POV had purchased a lot of nos/repop parts from Welsh. Included was a vacuum booster. So after "eliminating?" the culprits I wanted to replace anyway, chasing down the misses and such, I pumped the old BB while at idle and noticed a smoothing out of the idle. Shall I just dive in and replace the old one? I have disconnected and plugged the vacuum tube at the SC intake and didn't notice anything different.

 

Aside from troubleshooting your factory details will be in section 12

Doc coming soon

 

See post # 4 , Repair Manual - Jaguar Forums - Jaguar Enthusiasts Forum