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Post by kirriepete on Jul 22, 2014 8:49:33 GMT
What it says up there - best I've managed so far on the D9 is 35 with a very gentle right wrist. The carbs are well balanced, purrs smoothly at tickover, doesn't appear to be running rich (plugs are a good colour), brakes aren't binding, so do I just accept it's a thirsty bugger or is there something I can tweak? Saying all that, I have noticed every now and then the revs stay a little high when shutting the throttle/changing gear - cable's not sticky and the butterflies look fine, please don't tell me I have to strip the carbs down coz I feckin' hate doing all that fiddly stuff with tiny jets and so forth .....  |
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Post by m40man on Jul 22, 2014 9:31:58 GMT
I know you haven't had her long - have you checked the state of the air filter yet? Otherwise, maybe you're just a hooligan but can't admit it  . |
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Post by Deleted on Jul 22, 2014 11:41:34 GMT
I had a similar problem when I had the D9 that davey bev has now. (Apart from being a FB) I couldn't get much more than 130 from a tank. Took it to Harty's to get him to check it as I couldn't find anything wrong, neither could he, checked everything including TPS, air filter, valves. He suggested I try premium petrol for a bit, I had been filling up on Riverside Tesco. With premium I got 160 to a tank, I know there's no logical reason for it. Filled up with normal petrol from the Shell garage and eventually the bike returned to 160-170 to a tankfull. Never did get to the bottom of it, but the only possible explanation was that the premium petrol cleaned something out. Either that or for a space of time a few years ago Tesco Riverside had contaminated petrol. You could just be a Hooligan.  |
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Post by neilmud Lord Protector on Jul 22, 2014 15:52:39 GMT
I,m a FB too but I used to get between 40&50 to the gallon or about 200 to the tank & I thought that I gave it some stick at the time but as it was my first "modern" road bike so maybe not as much as I would now
;D
Neil
sent while away from my compurer
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Post by kirriepete on Jul 22, 2014 17:44:27 GMT
OK, air filter is fine, so looks like I'll be putting the posh petrol in next fillup, maybe even try a dollop of seafoam in the tank, see if that cleans anything out .....
Will report back once I see what happens, watch this space.
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Post by showaddydadito on Jul 23, 2014 7:28:44 GMT
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Post by Deleted on Jul 23, 2014 8:59:51 GMT
Good advice but seafoam does what redex does but better. It's also dearer. Used redex on the Bandit occasionally, when the carbs decided not to play after being laid up for a couple of weeks. |
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Post by megah0 on Jul 26, 2014 19:51:16 GMT
I get 48-52mpg without trying particularly hard on my D9
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Post by amorti on Jul 27, 2014 20:40:46 GMT
What it says up there - best I've managed so far on the D9 is 35 with a very gentle right wrist. The carbs are well balanced, purrs smoothly at tickover, doesn't appear to be running rich (plugs are a good colour), brakes aren't binding, so do I just accept it's a thirsty bugger or is there something I can tweak? Saying all that, I have noticed every now and then the revs stay a little high when shutting the throttle/changing gear - cable's not sticky and the butterflies look fine, please don't tell me I have to strip the carbs down coz I feckin' hate doing all that fiddly stuff with tiny jets and so forth ..... Sounds a bit like an air leak. The d6 is a bastard for hardened intake rubbers - is the d9 just as bad? |
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Post by kirriepete on Jul 28, 2014 14:33:06 GMT
What it says up there - best I've managed so far on the D9 is 35 with a very gentle right wrist. The carbs are well balanced, purrs smoothly at tickover, doesn't appear to be running rich (plugs are a good colour), brakes aren't binding, so do I just accept it's a thirsty bugger or is there something I can tweak? Saying all that, I have noticed every now and then the revs stay a little high when shutting the throttle/changing gear - cable's not sticky and the butterflies look fine, please don't tell me I have to strip the carbs down coz I feckin' hate doing all that fiddly stuff with tiny jets and so forth ..... Sounds a bit like an air leak. The d6 is a bastard for hardened intake rubbers - is the d9 just as bad? Nah, found out what that is .... throttle cable must've been frayed somewhere in the middle, cos the bugger's snapped! |
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Post by amorti on Jul 28, 2014 18:41:17 GMT
Sounds a bit like an air leak. The d6 is a bastard for hardened intake rubbers - is the d9 just as bad? Nah, found out what that is .... throttle cable must've been frayed somewhere in the middle, cos the bugger's snapped! It's annoying, but at least now it diagnosed itself and is easy enough to fix. I don't see how it would get you as low as 32mpg though... |
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Post by kirriepete on Jul 28, 2014 21:59:19 GMT
Nah, found out what that is .... throttle cable must've been frayed somewhere in the middle, cos the bugger's snapped! It's annoying, but at least now it diagnosed itself and is easy enough to fix. I don't see how it would get you as low as 32mpg though... I'm hoping that was a red herring and the low mpg's will be sorted by flushing the carbs with Redex/Seafoam/posh petrol or a combination thereof ...... |
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Post by CD on Jul 31, 2014 6:59:53 GMT
Check the choke plungers are all closing fully.
