Idle speed carb vacuum issues

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Gintoff
New to XJR
New to XJR
Posts: 4
Joined: Thu Jan 31, 2013 4:43 am
Location: Lithuania, Vilnius

Hello friends. I took some time and took off and cleaned cylinder head , cleaned and tapped valves, changed pin on oil pomp's sprocket but when i assembled everything back I faced one issue: when engine runs at idle speed I cant sync carbs because vacuum meter goes wild, arrow jumps from positive pressure to negative, but when I hit throttle and in about 2500rpm, it goes almost steady in vacuum pressure. What's causing it?? :shrug: And how can I fox it, because I really want to sync my carbs and enjoy my reborn XJ :thumbsup: Thanks for your help riders!

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