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Author Topic: Suzuki DR 750 BIG fuel consumption  (Read 583 times)

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Offline Fred4stroke

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Suzuki DR 750 BIG fuel consumption
« on: January 10, 2011, 03:17:51 pm »
Help me!

I have a 1988 Suzuki DR 750 BIG.  Its fuel consumption is very bad, 11km/L!  Can someone tell me what could be wrong?
« Last Edit: January 10, 2011, 03:18:54 pm by Fred4stroke »
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GreenMamba1974

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Re: Suzuki DR 750 BIG fuel consumption
« Reply #1 on: January 10, 2011, 05:52:55 pm »
there is a bloody big hole in your fuel tank  :peepwall: :pot:
 

Offline Old Baldy

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Re: Suzuki DR 750 BIG fuel consumption
« Reply #2 on: January 11, 2011, 01:44:00 am »
- REALLY filthy air filter
- Stuck choke/enrichner slide or partially closing slide
- Worn carb needle jet
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Offline Wild Hearted Son

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Re: Suzuki DR 750 BIG fuel consumption
« Reply #3 on: January 11, 2011, 07:48:31 am »
Hello & welcome to the forum
It is always fantastic to find another DR BIG rider

Apart from the things mentioned above,

My experience with these old things is that if you're running on original carbs - the plastic thingies inside the carbs have worn out & are causing the slides to stick. If you are also having spluttering & bogging then I'm almost convinced that this is the case.

Both DR_BIG_750 & I have had the same problem with ours ( to be expected after 20 + years I suppose ) - He managed to source a set of BMW Funduro carbs & that fixed his problem - I ended up changing my carbs to Keihin ones.

regards
WHS

« Last Edit: January 11, 2011, 10:36:44 am by Wild Hearted Son »
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Offline Old Baldy

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Re: Suzuki DR 750 BIG fuel consumption
« Reply #4 on: January 12, 2011, 04:17:34 am »
Dunno what plastic thingie is referred to above, but some Mikuni CV carbs tend to wear their needle jets very quickly (requiring replacement every few years). If the choke/enrichner and air filter are both good, then this is what I'd first tackle.

You can get Mikuni CV rebuild kits pretty cheap through Sudco in the States, if you can get them over to RSA in someone's luggage.
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Offline grego

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Re: Suzuki DR 750 BIG fuel consumption
« Reply #5 on: January 12, 2011, 05:07:02 pm »
You can get Mikuni CV rebuild kits pretty cheap through Sudco in the States, if you can get them over to RSA in someone's luggage.
mcomp.co.za can order stuff from Sudco... email them if you need a carb rebuild kit.
 

Offline Wild Hearted Son

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Re: Suzuki DR 750 BIG fuel consumption
« Reply #6 on: January 13, 2011, 07:20:42 am »
As far as I'm aware the plastic sleeves that wear through are not included in the carb rebuild kits.

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Offline Kokkus

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Re: Suzuki DR 750 BIG fuel consumption
« Reply #7 on: January 14, 2011, 07:50:03 am »
Help me!

I have a 1988 Suzuki DR 750 BIG.  Its fuel consumption is very bad, 11km/L!  Can someone tell me what could be wrong?

Sjo, ek dink jy ry net K@K ou maat...!  :biggrin:
Ek dink ons moet 'n klomp bier koop dan tune ons jou bike een Saterdag...!
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