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Post by crickleymal on Jul 31, 2014 9:18:56 GMT
It's annoying, but at least now it diagnosed itself and is easy enough to fix. I don't see how it would get you as low as 32mpg though... I'm hoping that was a red herring and the low mpg's will be sorted by flushing the carbs with Redex/Seafoam/posh petrol or a combination thereof ...... I can't for the life of me see why a worn throttle cable would give you low mpg. |
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Post by Deleted on Jul 31, 2014 10:43:59 GMT
I'm hoping that was a red herring and the low mpg's will be sorted by flushing the carbs with Redex/Seafoam/posh petrol or a combination thereof ...... I can't for the life of me see why a worn throttle cable would give you low mpg. It might increase your idle revs. revs between gear changes. |
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Post by crickleymal on Jul 31, 2014 12:26:45 GMT
How slowly do you change gear then?  If the idle revs took up more than 10% of the time then I'd agree but as the time spent idling is probably only a few tenths of one percent then no. |
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Post by kirriepete on Jul 31, 2014 16:42:13 GMT
I'm hoping that was a red herring and the low mpg's will be sorted by flushing the carbs with Redex/Seafoam/posh petrol or a combination thereof ...... I can't for the life of me see why a worn throttle cable would give you low mpg. It wouldn't, although it was the reason the revs stayed up at times. Cables now replaced with smooth running ones, the last half tank of cheap unleaded had a dollop of Redex chucked into it and then yesterday I dropped 3 gallons of posh petrol (Shell V-Power) into the tank. Let's just run that lot through and see what comes of it ..... |
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Post by CD on Aug 3, 2014 14:28:25 GMT
Presumably the chokes are ok
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Post by crickleymal on Aug 3, 2014 20:21:16 GMT
A good point
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Post by kirriepete on Aug 4, 2014 16:56:58 GMT
Well, I've run a tankful of V-Power through it and got 140 miles before the low fuel light came on, that's an improvement of 20 miles already, maybe more to come? Let's see what BP Ultimate can do .....
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Post by Deleted on Aug 5, 2014 7:38:18 GMT
Well, I've run a tankful of V-Power through it and got 140 miles before the low fuel light came on, that's an improvement of 20 miles already, maybe more to come? Let's see what BP Ultimate can do .....  Mine recovered eventually. Though with my fat ass on it I rarely got much more than 160 before the light anyway. So, this proves my theory. We've now have 2 divvies with a penchant for posh petrol. And they said it would/should never work.  |
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Post by gsteinert on Aug 5, 2014 10:00:01 GMT
My divvy was the same. Can't remember the figures exactly but the saving meant that it was cheaper per mile to fill up with VPower than the normal shell stuff.
Gary
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Post by CD on Aug 9, 2014 16:30:54 GMT
My 600 & 900 showed absolutely feck all difference in mpg on VPower or plain ordinary 95-RON. Newer bikes are better on posh petrol, but the Divvies have no knock sensor so can't advance the sparks to benefit from posh petrol.
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Post by Deleted on Aug 11, 2014 10:50:38 GMT
My 600 & 900 showed absolutely feck all difference in mpg on VPower or plain ordinary 95-RON. Newer bikes are better on posh petrol, but the Divvies have no knock sensor so can't advance the sparks to benefit from posh petrol. And yet several have stated it worked for us. |
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Post by m40man on Aug 11, 2014 13:33:23 GMT
And yet several have stated it worked for us. Several? Or few? I've never noticed any improvement, from one petrol to another, on any of my bikes when I've been forced to use posh petrol. Just got the same expected mileage to a tank. We need Billywhizz to come along with his notebook in hand . |
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Post by Deleted on Aug 11, 2014 15:29:55 GMT
And yet several have stated it worked for us. Several? Or few? I've never noticed any improvement, from one petrol to another, on any of my bikes when I've been forced to use posh petrol. Just got the same expected mileage to a tank. We need Billywhizz to come along with his notebook in hand . He would also need a divvy which mysteriously developed the low mpg. I guess 3 of us are several. several
/ˈsɛv(ə)r(ə)l/ determiner & pronoun determiner: several; pronoun: several 1. more than two but not many. |
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Post by m40man on Aug 11, 2014 17:18:31 GMT
I guess 3 of us are several. several
/ˈsɛv(ə)r(ə)l/ determiner & pronoun determiner: several; pronoun: several 1. more than two but not many. Is one of your several Gary? He rides a Fazer 600. Also, I'm pretty sure Billywhizz has voluminous scribblings of mileages from his D6 days. I think a couple of you believe you got more miles per gallon on posh petrol. For one of you it coincided with replacing a sticking throttle cable & running some Redex through . You're the other one . |
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Post by Deleted on Aug 11, 2014 19:12:21 GMT
I guess 3 of us are several. several
/ˈsɛv(ə)r(ə)l/ determiner & pronoun determiner: several; pronoun: several 1. more than two but not many. Is one of your several Gary? He rides a Fazer 600. Also, I'm pretty sure Billywhizz has voluminous scribblings of mileages from his D6 days. I think a couple of you believe you got more miles per gallon on posh petrol. For one of you it coincided with replacing a sticking throttle cable & running some Redex through . You're the other one . Yes. He may ride Fazer but he did say it was on his D9. Seems we're back to 3. |
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Post by m40man on Aug 12, 2014 5:40:40 GMT
Yes. He may ride Fazer but he did say it was on his D9. Seems we're back to 3. He's not had a D9. Nor claimed to have had one  . Back to two - at least one of which used Redex. |
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Post by Deleted on Aug 12, 2014 6:17:15 GMT
Yes. He may ride Fazer but he did say it was on his D9. Seems we're back to 3. He's not had a D9. Nor claimed to have had one . Back to two - at least one of which used Redex. Must be my mistake, since we were talking about D9's I assumed (yes I know  ) that it was a D9. And both of us used Redex. However mine took several fills afterwards to return to normal consumption. My divvy was the same. Can't remember the figures exactly but the saving meant that it was cheaper per mile to fill up with VPower than the normal shell stuff. Gary |
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If the idle revs took up more than 10% of the time then I'd agree but as the time spent idling is probably only a few tenths of one percent then no.
. Back to two - at least one of which used Redex. 
) that it was a D9.