fuel "burping"?

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duetto
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fuel "burping"?

Post by duetto » Mon Nov 26, 2018 2:43 pm

hi all,

when we fill our tanks (esp the rear) i'm constantly worrying about having fuel "erupt" out of the filler hole. it mostly happens when we have to use the large diameter nozzles. i've tried going really, really slow but even this is no guarantee. i assume it is due to air not being able to escape thru the overflow preventer and vent.

i assume others also have this problem. if so has anyone found a fix or a workaround? has anyone had the preventer stick partially shut?
john & diane cummings
duetto mv34 #23

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AMCarter3
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Re: fuel "burping"?

Post by AMCarter3 » Mon Nov 26, 2018 4:43 pm

It's a real challenge for all PDQ owners. We tell our charter guests to do what we do... pump fuel slowly and watch the fuel tank gauge carefully; and STOP filling when the needle is steady on FULL. Do NOT try to completely fill the tank.
Mac Carter
2006 34' PDQ PowerCat "All Heart"; MV 98; twin 100 HP Yanmars
Home Port: Bellingham WA 98229
Member of San Juan Sailing & Yachting charter fleet: http://sanjuansailing.com/charter-detai ... .php?id=35

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thinwater
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Re: fuel "burping"?

Post by thinwater » Mon Nov 26, 2018 9:41 pm

You might try a Clean Way Fuel Funnel. I've used one and it worked pretty well. Yup, that's my PDQ at the fuel dock. They come with a set of addapters, up to some big sizes.

If it works for you, let us know!

http://www.hopkins-carter.com/scclwayfufi.html

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SecondWind
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Re: fuel "burping"?

Post by SecondWind » Tue Nov 27, 2018 6:45 am

The problem lies with the vent hose. We needed to adjust ours so that there was a constant rise toward the vent. Most of them have a dip in the hose, which allows fuel to collect in the dip. It may take several small blocks to elevate portions of the hose to insure a constant rise. You can also place a device in the line which prevents fuel overflow.
Terry Green
s/v Second Wind
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sailkane
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Re: fuel "burping"?

Post by sailkane » Tue Nov 27, 2018 10:31 am

We use the clean way fuel filter and this eliminates the mess with the “burping “ problem.

duetto
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Re: fuel "burping"?

Post by duetto » Tue Nov 27, 2018 11:37 am

what kind of fill rate with the big nozzle hoses can you use with the filter(i.e. wide open, 1/2, 1/4)?

we actually looked at these about a year ago but decided we didn't need. we're re-thinking the whole problem.

i'm going to trace the vent hose and check for low spots. i can see where if there is fuel trapped in the hose, the pressure will force it up the hose to the overflow preventer which will "close" and force the air/fuel to escape up the fill pipe.
john & diane cummings
duetto mv34 #23

duetto
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Re: fuel "burping"?

Post by duetto » Tue Jan 15, 2019 11:56 am

to those of you who have the funnel.

i bought the funnel kit. included in the package is a tube of permetex dressing. what does that get applied to?
john & diane cummings
duetto mv34 #23

Expatriate
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Re: fuel "burping"?

Post by Expatriate » Mon Feb 11, 2019 7:12 pm

My solution is to fill the forward tank and transfer to the rear. Have had very little burping on the forward tank. Takes some coordination depending on how much fuel I am taking on.

duetto
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Re: fuel "burping"?

Post by duetto » Mon Feb 11, 2019 8:18 pm

expatriate,

i actually like that. we too also have less trouble with the forward tank. the issue is when you need to fill both. i can't sit at the fuel dock pumping front to back....or maybe i can. i haven't thought about it.

on another note, we bought the funnel. we filled both tanks once using the funnel. i would say it's a 95% solution. we had on burp on the back which would have been a disaster w/o the funnel. the missing 5% has to do with the fit of the filler. we're working on that. overall an improvement and i would recommend.
john & diane cummings
duetto mv34 #23

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