Posted September 20, 200915 yr comment_295217 I was driving my '71 Z and when I came to a stop and tried to start up, it died. I got it started again and continued. While climbing a hill I was losing power and finally the car died. It would not start and I had it towed home.After a few hours I tried to start it and it would only run with the choke pulled. I checked the carbs and using my hand, found the front one sucking much more than the rear. However when I put my Uni-Syn on them they were pretty closely synched up.The plugs for #4-5-6 looked decent although #6 had a small bit of oil on it.Compression was all over the map:1-1452-1503-824-1595-376-65#5 and #6 would cause low compression and therefore low suctiuon from the carb. The valve adjustment was OK and I did not see anything broken when I pulled the valve cover off.Aside from a complete tear-down, any other ideas? The car was running great before this happened. Link to comment https://www.classiczcars.com/forums/topic/33255-71-240-z-no-suction-from-one-carb/ Share on other sites More sharing options...
September 20, 200915 yr comment_295232 These are some ideas not cures ok. Torque the head again. Perhaps add a little bit of oil on the low cylinders and check compression see if it changes, some times the valves do not close all the way. vacumm leacks. I wish I was a mechanic to give you good advice I know is depressing specially when everything was working fine. Link to comment https://www.classiczcars.com/forums/topic/33255-71-240-z-no-suction-from-one-carb/#findComment-295232 Share on other sites More sharing options...
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