gee wizzz
I bought my boik on the understanding it had an interesting characteristic/fault.
86 XJ750
at idle and up to about 2k it regularly drops a lung.
Its always number 3.
Ihavent yet started to haul things apart but I have fitted a new plug and chopped the plug lead back 6mm so its got clean copper.
The XJ750 has 2 coils soI figured if its a coil itll drop 2
Im thinking holey diaphram but cant work out why its fine over 2k.
one thing i notice is that no3 feeds the vacume tap.
Thoughts?
To see a life newly created.To watch it grow and prosper. Isn't that the greatest gift a human being can be given?
Shafty Bugger
have you checked the idle jet?
at idle, try spraying a little eazi start around the inlet rubber that could be cracked ,
is no3 plug a lighter colour due to running lean?
Have you tried swapping the plug leads with no 2 to see if the miss moves
Is the float level in no 3 carb right.
Just some suggestions
To be old and wise, first you must be young and stupid.
on the up
Fine over 2K is interesting. If it was fine over about six I'd be considering the needle jet was buggered.
Tell you what it's still worth looking at the needle jet though. Could be it's on a different clip to the others, or maybe got a bit broken or bent.
And I to my motorcycle parked like the soul of the junkyard. Restored, a bicycle fleshed with power, and tore off. Up Highway 106 continually drunk on the wind in my mouth. Wringing the handlebar for speed, wild to be wreckage forever.
- James Dickey, Cherrylog Road.
could catch a monkey
Just ride it at over 2K revs.
Problem solved.
Originally Posted by rachprice
Where's the ride?
Swap the vacuum feed to another cylinder, see if the problem moves.
There's less vacuum at higher load (revs) so maybe the problem is borderline enough to only be present at the highest intake vacuum levels.
Cheers,
Colin
A .44 full of bullets
i have some diaphagms for an 83, laying about, if they are the same and if you want em, let me know.
mine looked like a giant Rd250lc
Yes I know my enemies
They're the teachers who taught me to fight me....
gee wizzz
Im always keen toget XJ parts :-)
To see a life newly created.To watch it grow and prosper. Isn't that the greatest gift a human being can be given?
No8 Wire Extraordinaire
Did you measure the plug cap? Could be that simple. Actually fixed Piglet (a friend's ex cop XJ750) like that.
Don't you look at my accountant.
He's the only one I've got.
gee wizzz
tell ya the truth ive done fuck all. left bar was bent so I fitted a new one is as far as i've gone with the darn thing.
Too busy churning out LT50 quads and cars
To see a life newly created.To watch it grow and prosper. Isn't that the greatest gift a human being can be given?
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