Float Level Paso 750

discussions specific to the 750 Paso

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pasoalf
Posts: 72
Joined: Tue Feb 03, 2009 9:44 pm
model: 750 Paso
year: 1987
Location: Switzerland

Float Level Paso 750

Post by pasoalf »

I did some work on my paso 906, and also checked the float level which should be 42mm
I recently had some troubles starting my paso 750 (started, and then died, seemed to get not enough gasoline), and it also was not running how it did in the past. Checking the float level, i realized that is was approx. 46mm. I changed it to 42, and the bike started perfect! It seems also to run better than before.
I was now investigating about the float level of the 750, and i found that the float level is different (45mm) from the 906 (42mm). But it really seems to work better on my 750 (wich is basically a 780; -> 90 bore) . Has anybody experienced the same, or changed float level on the 750 too??
regards pasoalf
Paso 750/ 1987
Paso 906/ 1992
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higgy
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Re: Float Level Paso 750

Post by higgy »

there are many variations of the DCNF Weber that found their way onto the Paso. It is not an easy thing to compare one to the next as they came from different factories and even two of the same series could have been equipped with different jet sizes. As a general rule of thumb those on the 750 came with smaller choke sizes than those of the 906. The other simple truth is most Pasos with Weber ran just fine till modifications to the airbox or the exhaust came along
Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
pasoalf
Posts: 72
Joined: Tue Feb 03, 2009 9:44 pm
model: 750 Paso
year: 1987
Location: Switzerland

Re: Float Level Paso 750

Post by pasoalf »

With the change to the 90 bore kit I've put also an open K@N filter an GIAGAMOTO pipes. AT that time my mechanic (wich is now retired) changed the setting of the weber. At that time it runned well (that was 20 years ago). in the last two years the starting problem appeared, and i had the impression, that the engine was running poor (not enough gasoline). I just wonder what impact the float level has. It seems, that the change from 46 to 42 solved the problem....
Paso 750/ 1987
Paso 906/ 1992
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paso750
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Re: Float Level Paso 750

Post by paso750 »

there are many variations of the DCNF Weber that found their way onto the Paso. It is not an easy thing to compare one to the next as they came from different factories and even two of the same series could have been equipped with different jet sizes.
I just had a look at Ian Falloon`s book. It says:
P750 - 44DCNF 107
P906 - 44DCNF 113
750S - 44DCNF 116
900SS - 44DCNF 118

The one on my P750 is a 44DCNF 110 and it`s for sure the one that originally came with the bike.
No idea what the number describes or where the differences are (maybe the size and number of the progression holes). It can`t be the jetting as according to Falloon the jetting of the P750`s 44DCNF 107 pre and post 7/15/87 was different.
At that time it runned well (that was 20 years ago). in the last two years the starting problem appeared
I doubt the lever of the floater bent by itself over the years meaning that imo even if your modification improved things it didn`t fix the real source of the problem.
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Re: Float Level Paso 750

Post by higgy »

I doubt the lever of the floater bent by itself over the years meaning that imo even if your modification improved things it didn`t fix the real source of the problem.

you would be wrong in that assumption G on the float level changing on its own over time. Gravity and the constant heating and cooling over the years can in fact change the angle of the dangle( so to speak) Not to mention all floats, metal,plastic and foam will over the course of time fill with gas if left sitting in it making them heavier and changing the float level even without the float arm bending from the increase in weight,decrease in bouyancy and the effects of time.
Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
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