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Removing A4 carbs

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Andrew_s
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Removing A4 carbs

#1 PostAuthor: Andrew_s » Sat Nov 03, 2018 5:21 pm

Hi folks,

I'm going to remove the A4's carbs in the coming weeks as fuel has been leaking for a while which looks more like a dirty golden syrup under the float bowls - I think it's coming from perished O-rings in the drain screws but any common areas to look out for?

Anything to be aware of before I start?

Cheers
Andrew
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Previous Zeds: Z750B1 Twin, Z650B1, Z750E

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warren3200gt
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Re: Removing A4 carbs

#2 PostAuthor: warren3200gt » Sat Nov 03, 2018 5:57 pm

Just check the drain screw o rings before taking the carbs off. If it is leaking from the drain screws then taking the carbs off is a little excessive. Orange / golden syrup is evaporated modern fuel.
Short term fix if its o rings is a smear of silicon gasket goo around them before screwing back in. Leave over night to set before turning the tap on.
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Andrew_s
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Re: Removing A4 carbs

#3 PostAuthor: Andrew_s » Sat Nov 03, 2018 6:44 pm

Thanks, got the O-rings, but the carbs they're looking pretty grubby so a decent degrease will do them good - just wondered if there was anything to be mindful of when taking them off.
Bikes:
Phil Churchett's old Z900 A4: PRE 2R - https://www.flickr.com/photos/115740825@N05/albums/72157680116996884
1993 FireBlade https://www.flickr.com/photos/115740825@N05/albums/72157683771843155
Previous Zeds: Z750B1 Twin, Z650B1, Z750E

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Re: Removing A4 carbs

#4 PostAuthor: warren3200gt » Sat Nov 03, 2018 7:06 pm

Hardest bit is setting cables to the correct tension on re instalation which is eay to do. If your striping them down for a clean just ensure you keep the bits together for each carb.
PUM 488 June 20
76 Z900A4, 77 Z650B1, 77 KZ650B1, 77 Z1000A1, 82 Z1000J2, 89 ZXR750H1

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Re: Removing A4 carbs

#5 PostAuthor: zededeee » Thu Nov 08, 2018 1:41 am

Esso super premium unleaded petrol (97 + octane) does not contain ethanol, BP possibly not also. See their sites for more info. i tested the Esso fuel and no ethanol was there. Ethanol is what causes the problems on seals and sticky deposits. There is no legal requirement to add 5% ethanol to 97+ octane petrol.

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Re: Removing A4 carbs

#6 PostAuthor: Ultim8pc » Thu Nov 08, 2018 8:53 am

In my experience, if they exhibiting goop on the outside then it's worth taking them off and looking in the float bowls to see if they need a clean. Use new float bowl gaskets, I recommend the Keyster ones (and their rebuild kits) as they are not made form card and I have never seen any of them leak after fitting.
But while you have the carbs out I'd recommend checking them thoroughly and setting them up.
Give me a shout if you get stuck.
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Re: Removing A4 carbs

#7 PostAuthor: ddg900 » Thu Nov 08, 2018 11:16 pm

Is it possible to remove all four float bowls with the carbs in-situ? just wondering because I have a slight leak from the bowl gasket on no.2 carb, and bowl screws in carb 3 could do with replacing with new ones - having to take the whole shebang out to get at/replace the one weepie gasket/four screws is maybe a task not worth doing until the carbs actually need a full strip n clean?
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Re: Removing A4 carbs

#8 PostAuthor: PAULJAC47 » Fri Nov 09, 2018 8:57 am

Done it loads of times,a small right handle ratchet with a cross head,plus a mirror and a piece of rag to catch the juice...Paul j
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Re: Removing A4 carbs

#9 PostAuthor: ddg900 » Fri Nov 09, 2018 10:20 pm

Thank you :) well, there's the next job ... :D
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Andrew_s
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Re: Removing A4 carbs

#10 PostAuthor: Andrew_s » Sat Nov 10, 2018 6:52 am

Thanks for tips and advice folks - Paul, useful tip about the float bowls!
Bikes:
Phil Churchett's old Z900 A4: PRE 2R - https://www.flickr.com/photos/115740825@N05/albums/72157680116996884
1993 FireBlade https://www.flickr.com/photos/115740825@N05/albums/72157683771843155
Previous Zeds: Z750B1 Twin, Z650B1, Z750E


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