intake pic
09-08-2008, 05:41 PM
#13
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IM update from my previous post
I got the doghouse apart, an overnight soak in PB blaster on the joint did the trick. The joint is sealed by a pretty springy round gasket, I'd say abt 3.5mm The shafts are well and truly frozen in their bushings. I am soaking them in various chemicals in the hope of magic. Offhand I cannot see how the flapper valves are attached to the shafts. They must be indexed somehow. The sections of the manifold feeding the intake ports are very dirty, presumably from a combination of spitback from agressive valve timing and oil vapor from the crancase vent system, which is extensive. Perhaps some of this material has contributed to jamming.
I just bought an Acura TL as a backup, backup car, (need something to drive when the A8 is apart) sent my son to the Bethesda, MD Honda dealer for a gallon of coolant, they charged him $32 for pre-diluted coolant. Woo, Audis are cheap! I'm going to bring them their gallon back.
No codes or obvious problems from the stuck IM parts. I checked the vac motors underwater, one had a leak in the center at the ball fitting. I put some "SEAL ALL" on it.
I just bought an Acura TL as a backup, backup car, (need something to drive when the A8 is apart) sent my son to the Bethesda, MD Honda dealer for a gallon of coolant, they charged him $32 for pre-diluted coolant. Woo, Audis are cheap! I'm going to bring them their gallon back.
No codes or obvious problems from the stuck IM parts. I checked the vac motors underwater, one had a leak in the center at the ball fitting. I put some "SEAL ALL" on it.
09-09-2008, 04:40 AM
#16
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How to know if they work on D2 facelift
I did some testing. With the top engine cover off, both levers should be resting against their respective stops (ie vacuum diaphram relaxed). When you start the engine and idle, both vacuum diaphrams should be fully engaged and both levers should be fully extended (ie away for their respective stops.) If your car does this, then the vacuum system and levers are not stuck. I have had to work one of mine loose by hand but I did not test before hand to see if it was stuck. Just my experience, hope this helps.
09-09-2008, 05:15 AM
#19
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Re: so, keep me honest. You should be able to move (rotate) them easily by hand correct?
The one on the left hand side (passenger side) is hard to move by hand but can be done (this was the one that was tight on my car). The one on the right hand side (driver side) is easier to move by hand. This assumes engine is off.
Please use judgement. If you feel that you may break the lever with too much excessive force, then it is probably stuck and you may not want to risk breaking the lever.)
Please use judgement. If you feel that you may break the lever with too much excessive force, then it is probably stuck and you may not want to risk breaking the lever.)