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Old 15 February 2007, 15:07   #1
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Suzuki df 70 question

I was running my motor with the cover off yesterday after checking it over etc and noticed a vaccuum stub on the back of the manifold wich is open and drawing air .
Ok if it were a car I would know that something was missing but is it supposed to be like this .

The motor runs fine and if I put finger over the stub the revs drop and it hardly ticks over which tells me its correct .

if anyone has a df 70 I would apreciate you having a look for me . probly same on 60 and maybe others

Its a brass stub about 1/2" in dia on the back of the inlet manifold just above the fuel inlet
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Old 20 February 2007, 18:22   #2
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df 70

I must be the only one here with a df 70 or 60 , dunno wether to cry of feel privaliged
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Old 20 February 2007, 18:28   #3
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Is there a similar stub anywhere else?
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Old 20 February 2007, 19:01   #4
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Hi Nos
No there isn't I looked for the posibility of a pipe having dropped off .
I would say its always run like this , and it runs and performs fine .

The spec does waffle on about idle air managment or something and if it were not supposed to be drawing air then surely the engine would run better when I put my finger over it .

guess Ill have to find one at a dealer and have a look .
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Old 21 February 2007, 04:41   #5
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You can try here to check if something is missing http://store.brownspoint.com/df70/709807.asp
Bye
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Old 21 February 2007, 14:22   #6
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thanks Shark
looking at that has put my mind at rest .
the little canister called ISC valve silencer (no 12 in the diagram ) is shown conected to the spigot in question which is open to the air .

there is no silencer canister or hose on my DF70 but thats probably because that link is for American spec motors and they tend to fit stuff that we don't need .

Thanks again Proper Job
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Old 21 February 2007, 18:36   #7
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Its got the same setup on the df140, thinking it was the air intake i gave it a few blasts of storage seal. then talking to local suzuki engineer and asking if this was correct, his face immediatelly froze went bright red and calmlly asked me "does it still start" luckilly yes.wiping sweat from brow
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Old 21 February 2007, 18:52   #8
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I can't see why that would do any harm really , it is an air intake of sorts ,

In the diagram there is a taper air screw shown , so maybe its used for setting air flow at some point , probably tickover ?
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Old 22 February 2007, 09:34   #9
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He probably scensed a few hundred quid comming to his till
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Old 22 February 2007, 17:34   #10
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Yes dealers , wether it be boats bikes or cars , Daylight robery
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