Today's Message Index:
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1. 12:59 PM - Fuel fumes in the cockpit (Jon Blake)
2. 01:55 PM - Re: Fuel fumes in the cockpit (Frank Stelwagon)
3. 02:02 PM - Re: Fuel fumes in the cockpit (PS)
4. 07:28 PM - Air Systems (woodja51)
5. 07:30 PM - Re: Fuel fumes in the cockpit (Walter Lannon)
Message 1
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| Subject: | Fuel fumes in the cockpit |
Im getting fuel fumes in the cockpit in my stock CJ with stock motor. I dont smell
anything during ground operations or when full throttle ops on take off.
When I get to about 4000 feet and open the throttle all the way I start smelling
gas. When I back off to less than full throttle or about 3/4 throttle the smell
seems to go away. Opening and closing the canopy doesnt seem to have much
effect on the fumes. The fumes arent overwhelming... but they do persist and
seem to be associated with full throttle.
I removed the cowling; washed the engine and then had someone pressurize the fuel
system using the wobble pump while I inspected the engine compartment looking
for leaks... nothing. There was a slight hint of fuel vapors around the bottom
of the carb but nothing too strong and certainly no dripping.
Im open to any suggestions and even guesses at this point.
JB
Sent from my iPad
Message 2
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| Subject: | Re: Fuel fumes in the cockpit |
Pull the belly panels and carefully examine the fuel sump tank for leaks. Water
will migrate to the sump and cause corrosion.
Frank
Sent from my iPhone
> On Aug 12, 2018, at 12:59 PM, Jon Blake <saber369@comcast.net> wrote:
>
>
Message 3
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| Subject: | Re: Fuel fumes in the cockpit |
You may also want to pull the wing root covers and see if the line from the tank
to the fuselage is seeping.
Phil
--------
Phil
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=482334#482334
Message 4
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Hi all , doing a masters project on composite air tanks etc as replacements for
steel OEM . Anyone got any good info on any research already done ?
Im also after some pics I saw a while ago of what happens when someone put oxygen
rather than air /N2 in a Yak I think. PM me or email mwuillemin@mac.com thanks
!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=482337#482337
Message 5
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| Subject: | Re: Fuel fumes in the cockpit |
Jon;
Sounds like possibility of a vent system problem. Check the wing joint
connections as Phil has suggested and check for blockage of the inlet.
The highest point of the system is right beside your left shoulder. A
corrosion pin hole here could be the source.
Walt
-----Original Message-----
From: Jon Blake
Sent: Sunday, August 12, 2018 12:59 PM
Subject: Yak-List: Fuel fumes in the cockpit
Im getting fuel fumes in the cockpit in my stock CJ with stock motor. I dont
smell anything during ground operations or when full throttle ops on take
off. When I get to about 4000 feet and open the throttle all the way I
start smelling gas. When I back off to less than full throttle or about 3/4
throttle the smell seems to go away. Opening and closing the canopy doesnt
seem to have much effect on the fumes. The fumes arent overwhelming... but
they do persist and seem to be associated with full throttle.
I removed the cowling; washed the engine and then had someone pressurize the
fuel system using the wobble pump while I inspected the engine compartment
looking for leaks... nothing. There was a slight hint of fuel vapors around
the bottom of the carb but nothing too strong and certainly no dripping.
Im open to any suggestions and even guesses at this point.
JB
Sent from my iPad
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