The pump sits in a basket (what might be described as a screen) that "clicks" into another retainer basket after a partial turn. Like most mechanical things, it's righty tighty and lefty loosey. Some folks have reported being able to twist the pump holder basket out of the retainer by hand. Some have reported that a leather glove aided in this process.
The tool is a circle of plastic with square notches in it that mate up with the irregular edge of the pump basket so that you can apply rotary force to release it. Someone described using a squared wooden stick placed across a couple of the basket notches to allow disengagement.
I doubt you'll find much. There should be no lining in the tank. If it were something that gets sucked into the screen, reducing fuel flow, it wouldn't effect performance intermittently, it'd be there all the time once sucked into the screen. I'm pretty sure that once the pump starts to run, it puts out the same pressure regardless of the fuel demand from the engiine. It only has one speed.
I think most hesitation type problems result from electrical issues.
Sears sells those rubber strap wrenches.I used one on my S/C'd Jeep Grand
Cherokee 4.7L fuel tank to get the pump out and install a high flow. They work very well for that since it's a strap and will fit a large diameter variable shaped object requiring twist. They also have a large diameter rounded channel locks. Both too cheap not to have around as "HTF" am I gonna get this off tools. ;=)
'91 Indigo Blue 200 20V TQ, Black Sport Interior, XM Radio, CAC UrS steering wheel, PIAA Xtreme White DOT Headlights, rear diff lockable at any speed, Porsche Big Red/ECS Tunning BBK, Stainless Steel Brake Lines, 17" S-4 six spokes with Bridgestone 245/45/17 Potenza Pole Position 096 All Seasons. Need some new cats before 7/09 since mine are gutted and I need to pass emissions.
I know that the Ur cars have a soul, extreme satisfaction/irritation simultaniously, another love/hate relationship in my life.
SEE SOME CARS: go to wjwheezer Photo Search for wjwheezer scroll down to "Webshots Community - wjwheezer's Photo Home Page"
I did my plugs (W7DC+), and wires (Beru)this weekend. No changes. Cap and Rotor are new but, Chinese made :-( have to order a Bosch one.
I have Thermostat, Multi-function Temperature Sensor, Idle temp sensor and ECU temp Sensor or order from Autohaus Arizona.
I guess I'll get those in before I pull the pump.
When it happens it feels almost like fuel starvation. Then it clears up. I thought maybe something was floating into the screen and then away but, suction would keep it there I guess. I also want to check and clean the check valve, see if it has anything to do with my cranking for 10-15 seconds at cold start but, I guess it could be the cold start injector. I'll have to test it.
I have always just used a hammer and a punch to turn the retaining ring. Be patient and don't try and do it with one swing. Try and spread the impact points around the ring evenly as well. To remove the pump it is held down at 3 points by 3 fingers that grab the triangular pump holder. Push the fingers out at the same time and pull up on the pump.
When you remove the fuel lines be sure to hold the connectors at the top of the tank flange plate. If you don't it is too easy to twist the metal out of the plastic. It is easy enough. HTH.
1983 Ur Quattro. RS2 Replica turbo, Custom 8.5:1 CR Pistons, sleeved block, MC2 cam, micropolished crank, shot-peened rods, 20VT HG, ARP Head Studs, Supertorque T-belt set up, BPV, Dual diaphragmed WG, chipped ECU, D-ported intake runners, 7mm stem Ti valves, aluminum oil pan, rear sway bar, 5-point harness. "Essica"
1983 Ur-Quattro Club Rally car. Still needs engine and transmission... and a number of other things. "Adam Bomb"
1987 Coupe GT. 98,000 original kms, tornado red. "Rosie". Sold.
1988 Olympic Edition 5000 CD Turbo Quattro Avant. "Red Devil" - Sold
1993 Audi V8 Quattro 5-speed conversion, IA chip set, short shift kit, full dual exhaust with 911 Turbo cats. "The Blue Meanie" - Sold
1990 Audi V8Q Pearl - Demolished.
1990 Audi V8Q Pearl - Sold
1989 Audi 200Q Black- "FrankenAudi" Alive again! - Deceased - Taken off the road by ERASE (Eliminate Racing Activity on Streets Everywhere) - Sent directly to crusher, do not pass GO, do not collect $200.
1989 Audi 200Q Avant Black - "FrankenVagen" Deceased May 7th, 2006 - Cause of death: Front end removed in collision - Boy in Ford Expedition SUV ran red light doing 70kph.
1989 Audi 200Q Sedan Tornado Red - "Cherry Bomb" Deceased January 19th, 2004 - Cause of death: Rear end collision - Girl on phone in Buick doing 80kph.