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V7 Classic, unreliable idle.

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Cylvabirch View Drop Down
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    Posted: 21 Mar 2016 at 17:38
My V7 Classic is not dependable regarding idling, engine cold or hot.
It will often just stumble to a stall, but at other times idles nicely at about 1000 rpm. The TPS and software has been set and updated by Paul at Corsa and no error codes show up.
If I just move the starting "choke" lever even a very tiny amount the problem disappears, so I think it would be solved by quickening up the slow running speed by about 50 rpm. Paul said it is OK to do as it is not a real choke but only a throttle movement device. Is it possible to do this properly by adjusting something?
All the best,
David.
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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2016 at 17:48
Thing is once it is hot is it all good? if so would it then idle too quick once hot? Had similar on my V11 Le Mans , I found by a tiny tweak on the  throttle  adjuster , which on the V11 was a round knob on the left of the bike all it did was take up slack , did the job a wee bit too much and the idle when hot was too high , BUT Paul really does know his stuff far better than I 
The Older i Get, The Better I Was
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Cylvabirch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cylvabirch Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2016 at 18:09
Hi Ken, if anything it is worse when hot than when cold. It makes riding it a bit nerve-wracking as I have to concentrate on keeping it going when I ought to be thinking about positioning, speed, gear etc. I have tried changing plugs but no real difference. I thought that with modern bikes there was no need to keep blipping the throttle as in the days of yore!
David.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2016 at 18:30
This has come up before...

http://www.guzziriders.org/new-bikedies-on-idle_topic3843.html?KW=won%27%27t+idle


... which as yet is still unresolved... so we still don't know what's going on





"Chicken nuggets don't dance on a Tuesday."
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Cylvabirch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cylvabirch Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2016 at 19:05
I know Mike but did not want to confuse matters by introducing my problem into the same thread. There may also be a cross-linkage with stuff about the Finebau Forge device.
All the best,
David
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Post Options Post Options   Thanks (0) Thanks(0)   Quote theoneandonly Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2016 at 11:07
Paul at corsa , and i did the fuel injection course on the same day . get him to fix it . that is what you paid him for . 
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Cylvabirch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cylvabirch Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2016 at 11:38
Dear Baldrick,
So it is soluble by adjusting something? Can this only be done via the PADS device?
Thanks for your input!
David.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2016 at 19:09
Originally posted by Cylvabirch Cylvabirch wrote:

I know Mike but did not want to confuse matters by introducing my problem into the same thread. There may also be a cross-linkage with stuff about the Finebau Forge device.
All the best,
David


Sorry wasn't implying it should be, just saying there's at least one other case of very similar prob.


I am idly considering that my next Guzzi should be one of the 'new' V7's so I have more than a passing interest in the issues that can affect them.


"Chicken nuggets don't dance on a Tuesday."
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Cylvabirch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cylvabirch Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2016 at 18:38
Still living in hope someone will come through with a solution!
David.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cylvabirch Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2016 at 14:14
I had a good old go at the V7 this morning. Not having software hook-ups etc it was limited to spanner and screw driver stuff.
I found the valve clearances were rather loose and not correctly set as per Moto Guzzi specification. They are now dead on at 4 thou inlet and 6 thou exhaust ( 0.1 mm and 0.15 mm for the metric amongst us) stone cold. I re-gapped the plugs and put them in to the correct torque value.
Now for the discovery bit! Because I am stupid I had not realised there is a means of adjusting the idle revs staring me in the face. Beneath the cold start lever there is a simple turn-buckle adjuster for the cable tcovered by a rubber boot that allows a very fine adjustment to be made of the idle speed. I let everything get up to themperature and, as usual she started to hunt and stumble to a stall. Using the turn buckle I have been able to set the slow running speed at around 1200 and the bike sounds very happy and smooth. The workshop manual says it should be 1100 +/- 100 so I am just inside specification. Trying to set it a bit slower led to the engine hunting and stalling again so I will leave it at this setting for a bit and see how she goes.
David.
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2016 at 16:26
Check that turning the bars from lock to lock doesn't affect the idle speed.
Brian.

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Cylvabirch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cylvabirch Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2016 at 16:50
Hi Brian, thanks for the warning. I did check that and all is OK.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BobV7 Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2016 at 17:47
I think what you've done there is increase the tension on the cold start cable (the lever on the clutch side). I don't think it's the way to adjust tick over but if it's working for you....
V7 Classic Black and gold is the best colour
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Cylvabirch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cylvabirch Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2016 at 18:27
It's all a mechanical man like me can do. How is it done properly?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BobV7 Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2016 at 18:40
Not a criticism just an observation and if I knew the answer I wouldn't need a trained mechanic. As others have said, take it back to the dealer to fix or give "theoneandonly" (Baldrick) a shout.
V7 Classic Black and gold is the best colour
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