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Force-V4 Forum Index » RC30 Discussion » Rc30 flooding the engine

 
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lordmoonpie



Joined: 18 Jan 2012
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PostPosted: Sat Nov 24, 2018 7:51 pm    Post subject: Rc30 flooding the engine  


Is it a common fault that the petrol gets past the tap even when closed and floods the engine causing hydraulic lock? I'm fed up of having to strip the bike every time I want to ride it because of this fault. I've renewed seals in the petrol tap and in the carbs but still it floods. Anyone know how to solve this please?

Also, anyone know where I can get a replacement metal fuel tap lever or a way to change the whole fuel tap to something that actually works?
Thanks 😉
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yakama
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Joined: 18 Jun 2010
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PostPosted: Sat Nov 24, 2018 10:21 pm    Post subject:  


Does your fuel Tap have the HRC mod? These old taps are prone to failure, I had the same with an old vfr400 tap with the hrc mod. Rebuild to standard or buy another though who knows what state that will be like either, assuming this is a road bike

http://hondarc30.free.fr/crbst_204.html
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lordmoonpie



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PostPosted: Sun Nov 25, 2018 9:46 am    Post subject:  


Hi Yakama, what is the HTC mod please? It is possible it's been modified as it started life as a race bike...
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StephenRC45
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Joined: 25 Oct 2009
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Location: Cornwall, UK

  

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PostPosted: Mon Nov 26, 2018 12:40 pm    Post subject:  


It is quite common fr this to happen as the fuel passed the diaphragm to bleeds down the vacuum line and floods #1 cylinder.

Be very careful with a flooded RC30 engine, it doesn't take much to bend the rods and cranks have been known to go.

You need to rebuild both sides of the tap, the tap side as well as the vacuum side. Or as Yakama says, do the HRC race kit mod and do away with the vacuum side and run it solely as a normal on/off tap.
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lordmoonpie



Joined: 18 Jan 2012
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PostPosted: Tue Nov 27, 2018 8:05 pm    Post subject:  


Spot on Stephen, it's #1 cylinder that is flooding. I end up taking all the plugs out, hand rotating the cylinder to tdc and then soaking up the petrol that is on the plug bore with paper towels. I get as much as I can out then leave the plug open to evaporate so hopefully no lasting damage.

I wouldn't know where to start with the fuel tap rebuild - if I send it to your shop is it a job you could do for me do you think while it's apart for winter?

Thanks Smile
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StephenRC45
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PostPosted: Tue Nov 27, 2018 8:24 pm    Post subject:  


Yes of course, The rebuild kits are relatively inexpensive and you can decide which direction you want to go regard a vacuum.

If you decide to, just send me a PM.
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