SOHC.co.uk Forums > CB750

miss at 3.8K

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billy192:
 :'( :'( went on a longer run and it seems when it get hot and you roll the throttle in top then open barrr barr miss miss then of it goes. not sure now what to do
Billy

Green1:
Billy
What are your points like are they pattern or genuine.
Talking to my dad his old Ascona developed a miss when hot a bit like what your describing and after changing the points it still ran the same it turned out to be faulty condensers.It took a while to discover because faulty condensers normally take out the battery as well.


Mick   
 

billy192:
both points and condensers are genuine Honda

its silly, up to the first 3-6 miles its great then as soon as you roll the throttle closed fast then try to pull away miss miss

i will get to the bottom of it
Billy

Bitsa (Ralph Wright - RIP):
Billy
Sounds rich to me as it is happy until running temperature.Its a bit like having the choke half on great when cold but crap when hot
Post a pic of your plugs mate.On the parts fiche the biggest main jet used was 110 and changed to 105 after a certain serial number.This is for the k4 model.So as regulations changed I am pretty sure the k6 was the same.
Cheers
Bitsa

billy192:
just finished putting back to STD
 clip in the 2nd from bottom
105 main
points checked
new clips on rubber boots
new petrol pipe

test drive tomorrow with plug chop
Billy

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