Float level

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Dode
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Float level

Post by Dode » Sun Apr 29, 2018 9:30 am

Hi Folks,
Can anyone clear up the confusion about float level please?. The manual says 24mm, Dellorto say 18mm. Mine was flooding when I got it, float level was way out, so I set it to 24mm, no more flooding. It idles fine now, won't know what it rides like until I have it registered here. But, there's always a "but" isn't there?, it needs choke to fire up, even when at running temperature, this indicates a fuel level that's too low to me, should it be 18mm height?.
It's a PHF36PS
Thanks,
Alan

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Joachim
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Re: Float level

Post by Joachim » Sun Apr 29, 2018 7:24 pm

what level did you had when the carb flooded?
Less than 18mm?
Maybe you will have to try the 18mm
Beside this it's the function of a choke to give help while starting a cold engine.
And even 20deg plus is cold from the sight of an engine :)
So i think *always* using the choke is ok.

ciao Joachim
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garagien
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Re: Float level

Post by garagien » Mon Apr 30, 2018 6:22 pm

Dear Alan,
PHF 36 means we are talking about a 350 cc engine. If carb is correct adjustet you do not need the choke when engine is cold and ambient is above 18 °C (even in Germany). Pump 2-3 time with acceleration pump and engine will start. Idle jet in 58 as per manual, seems to me wrong, seems too big. But in Germany we do not have any experiance with 350 cc engines. So it´s just a guess compared with the 53 for the 40 mm Dellos.
When engine is warm you absolutely do not need the choke.
If your carb will flood (thats to my German translation understanding) has nothing to do with float adjustment. Your float switch must be untight. For normal road use keep float level between 18-20 mm.
But I assume there is another thing wrong in your carb. Did you checked?
Regards,
HP

Dode
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Re: Float level

Post by Dode » Mon Apr 30, 2018 7:16 pm

Hi folks,
When I got the bike (a 350), it had been flooding long enough to take the paint off the engine. Stripping the carb revealed the float had been bent up so much it was touching the carb body and the needle valve wasn't even seating!, so the float chamber was filling all the time. I set the level to the manual, 22 to 24mm, I'll re set it to 18mm and see how it runs.The carb is in good condition, and nicely clean.
My Morini has a flat spot caused by new type ethenol fuels, this is helped by increasing the pilot jet size, I'll see how the Saturno runs before I change anything I think.
Thanks for the answers.
Alan

garagien
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Re: Float level

Post by garagien » Tue May 01, 2018 3:29 am

OK, understood. You are on the right way. Another question: Is your acceleration pump working? In the past two years we had several problems due to aged membrane material getting porous. If you look against a spot light surface of membrane must be tight. If you see any light you should change. Contact your next Guzzi dealer (LeMans and others have same membrane) or your Dello source.
Please mind the ethenol fuel, you get damages on the material of the jets during longer stand-stills. Use high octane fuel without ethenol (SuperPlus). It´s better for your bike. You will not invite your better half for lunch to Burger King, arent´t you giggle
HP

Dode
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Re: Float level

Post by Dode » Wed May 02, 2018 12:55 pm

Hi HP,
I re set the float height to 18mm, it seems to start better, but as I said, I'll have to wait until I ride it. The accelerator pump is working.
I use super unleaded in my older bikes, it doesn't cost any extra, I get a better fuel consumption when using it!.
Thanks,
Alan.

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