got 200,125 today. Whats your mileage?
Would it be a bad idea to (gently) tap a small hole in the old filter to drain the gas out into my drain pan after doing the Shrader and opening the gas cap? would that introduce a spark? Theres no going back if I put a hole in it... Dave
Would it be a bad idea to (gently) tap a small hole in the old filter to drain the gas out into my drain pan after doing the Shrader and opening the gas cap? would that introduce a spark? Theres no going back if I put a hole in it... Dave
#11
I don't think anyone would recommend tapping a hole in your fuel filter. That sounds like asking for a fire and trip to the burn ward.
Like everyone else has said, just have a pan ready to catch what gravity drains. I have some hose pinch pliers that I use for that sort of thing (to lose as little as possible), but your could carefully use some vice grips to do the same thing.
Like everyone else has said, just have a pan ready to catch what gravity drains. I have some hose pinch pliers that I use for that sort of thing (to lose as little as possible), but your could carefully use some vice grips to do the same thing.
#12
I doubt putting a hole in the filter will cause a spark or fire. I would be more concerned with introducing some metal shaving into the fuel system.
The think I experienced was on the tank side of the filter, it seemed that fuel was never going to stop flowing, especially if there was a lot of gas in the tank. I would not like crimping my fuel like so I just had the other filter handy and ready to do it as fast as I could to loose as little gas as possible. You could also have something to try to plug the like, like a rubber cork. There was no pressure, just like a syphon from the line.
The think I experienced was on the tank side of the filter, it seemed that fuel was never going to stop flowing, especially if there was a lot of gas in the tank. I would not like crimping my fuel like so I just had the other filter handy and ready to do it as fast as I could to loose as little gas as possible. You could also have something to try to plug the like, like a rubber cork. There was no pressure, just like a syphon from the line.
#13
filter
Well, thought I'd ask before I popped a hole in there.
Just this morning I put $35 gas n there, I was almost empty. Should have left it and changed that filter. Didnt even think about that. well it wont take very long to use 35 bucks worth of gas. Think I'll opt for the cork trick. Dave
Just this morning I put $35 gas n there, I was almost empty. Should have left it and changed that filter. Didnt even think about that. well it wont take very long to use 35 bucks worth of gas. Think I'll opt for the cork trick. Dave
#14
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#17
I just wouldn't bother with punching a hole in it. If you don't use the schrader valve on the fuel rail to release the pressure you can still pretty much control the discharge buy just slowly pulling the hose off the filter. You just want to be aware it may spray a little bit, there might be a little residual pressure in the line and you surely will have some fuel dripping or running out of the line when you finally do separate the line from the filter. How much will depend on a lot of things like angle of the car, temperature (pressure in tank) and your speed of placing the new filter back in. I'd break both sides loose before you open either end so it's quicker to replace. Then remove the tank side first as usually that is the side you'll get the most fuel leaking from and if you put the new filter in, it will start to fill and hold some fuel while you put the engine side on. Best thing is have a drain pan handy, drape a rag over the joint when you first try to separate the line so it catches any spray. Just drape, don't wrap as you'll want to get it out of the way quickly and have the replacement filter right there and ready to place into the line and your fuel loss will be minimal. If you haven't done one before I'd recommend safety glasses and even if you have they are a good idea just in case.
Last edited by Kiss4aFrog; 05-02-2012 at 02:56 PM.
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