fuel gauge jumpy

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Max
Posts: 75
Joined: Tue Jul 12, 2005 12:00 am
model: 750 Paso
year: 1988
Location: Los Angeles

fuel gauge jumpy

Post by Max »

My Paso's fuel gauge is very jumpy. I have had this bike since new and don't remeber if it was like this in the begining. Is every one's like that? There is supose to be a balancer or something in the circuit usally. :confused:
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Skins
paso grand pooh-bah
Posts: 1304
Joined: Tue Oct 26, 2004 12:00 am
model: 750 Paso
year: 1988
Location: Kapiti, New Zealand

Post by Skins »

:cool:


I'm not much on electrics. but the mechanical side of it is quite easy. It's easy to take the mechanism out of the tank from underneath. You can see how it works quite clearly. I got mine to read accurately, and the warning light come on at the right time.

You might find the contacts on yours need touching up.
Max
Posts: 75
Joined: Tue Jul 12, 2005 12:00 am
model: 750 Paso
year: 1988
Location: Los Angeles

Post by Max »

Thank you Skins. I will get on it the next time I take the tank off.
pasosardegna

Re: fuel gauge jumpy

Post by pasosardegna »

Max wrote:My Paso's fuel gauge is very jumpy. I have had this bike since new and don't remeber if it was like this in the begining. Is every one's like that? There is supose to be a balancer or something in the circuit usally. :confused:
:confused: :eek:
Marinus

Post by Marinus »

Skins wrote::cool:


I'm not much on electrics. but the mechanical side of it is quite easy. It's easy to take the mechanism out of the tank from underneath. You can see how it works quite clearly. I got mine to read accurately, and the warning light come on at the right time.

You might find the contacts on yours need touching up.
[/color

MIne has the same problem. Shows empty at when its only used 12 litres. Skins, was the problem on yours only mechanical?
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Finnpaso
paso grand pooh-bah
Posts: 3091
Joined: Mon Jul 26, 2004 12:00 am
year: 0
Location: Finland

Post by Finnpaso »

Skins know, what to do to things to get it accurate, but i haven seen/hear anybody, who have managed to get that "jumpy" away from 750 Paso meter :roll: It can be, that heavier floater can balance little. Does anybody know, why there is going 3 wires inside fuel meter in dash? Need "fuel meter specialist" now :confused: I have tried long time ago connect big electrolyte capacitor between meter input and earth, but that didnt help to "jumpy"..... there have been dicussion about this long time ago, here, or in mailing list.... Btw, 907IE have very stable fuel meter compared to 750 Paso :confused: "REFINED BIKE"(907IE),like have told earlier many times :cool:
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Skins
paso grand pooh-bah
Posts: 1304
Joined: Tue Oct 26, 2004 12:00 am
model: 750 Paso
year: 1988
Location: Kapiti, New Zealand

Post by Skins »

:cool:


if i remember correctly, two wires go to the gauge and one goes to earth. i'll check the wiring diagram later to confirm.

yes, the problem was basically mechanical, but getting the low fuel warning light to come on at the right time meant adjusting the contacts for the light to make contact at the right time.

to make the fuel level reading accurate and steady, i made a heavier float, and changed the angle and length of the float arm by bending. The longer you make the arm, the steadier will be the reading the reading. But there are some baffles in that area of the tank that you have to work around. It takes time to get the best result, just as it does with my 'Ducati Cuddle' DellOrto synchronizing and idle-setting technique, but it can be done. You have to take the whole filler cap assembly off so you can get your hand in there.
Marinus

Post by Marinus »

