Won't start on choke!
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- Ali J
- Posts: 18
- Joined: Tue Jan 30, 2007 6:50 pm
- My Bike: tomos moped
- Location: Kintore, Aberdeenshire
Won't start on choke!
Hi folks,
I’m new to your forum and due to my ZXR L5 (UK) having a hard life prior to me getting it, I think may need your help on few occasions.
Here’s the problem I’m having. My bike will not start at all when I put the choke on regardless of whether it is hot or cold.
To start the bike you have to hold throttle fully open and keep winding the starter a few times after the engine starts. With the throttle still wide open, it takes two or three seconds before the engine responds normally. After that yer away!
I’ve also noticed that when riding, and at any revs, if I hold a constant throttle the engine sounds like it is spluttering. When you increase the revs it pulls fine until you hold it constant again.
I’ve tried a few things to cure the problem like new plugs, new battery and carb cleaner sprayed into the air box.
I’m thinking that the carbs may need stripped down and cleaned but I wanted to check before going ahead. The bike has done 26000 miles and has no service history. Does anyone have any ideas?
Cheers
Ali
I’m new to your forum and due to my ZXR L5 (UK) having a hard life prior to me getting it, I think may need your help on few occasions.
Here’s the problem I’m having. My bike will not start at all when I put the choke on regardless of whether it is hot or cold.
To start the bike you have to hold throttle fully open and keep winding the starter a few times after the engine starts. With the throttle still wide open, it takes two or three seconds before the engine responds normally. After that yer away!
I’ve also noticed that when riding, and at any revs, if I hold a constant throttle the engine sounds like it is spluttering. When you increase the revs it pulls fine until you hold it constant again.
I’ve tried a few things to cure the problem like new plugs, new battery and carb cleaner sprayed into the air box.
I’m thinking that the carbs may need stripped down and cleaned but I wanted to check before going ahead. The bike has done 26000 miles and has no service history. Does anyone have any ideas?
Cheers
Ali
Do we all grow horns when we ride!!
- masterofinsanity
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in no particular order!!......
have you got a petrol can? goto the garage, fill it up, pour over bike and light a match
alternatively, unscrew the screws at the bottom of the float bowls and see what crap pours out.
start the bike with no choke and progressively give it some, check for signs of head gasket buggery!, sounds like your carbs need balancing, check for oil contaminants, have you got sparks from all 4 leads? have you got all 4 leads??
once running does the clutch rattle ( this will determine you have a zxr400 or not) then we all know we are on the same wavelength.
could be fuel gone off in the carbs and turned to jelly (warning do not eat this jelly)
cut your losses and give me the bike
as i said in no particular order so if you could give me the bike after you have checked everything and before you torch it, much appreciated.
sorry if i've confused you i've had a beer or 2 and my minds not quite what it should be
have you got a petrol can? goto the garage, fill it up, pour over bike and light a match

alternatively, unscrew the screws at the bottom of the float bowls and see what crap pours out.
start the bike with no choke and progressively give it some, check for signs of head gasket buggery!, sounds like your carbs need balancing, check for oil contaminants, have you got sparks from all 4 leads? have you got all 4 leads??
once running does the clutch rattle ( this will determine you have a zxr400 or not) then we all know we are on the same wavelength.
could be fuel gone off in the carbs and turned to jelly (warning do not eat this jelly)
cut your losses and give me the bike
as i said in no particular order so if you could give me the bike after you have checked everything and before you torch it, much appreciated.
sorry if i've confused you i've had a beer or 2 and my minds not quite what it should be

Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
- masterofinsanity
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Oh sorry you came here for help??? i've been looking for it for 35 years and still not found it 

Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
-
- zxr400 oc member
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- masterofinsanity
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mmm i've just spent the last half hour pmsl at myself now i'm pmsl at bozzie! 

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- RedexRobB
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- My Bike: ZXR400L3
- Location: Ipswich, Suffolk


Welcome to the forum mate

As baz said really, minus one or two points. Definately sounds like a carb problem.
Has the bike been standing? If it has it might account for the rough running and the crystalised fuel. In which case get the carbs off and give em a good clean with some carb cleaner. Also might be worth giving the air filter a clean or replace it while its all apart. Not sure how the element will cope with the cleaner, may have even cleaned the oil off of it.
Give that a go and see how you go mate.

In fact before you do any of that, try running some Redex through and see if that sorts things out. 99p bottle from halfords will go in one full tank of petrol and cleans all your carb inards, its pretty good stuff, see how it goes.
- masterofinsanity
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robB do you work for redex or something?? any free samples ?? as robB says running carb cleaner through the filter may be a bad thing as the carb cleaner is pretty good stuff for shifting grime it may have moved the crap from your filter into your carbs and made things worse.??
Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
- RedexRobB
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- masterofinsanity
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nice sig robB but have you discovered whisky it works better than redex!
oooerrr d'ya think we've scared him off???
oooerrr d'ya think we've scared him off???
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- RedexRobB
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- masterofinsanity
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i'll tell ya mate a few drops of whisky and it seems to go a lot faster!!
can't wait to get the engine back in!
can't wait to get the engine back in!

Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
- RedexRobB
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- masterofinsanity
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they wouldn't need to they make their own rules up.
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- Ali J
- Posts: 18
- Joined: Tue Jan 30, 2007 6:50 pm
- My Bike: tomos moped
- Location: Kintore, Aberdeenshire
Cheers for that, I'm none the wiser for it though!!
I had cleaned the air filter and whilst it was out I sprayed the carb cleaner in so I don't think I would have forced any shite through it.
Mr Redex, I'm on yer wave length cos I've given that a bash as well!!
My clutch doesn't rattle so I'm thinkin the petrol over the bike and lighter seems the best option as it can't possibly be a ZXR!
I'm on holiday next week so won't need the bike for a few days. I'll get the carbs oot for a look and let you know what I find.
I had cleaned the air filter and whilst it was out I sprayed the carb cleaner in so I don't think I would have forced any shite through it.
Mr Redex, I'm on yer wave length cos I've given that a bash as well!!
My clutch doesn't rattle so I'm thinkin the petrol over the bike and lighter seems the best option as it can't possibly be a ZXR!
I'm on holiday next week so won't need the bike for a few days. I'll get the carbs oot for a look and let you know what I find.
Do we all grow horns when we ride!!
- masterofinsanity
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- Joined: Thu Aug 29, 2002 12:36 am
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nice one dude, welcome to the forum by the way and nice avatar!!
Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.