Author Topic: V85 idea  (Read 602 times)

Offline rudyr

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V85 idea
« on: October 18, 2021, 09:17:57 PM »
Alright I had my V85 about 3 months 9000 miles. about 50 mile ago I thought I got water in my fuel, it was hard to start wouldnít stay running had to restart it.  Now runners pretty good but not right, just ideal right from 1100 to 1500 rpm hot or cold.  At40 mph it seams like it engine is surging. Put fresh (92 oct.) gas + some sea foam, then took to freeway 85 mph( everyone passed me) run really good.  Just starting seams like it cold all the time and the 30 to 40 mph rang just doesnít seam right.  I think I need to ride it to the dealer(250 miles) and get him to put the computer on it.  I thinking I want to ride to Tn. to ralley next month but donít want to sit on the side of road. Dose any on have a ideal whatís wrong?Rudy

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Re: V85 idea
« Reply #1 on: October 18, 2021, 09:41:22 PM »
Curious if it might be an O2 sensor. If they water gets into one, they can cause unexpected surging or sputtering. Have you checked your plugs recently?
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Online Huzo

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Re: V85 idea
« Reply #2 on: October 18, 2021, 10:50:03 PM »
What does Guzzidiag say..?
Has the 7SM thrown any codes ?

Offline rudyr

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Re: V85 idea
« Reply #3 on: October 19, 2021, 05:45:39 AM »
About a week ago I got check engine lite on a short ride.  When I stared it again no lite.  No I have not check plugís.Rudy

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Re: V85 idea
« Reply #3 on: October 19, 2021, 05:45:39 AM »

Offline rudyr

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Re: V85 idea
« Reply #4 on: October 19, 2021, 09:09:29 PM »
I called Don in OK. city, he said adjust the values.  That what I will tomorrow.  Will go from their.Rudy

Offline kidsmoke

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Re: V85 idea
« Reply #5 on: October 20, 2021, 09:57:34 AM »
Alright I had my V85 about 3 months 9000 miles.

 :bow:

good luck with your troubleshooting. Glad to see the mileage piling up!
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Online Kiwi Dave

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Re: V85 idea
« Reply #6 on: October 20, 2021, 04:13:16 PM »
Alright I had my V85 about 3 months 9000 miles. about 50 mile ago I thought I got water in my fuel, it was hard to start wouldnít stay running had to restart it.

This is a bit left field, but I had a similar problem with a Breva 1100.  Turned out the drain in the top of the tank under the fuel cap was blocked.  When I washed the bike (this was in Southern California where it never rains  :grin:) I found water was getting past the cap and accumulating under the cap eventually getting into the fuel tank and creating the misfiring.

The drain was completely blocked, I used a short piece of speedo drive cable on the end of an electric drill to clear it.  Never happened again.
« Last Edit: October 20, 2021, 04:13:58 PM by Kiwi Dave »

Offline rudyr

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Re: V85 idea
« Reply #7 on: October 20, 2021, 06:14:55 PM »
Tomorrow I will try gas cap. Adjuster the values intake .005mm /.01 mm exhaust, didnít see much difference.  Called, will haul next week.  wished I could ride but could be fuel pump or injector, canít trouble shot over phone.Rudy

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Re: V85 idea
« Reply #8 on: October 20, 2021, 07:14:31 PM »
This is a bit left field, but I had a similar problem with a Breva 1100.  Turned out the drain in the top of the tank under the fuel cap was blocked.  When I washed the bike (this was in Southern California where it never rains  :grin:) I found water was getting past the cap and accumulating under the cap eventually getting into the fuel tank and creating the misfiring.

The drain was completely blocked, I used a short piece of speedo drive cable on the end of an electric drill to clear it.  Never happened again.
That makes good sense KD and Iíve had it myself.
The thing I find perplexing though, is how the water gets past the conical seal on the cap. When I open the cap on my Ď85, I get a short hissing sound as the pressure equalises...
But irregardless (sic), I hope Rudy finds your suggestion successful.

Offline Bulldog9

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Re: V85 idea
« Reply #9 on: October 20, 2021, 08:27:11 PM »
Tomorrow I will try gas cap. Adjuster the values intake .005mm /.01 mm exhaust, didnít see much difference.  Called, will haul next week.  wished I could ride but could be fuel pump or injector, canít trouble shot over phone.Rudy

I don't have a V85, but are the the recommended valve adjustments really .005 and .01 mm?  Most of the modern Guzzi's I've seen are .10 & .15mm.

I wouldnt think it was the vent/drain if it happens consistently. Perhaps if it happens after a long ride, or while out in the sun, etc where venting would be required. When you open the cap, do you hear air sucking or pushing out? If it were this, the symptom would go away until enough time would pass to develop a vaccum or pressure.

I'd bet that unless you have a loose vacuum line the issue is probably 02 sensor.
« Last Edit: October 22, 2021, 05:35:58 AM by Bulldog9 »
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Online Chethro

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Re: V85 idea
« Reply #10 on: October 21, 2021, 08:57:19 AM »
BD is correct.





This is where I have adjusted mine...
« Last Edit: October 21, 2021, 08:57:43 AM by Chethro »
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Offline rudyr

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Re: V85 idea
« Reply #11 on: October 22, 2021, 10:17:40 AM »
I only had two beers before I made the post on my V85 value adjustment.  What I did and what I posted was wrong.  Just came in from rechecking my value.  I knew something wasenít right when I pulled my feeler garage out and the .10 & .15 mm had been used lately.  But it was good to recheck everything.  One readjusted,  One more time and I will be a expert.  And I did try a lose gas cap, no help.  Rudy

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