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Post by sparky on Nov 28, 2009 22:51:48 GMT
The gpz has had a long blast out after the petrol starvation but on acceleration the bike hesitates then picks up Its running K&N filters and these are clean , other than that the bike starts fine and ticks over fine but just this slight hesitant acceleration but only like for a second or two. Would anyone know what it mite be
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Post by Burchy on Nov 28, 2009 23:01:34 GMT
I'd check your carb diaphrams for any small splits and for air leaks generally around the carb manifolds
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Post by sparky on Nov 29, 2009 9:38:53 GMT
I havent checked the diaphrams yet but on closer inspection it looks like the inlet rubbers are cracking , weather or not they have split right through is hard to tell By the diaphrams do you mean the ones that sit in the tops of the carbs Ive olny ever once tackled carb maintenance and that was on me old RD250 many moons ago so is this a easy job to do
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Post by Young Burchy on Nov 29, 2009 12:28:07 GMT
Yeah take the top off, 4 screws, you'll see it then. My 400 has a chunk of bicycle puncture repair kit on no.3, as that had split so bad,a part had actually come off. Take the diaphragm off gently and then it starts getting interesting Check pilot jets too, get some carb cleaner and squirt it though every little whole and orifice, that should eliminate any muck blocking those up. Only do one at a time mind
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Post by Burchy on Nov 29, 2009 17:29:44 GMT
Sparks, if you haven't delved into the mysteries of CVK carbs, I look just have a look at the diaphrams. Don't think mucky pilots would cause a stutter on pickup.
You could try just bunding some black insulating tape round the manifold to see if it makes a difference
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Post by sparky on Nov 30, 2009 7:27:30 GMT
Yesterday the bike just refused to start and although the bank of carbs was took off and thoroughly checked over inc all the jets by a friend of mine , the inlet rubbers were slighly cracked but only seurface cracked so ive put silicone on the outside of them for a tempory fix till i get new ones Interesting seeing the carbs worked on and i took note of all the jets and what they do The bike has a spark at the plugs although week at that so the battery has been on charge all night ...had to eliminate the carbs so thats done and all ive got to do is put it all back together . The plug leads look iffy and could be the problem but im getting some new ones today from the NEC . All good fun Keep you posted ...cheers all
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Post by lightspeed on Nov 30, 2009 16:09:06 GMT
Most bikes do need a good battery to both crank over the engine and supply enough spark to fire up. Hopefully the overnight charging will help.
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Post by sparky on Nov 30, 2009 20:59:39 GMT
Agreed there lighty , and someone else mentioned that as well the other day saying he bet it is the battery Only if it still wont start with a fully charged battery it will be back to square one but electrical this time Fingers crossed it will work tomorrow when all back together
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Post by Burchy on Nov 30, 2009 21:55:29 GMT
Going back to the original problem, as I understand it, the bike runs well enough, but just hesitates on the throttle? Don't reckon that's electrical
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Post by sparky on Dec 1, 2009 16:08:38 GMT
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Post by jefflthomas on Dec 1, 2009 16:47:01 GMT
is the vacuum line on the petcock?
whoops...you edited your post
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Post by brakeline on Dec 1, 2009 17:51:09 GMT
Sparky, make sure the carbs are full, This happened to me and lo and behold the carbs were empty, so I put the tank back on, put it on to prime, cranked the engine and it eventually started. Starts all the time now.
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Post by kevrex on Dec 1, 2009 22:56:27 GMT
Sparky, make sure the carbs are full, This happened to me and lo and behold the carbs were empty, so I put the tank back on, put it on to prime, cranked the engine and it eventually started. Starts all the time now. Yeah thats what i would do
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Post by sparky on Dec 2, 2009 13:21:07 GMT
Yep , the vacuum line is on the petcock JT , and ive tried the tap position on prime as well Brakey . The float bowls are full cos we forgot to tighten up the drain screws and it all ran out of them . What if anything would stop the fuel from entering the inlets , if the choke is at fault is there anything i can do to remedy this The bike is turning over no problem but just wont fire up
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Post by jefflthomas on Dec 2, 2009 14:10:47 GMT
ether???
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