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Messages - weetchie

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New Member Introductions / Re: honda cb400f 1976
« on: June 04, 2026, 09:13:04 PM »
hi everyone thanks for all your suggestions i think i best start over and check from timing to valve clearances i dont think it the carbs as i have 2 sets and it's doing the same thing on both sets i will let you know when all is completed thanks again
mike

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New Member Introductions / Re: honda cb400f 1976
« on: June 04, 2026, 03:13:10 PM »
hi thanks for replies i have done a top end refresh with new rings honing the bore stripped top end removed the vavles and re lapped them new gaskets used reset tappets to 0.005 and timing is spot on but it still won't idle and when i try to sync carbs only number 2 is pulling a vacuum on my Carbtune pro i have been struggling for about 2 months i have ultrasonic cleaned carbs twice and bench synced but still no joy, i think its because of the low compression but not sure
thanks
mike

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New Member Introductions / honda cb400f 1976
« on: June 04, 2026, 01:25:35 PM »
Hi everyone i am a 62 year old biker and i am restoring a Honda cb400f 1976  i am having problems with low compression of 95 across all four cyclinders which i think is effecting the running of the bike as it will not idle off the choke i have rebuilt the carbs twice but when i try to sync them only one carb is pulling a vaccuum if there is anyone who has a good set of barrels they dont need and would sell or if anyone who lives near Didcot oxford that could help me get the bike on the road i would be very grateful thanks
mike

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