Today's Message Index:
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1. 05:18 AM - Re: 914 Intake valve stuck? (Roger Lee)
2. 09:38 AM - Re: Re: 914 Intake valve stuck? (Kitfox George)
3. 04:01 PM - Re: 914 Intake valve stuck? (Roger Lee)
Message 1
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| Subject: | Re: 914 Intake valve stuck? |
How many hours on the engine and do you use 100LL? If it sat a real long time and
oil purge would be a really good idea.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=277290#277290
Message 2
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| Subject: | Re: 914 Intake valve stuck? |
Roger,=0A=0AI have no idea how many hours are on this engine. That is why I
believe the guy I picked the motor up from had the lower end checked and r
eplaced the bearings and put in new piston-rings. He claims he did not to
uch the valves because the appeared okay. I didn't know about the part of n
ot doing the valves until recently. And yes, I would say it has burned 100L
L a good portion of its life. I had sitting in my garage for at least-1 y
ear and yes I did purge the oil system.-During--hand prop to purge th
e system is when I first heard the faint popping and a little resistance.
-It was after two run-ups and then two days of sitting that I went to rot
ate the prop that I found it very difficult to rotate. I should note I-ch
ecked valve clearance after the second warm up and nothing seemed wrong wit
h offending intake valve. As I said I sprayed some LPS-directly to the va
lve stem through the removed intake-pipe and it helped it free it up but
still not
perfect.-What do you think?- Major or put a little lube in the gas for
a while.=0AGeorge=0ASport Model(7+)- Rotax 914- almost, but not yet!=0Ado
not archive =0A=0A=0A=0A=0A________________________________=0AFrom: Roger L
ee <ssadiver1@yahoo.com>=0ATo: rotaxengines-list@matronics.com=0ASent: Sat,
December 12, 2009 5:17:09 AM=0ASubject: RotaxEngines-List: Re: 914 Intake
diver1@yahoo.com>=0A=0AHow many hours on the engine and do you use 100LL? I
f it sat a real long time and oil purge would be a really good idea.=0A=0A-
-------=0ARoger Lee=0ATucson, Az.=0ALight Sport Repairman - Maintenance Rat
ed=0ARotax Repair Center=0A520-574-1080=0A=0A=0A=0A=0ARead this topic onlin
e here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=277290#277290=0A
- - - - - - - - - - - - - - -Matt Dralle, List
Message 3
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| Subject: | Re: 914 Intake valve stuck? |
Some of these 914's have been military surplus. It is what is used in the Predator
aircraft. If I bought a used 914 it would help to get a history on the engine.
If it has had a long life of 100LL then it probably needs a valve job and have
the seats reamed. You can not do a valve job like a car. The valves are armored.
(too hard). Valves need replacement, the seats can be re-worked.
Have you done a compression test. This may tell a more complete story.
All this said this can be hard to diagnose over email.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=277365#277365
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