Today's Message Index:
----------------------
1. 06:21 AM - Re: Re: RV4-List Digest: 1 Msgs - 10/19/03 (rob ray)
2. 07:30 AM - Re: Re: RV4-List Digest: 1 Msgs - 10/19/03 (Steve Mullins)
3. 08:13 AM - Re: Re: RV4-List Digest: 1 Msgs - 10/19/03 (rob ray)
Message 1
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: RE: RV4-List Digest: 1 Msgs - 10/19/03 |
--> RV4-List message posted by: rob ray <smokyray@yahoo.com>
Ross, next time the you try it (at a safe altitude) turn on the boost pump and
see what the pressure does. I agree that it could be a vent or line problem as
well. One easy way to tell would be to switch tanks, 100LL in the suspect, MoGas
in the other...I am well past 1000 hours of MoGas use with not one complaint
except the smell...
RR
Ross Scroggs <rscroggs@comcast.net> wrote:
--> RV4-List message posted by: "Ross Scroggs"
Steve,
Is it possible that the tank with the auto fuel has it's fuel tank vent
partially plugged? That
could be the reason for the drop in fuel pressure. In flight, while running
on auto fuel, watch for
any change in the appearance of the tank skins compared to the tank with
100LL. The auto
fuel tank may be getting sucked in which may be visible.
Do you have sloshing compound in your tanks? If so, it could be
releasing and plugging up
the tank pickup.
Good luck,
Ross Scroggs
RV-4-#3911 Wings
----- Original Message -----
From: "Steve Mullins"
Subject: RV4-List: RE: RV4-List Digest: 1 Msgs - 10/19/03
> --> RV4-List message posted by: "Steve Mullins"
>
> Hello all,
>
> I am in desperate need of advice. I have been running auto fuel in my
0-290
> powered 4 for three years with no problems until recently. Fuel pressure
> starts to fluctuate and drop once temps come up. I switch back to avgas
tank
> and things return to normal. Is this likely vapor lock? Are there other
auto
> gas issues I need to be aware of? Prior to this recent development, the
> engine runs just as good with either fuel.
>
>
---------------------------------
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | RE: RV4-List Digest: 1 Msgs - 10/19/03 |
--> RV4-List message posted by: "Steve Mullins" <smullins@drury.edu>
I have tried the boost pump, and it brings the pressure back up, but it
still fluctuates much more than when on the avgas tank. So does this tell me
it is vaporlock?
I am leaning toward the vapor lock explanation cause it has been unusually
warm here, and I have been told that the gas companies switched to their
'winter blend' at the beginning of October.
Wahtcha think?
-----Original Message-----
From: owner-rv4-list-server@matronics.com
[mailto:owner-rv4-list-server@matronics.com] On Behalf Of rob ray
Subject: Re: RV4-List: RE: RV4-List Digest: 1 Msgs - 10/19/03
--> RV4-List message posted by: rob ray <smokyray@yahoo.com>
Ross, next time the you try it (at a safe altitude) turn on the boost pump
and see what the pressure does. I agree that it could be a vent or line
problem as well. One easy way to tell would be to switch tanks, 100LL in the
suspect, MoGas in the other...I am well past 1000 hours of MoGas use with
not one complaint except the smell...
RR
Ross Scroggs <rscroggs@comcast.net> wrote:
--> RV4-List message posted by: "Ross Scroggs"
Steve,
Is it possible that the tank with the auto fuel has it's fuel tank vent
partially plugged? That
could be the reason for the drop in fuel pressure. In flight, while running
on auto fuel, watch for
any change in the appearance of the tank skins compared to the tank with
100LL. The auto
fuel tank may be getting sucked in which may be visible.
Do you have sloshing compound in your tanks? If so, it could be
releasing and plugging up
the tank pickup.
Good luck,
Ross Scroggs
RV-4-#3911 Wings
----- Original Message -----
From: "Steve Mullins"
Subject: RV4-List: RE: RV4-List Digest: 1 Msgs - 10/19/03
> --> RV4-List message posted by: "Steve Mullins"
>
> Hello all,
>
> I am in desperate need of advice. I have been running auto fuel in my
0-290
> powered 4 for three years with no problems until recently. Fuel pressure
> starts to fluctuate and drop once temps come up. I switch back to avgas
tank
> and things return to normal. Is this likely vapor lock? Are there other
auto
> gas issues I need to be aware of? Prior to this recent development, the
> engine runs just as good with either fuel.
>
>
---------------------------------
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | RE: RV4-List Digest: 1 Msgs - 10/19/03 |
--> RV4-List message posted by: rob ray <smokyray@yahoo.com>
Probably a good call on vaporlock. Try mixing the MoGas 50/50 with 100LL and see
what happens. If the problem disappears, it was a strong possibility it was
Vapor lock. I run a 75/25 (auto/av) mix now with good results. I asked my Amoco
station guy here in AL and he said they don't go to a winter blend until January-Feb.
RR
Steve Mullins <smullins@drury.edu> wrote:
--> RV4-List message posted by: "Steve Mullins"
I have tried the boost pump, and it brings the pressure back up, but it
still fluctuates much more than when on the avgas tank. So does this tell me
it is vaporlock?
I am leaning toward the vapor lock explanation cause it has been unusually
warm here, and I have been told that the gas companies switched to their
'winter blend' at the beginning of October.
Wahtcha think?
-----Original Message-----
From: owner-rv4-list-server@matronics.com
[mailto:owner-rv4-list-server@matronics.com] On Behalf Of rob ray
Subject: Re: RV4-List: RE: RV4-List Digest: 1 Msgs - 10/19/03
--> RV4-List message posted by: rob ray
Ross, next time the you try it (at a safe altitude) turn on the boost pump
and see what the pressure does. I agree that it could be a vent or line
problem as well. One easy way to tell would be to switch tanks, 100LL in the
suspect, MoGas in the other...I am well past 1000 hours of MoGas use with
not one complaint except the smell...
RR
Ross Scroggs wrote:
--> RV4-List message posted by: "Ross Scroggs"
Steve,
Is it possible that the tank with the auto fuel has it's fuel tank vent
partially plugged? That
could be the reason for the drop in fuel pressure. In flight, while running
on auto fuel, watch for
any change in the appearance of the tank skins compared to the tank with
100LL. The auto
fuel tank may be getting sucked in which may be visible.
Do you have sloshing compound in your tanks? If so, it could be
releasing and plugging up
the tank pickup.
Good luck,
Ross Scroggs
RV-4-#3911 Wings
----- Original Message -----
From: "Steve Mullins"
Subject: RV4-List: RE: RV4-List Digest: 1 Msgs - 10/19/03
> --> RV4-List message posted by: "Steve Mullins"
>
> Hello all,
>
> I am in desperate need of advice. I have been running auto fuel in my
0-290
> powered 4 for three years with no problems until recently. Fuel pressure
> starts to fluctuate and drop once temps come up. I switch back to avgas
tank
> and things return to normal. Is this likely vapor lock? Are there other
auto
> gas issues I need to be aware of? Prior to this recent development, the
> engine runs just as good with either fuel.
>
>
---------------------------------
---------------------------------
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|