| Author | Message | ||
     Clay Mullins (Kyclay) New Member Username: Kyclay Post Number: 14 Registered: 06-2003 |
The instructions for installing a new fuel filter in my 96 D1 state that the fuel lines are to be "depressurized". Neither the archives nor the Tech section seem to tell how to depressurize the system. Can anyone provide me with the procedure. This is my first go at changing the filter. Thanx. | ||
| Mark (Mrroverman) Member Username: Mrroverman Post Number: 51 Registered: 02-2003 |
I just changed mine this weekend. I changed the filter when the engine is cold. And i opened the gas cap till you hear it depressurize. Then close it back. The nuts on the fuel fiter will be hard to remove. Make sure you soak it with PB blaster. | ||
| Joey (Joey4420) Member Username: Joey4420 Post Number: 126 Registered: 04-2003 |
If the '96 has a fuel rail like the '97's , then you can also open up the fuel pressure vavle and release the pressure (kind of looks like a tire valve. | ||
| Keith Armstrong (Keith) New Member Username: Keith Post Number: 4 Registered: 02-2003 |
I think that the "correct" way to depressurize the system is to remove the fuel pump fuse and start the engine - when it runs out of fuel, it's depresurized - caveat: this works on my '94 with OBD I | ||
| Tom Fioretti (Tom_in_md) Member Username: Tom_in_md Post Number: 84 Registered: 02-2003 |
Yes. On my 96, I pulled the fuel pump fuse while the engine was running. Then I got a rag and held it over the schrader valve on the fuel rail and gave it a push to release any remaining pressure. I guess you could leave the gas cap off too. | ||
| my96disco (Trevorh) Member Username: Trevorh Post Number: 198 Registered: 02-2002 |
Clay, The easiest thing to do is hold a rag over the end of fuel line where it attaches to the filter while you undo it the last couple of turns and that will catch the fuel. Not by the book but super easy. Trevor H | ||
| Leslie N. Bright (Leslie) Dweb Lounge Member Username: Leslie Post Number: 2407 Registered: 02-2002 |
Why pull the fuse, if instead, you leave it off and use the schrader valve to depressurize the fuel-rail? Or, leave it off overnight and change it first thing the next morning.....  -L | ||
| Greg Bright (Gregd2) Member Username: Gregd2 Post Number: 91 Registered: 06-2002 |
I just did this this weekend. Undo the gas cap and under the hood on top of the engine there is a valve that looks like a tire valve. Once the pressure is released in these two places, the only fuel you have to deal with is what's in the filter. It was maybe a couple ounces. It wasn't bad at all. | ||
| Sandy Grice (Apg) New Member Username: Apg Post Number: 13 Registered: 02-2003 |
If you have never done it, be prepared for a PITA job. Aluminium filter cannister, steel fuel lines and some kind of monkey-snot sealer add up to corrosion and tough lines to undo. Use proper line wrenches, but even with these, the filter may not be willing to give up the ghost. A nut splitter didn't work as the aluminium just smooshes. I eventually resorted to a Dremel and only made a *few* sparks. I used grease as an anti-seize on refit instead of a sealer. Liberally douse with PB Blaster or your penetrant-of-choice well beforehand. Filters (US-made, all steel) are inexpensive, about $9. Try: Fram G3727 A/C GF481B NAPA 3481 Purolator F331 4M or GF3144M Wix 33481 These were used on Jags and several GM vehicles and are quite common/easy to source. Cheers | ||
| Steve Rupp (Steve_rupp) New Member Username: Steve_rupp Post Number: 17 Registered: 03-2003 |
Listen to Keith. One other thing you should is clamp the line going to the filter and leaving the filter or all the gas in the line will dump out on you when you remove the filter. | ||
| Douglas McMillan (Mcmillan) Member Username: Mcmillan Post Number: 55 Registered: 06-2002 |
The correct way to depressurize is :- 1) open the fuel filler cap. 2) remove the fuel pump fuse. 2) Run the engine until it stalls. 3) To be sure once the engine dies, press the schrader valve covered with a rag. Then you can start the fuel system maintenance. I replaced the fuel filter without clamping the lines. If you put the fuel filler cap back on then the fuel should not leak out too bad. There will be fuel spillage, mainly from the fuel filter. | ||
| JPinson (Jeffro0502) Member Username: Jeffro0502 Post Number: 83 Registered: 02-2003 |
I just let it come out when I broke loose the fittings on the fuel filter. I had the cap loose. And also have 3/4 of a tank of gas when I did....a little gas came out but not much, intstalled the new filter, I also don't think you need any sealer. Its made to work w/o sealer. | ||
| Brent (Silly_me) Member Username: Silly_me Post Number: 41 Registered: 07-2003 |
Yeah I would not recommend crimping the lines. That could lead to problems down the road. What you can do is find yourself an UNpainted golf tee and stuff it in the hose to limit spillage. |
