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RV10-List Digest: 6 Msgs - 06/15/18

 
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deschamps(at)absamail.co.
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PostPosted: Mon Jun 18, 2018 2:17 am    Post subject: RV10-List Digest: 6 Msgs - 06/15/18 Reply with quote

Had the same problem at 9500 ft and above with Andair pump and filter in the
tunnel and an Andair gascolator on the engine side of the firewall.
Removed the gascolator and never had another problem.
My theory is that there are too many restrictions from the fuel tanks to the
mechanical fuel pump for the pump to siphon the fuel over that distance at
altitude.
Before spending any money on expensive replacements I suggest that you
bypass the gascolator on one side and check if this solves your problem at
altitude.
Regards,
Ed Deschamps
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maca2790



Joined: 26 Jan 2011
Posts: 52
Location: Australia

PostPosted: Thu Jun 21, 2018 1:36 am    Post subject: RV10-List Digest: 6 Msgs - 06/15/18 Reply with quote

Here in Australia and I believe also in England and Canada we still require
a Gascolator.
Quote:
From what I have researched on the problem the problem with an Engine driven
pump comes more from Air leaks in the

System that anything else.

In my System the Fuel is taken from the Tank through 3 right angle bends to
the Andair Fuel Valve. Then another
right angle bend out of the Valve. It then passes through an Andair Filter.
Boost pump, Red Cube and then goes through two more
bends to the firewall, one more bend out the other side and to the
Gascolator which is mounted low on the Firewall
The only time I have had fuel pressure issues is when the weather is hot.
(Above 35 C) To get around that I just run the boost pump until
The OAT cools off but then I haven't flown my 10 above 10,000 ft so I don't
know about how the system behaves above that.

So for those that don't live in the USA, you should check with an Person
Authorised to sign for C of As before you pull the
Gascolator out. On my 100 hourly Inspections when I open up the Gascolator I
replace the O' ring.
John
Cheers

John MacCallum
VH-DUU
RV 10 # 41016

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