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On 20 Aug 2003 at 13:47, Jim Adney wrote: > On 20 Aug 2003 at 10:52, hisham bakr wrote: > > > Hello all, I am still trying to diagnose the cause for my engines slow > > return to idle, and I am at the point of looking at the distributors at > > hand. (AH & AB). while comparing I noticed that by swapping the vacuum cans > > the symptom is largly reduced. I also noticed that the cans have different > > no's stamped on the arms, 265, and 505. the Oldvolkshome Bosch reference > > site lists 07 022 as the correct can for the AB, and 07 052 for the AH. Are > > my vac. cans the wrong ones? > > The 3 digit numbers are the last 3 digits of the long 10 digit Bosch part #. > 265 is the right part for 68-71 (except for 71 AT) and 505 is the right one for > 73 MT and maybe 73AT also. You can see the differences in the advance curves in > the Bentley manual. The 505 vac can is for 73 AT & MT. The AB is for 70 MT while the AH is for 73 AT. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org