So Skins as you may have gathered I bought the bike. I rode it 1100km home from CHCH on the weekend. I fought with it for the first leg up to Kiakora. Well really I fought with it most of the way home. At slow speed it wants to fall into corners so bad I found myself locking my inside elbow. And at high speed it gets a wobble. I could go on and on but although the tires had a reasonable amount of grip on them I figured they must be at least 4 years old. By the time I got home, the back was bouncing around the corners. I pulled her out of the shed to wash her yesterday morning and the back tire was flat and had worn really quickly after about Toupo. So I’ll get new rubber under her. She is running the Michelins and I have been through the site to look for alternatives. What do you run on yours?
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Skins
paso grand pooh-bah
Posts: 1304
Joined: Tue Oct 26, 2004 12:00 am
model: 750 Paso
year: 1988
Location: Kapiti, New Zealand

Post by Skins »

:cool:

there is no alternative, i'm afraid. or at least no easy one. you will find material on the site about this problem, which is the most awkward Paso problem. I suggest you put new tyres on her and make contact with Paso owners up there and see if they can advise you about the handling. They do have extremely light steering compared to every other bike I've ridden, but that's something I love about them. It is delightful once you're used to it, assuming there is no other handling problem, eg loose steering head breaings, etc. you can slow the steering by backing off the rear suspension, and having the rear axle in the high position in the swing arm, br rotating it in the eccentrics.
Gwenadu

Post by Gwenadu »

I figured they must be at least 4 years old. By the time I got home, the back was bouncing around the corners. I pulled her out of the shed to wash her yesterday morning and the back tire was flat and had worn really quickly after about Toupo. So I’ll get new rubber under her. She is running the Michelins and I have been through the site to look for alternatives. What do you run on yours?
_________________
have you check-up the pressure of your tyres? It is surprising how a little low pressure(~2bars) makes the Paso heavy to drive...
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Paul
Posts: 187
Joined: Fri Jul 16, 2004 12:00 am
model: 750 Paso
year: 1987
Location: Hartbeespoort Dam, South Africa

Post by Paul »

Marinus,

I had a similar problem to you. This was my first Ducati and I was expecting the legendary Ducati handling. It handled like a pig and would just drop in to corners. I got to the point where I thought it was me. I was lent a Buell Lightning at a track and within two laps I was leaning this over further than I had ever dared with the Paso.

I continued to use the tyres that it came with as replacements were unobtainable then. I did have a spare set that were given to me with the bike, but it seemed wasteful to use these up.

"Fortunately" I snapped off the front tyre valve when inflating the tyre. As I had to take the wheel in to a tyre shop to get the valve replaced I decided to have the other tyres fitted at the same time. This was the best decision I have made as it completely transformed the handling of the bike.

Before looking at items like the head bearings etc. replace the tyres and have a test ride. You'll probably find that this has cured the problem.

Paul
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Fraser
Posts: 334
Joined: Tue Jan 17, 2006 12:00 am
model: 750 Paso
year: 1986
Location: Lower Hutt, New Zealand

Post by Fraser »

Guys,

I change of mind set is required. Instead of a fuel gauge that is jumpy consider it as being highly accurate. So accurate, that every motion of the fuel in the tank is faithfully replicated by the motion of the needle on the gauge.

My fuel gauge is acutely accurate and I'm happy about it.

Fraser.
Marinus

Post by Marinus »

I put the new tires on and what a transformation. After a few hundred Km’s I was still concerned about the bike running wide when exiting corners. After it was a major contributor to me having a we off I decided to make a priority of sorting out the suspension. I had noticed that the static sag and loaded sag on the front were next to nil so I dismantled the front end and found that there were 32mm spacers in the top of the forks. I removed them and put in new 5w fork oil and that has fixed the problem. I also put a little more preload on the rear to get an even bounce and sag. I have just come back from a 300km ride through a beautiful stretch of winding road in the Coromandel. Now the PASO is handling closer to what it was built to do. It was a magic ride. Great weather, scenery, twisty roads and a setup with which to enjoy it. It was a real buzz!
devildad

Post by devildad »

My fuel gage was flipping out of control. Checked tank sensor, fine, when I went to reassemble I checked all contacts, one on the tank disintegrated. Replaced it and now it works fine.
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