Today's Message Index:
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1. 09:30 AM - oil change question (krazydoc33)
2. 09:46 AM - Re: oil change question (Jim Roberts)
3. 10:36 AM - =?utf-8?Q?Re:__oil_change_question? ()
4. 06:52 PM - Re: oil change question (Richard Girard)
Message 1
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| Subject: | oil change question |
I just changed the oil at 19 hours from first start. I was going to change it at
20 hours but had the cowl off so went ahead. Drained the tank after burping
the engine and replaced the filter. After putting 3.25 qts. back in the tank,
which is just a little less than what I drained out, the oil level is above the
dipstick hole. Pulled the prop. through 15-20 revolutions and ran the starter
for 6-7 seconds, ignition off, no oil pressure and level did not go down. Pressurized
the tank, via the oil blow by line, to about 7-8 # with no change. This
did not happen when I first filled the tank with oil. What am I doing wrong?
Is it safe to start and check the oil pressure within 30 seconds?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=421612#421612
Message 2
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| Subject: | Re: oil change question |
If your start switch is also the master you have no power to the senders in
the start mode. Check for pressure just as you release the start mode but
the switch is still on.
Jim
-----Original Message-----
From: krazydoc33
Sent: Sunday, April 06, 2014 11:28 AM
Subject: RotaxEngines-List: oil change question
I just changed the oil at 19 hours from first start. I was going to change
it at 20 hours but had the cowl off so went ahead. Drained the tank after
burping the engine and replaced the filter. After putting 3.25 qts. back in
the tank, which is just a little less than what I drained out, the oil level
is above the dipstick hole. Pulled the prop. through 15-20 revolutions and
ran the starter for 6-7 seconds, ignition off, no oil pressure and level did
not go down. Pressurized the tank, via the oil blow by line, to about 7-8 #
with no change. This did not happen when I first filled the tank with oil.
What am I doing wrong? Is it safe to start and check the oil pressure within
30 seconds?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=421612#421612
Message 3
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| Subject: | Re:_RotaxEngines-List:_oil_change_question? |
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Message 4
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| Subject: | Re: oil change question |
Krazy, NO! If you truly believe you don't have oil pressure it is
definitely NOT safe to start the engine. The 912 does not tolerate no or
low oil pressure and long before that 30 seconds is up your engine will be
toast.
Suggest you pull the top spark plugs from all cylinders and spin the engine
by hand until you hear the engine burp. If you cannot get the engine to
burp and you still believe the engine has no oil pressure, pull the oil
pressure sender and install a mechanical gauge like this:
http://www.summitracing.com/parts/sww-82323/overview/ as a test unit. Yeah,
it will double the price of your oil change but an extra $40 is cheaper by
far than a new engine.
Rick Girard
On Sun, Apr 6, 2014 at 12:28 PM, <pjeffers@talktalk.net> wrote:
> You are probably being a little impatient with your expectations of oil
> pressure in 6 or 7 seconds.
> Are you sure that you did not turn the engine at all, forwards or
> backwards when your oil tank was empty?
> If so you could have got air into the oil system. The oil pump will not
> pump air!!! If you did then you will need to bleed the oil system from
> scratch. See the Rotax manual for procedure.
> I expect you just did not motor the engine long enough. Remove one plug
> from each cylinder and motor for 20 secs or until oil pressure rises. If
> you still don't get px then bleed the oil system.
>
> Regards
> Pete Jeffers
>
> *From:* Jim Roberts <jnjrob@gmail.com>
> *Sent:* Sunday, 6 April 2014 17:44
> *To:* rotaxengines-list@matronics.com
>
>
> If your start switch is also the master you have no power to the senders
> in
> the start mode. Check for pressure just as you release the start mode but
> the switch is still on.
> Jim
>
> -----Original Message-----
> From: krazydoc33
> Sent: Sunday, April 06, 2014 11:28 AM
> To: rotaxengines-list@matronics.com
> Subject: RotaxEngines-List: oil change question
>
>
> I just changed the oil at 19 hours from first start. I was going to change
> it at 20 hours but had the cowl off so went ahead. Drained the tank after
> burping the engine and replaced the filter. After putting 3.25 qts. back
> in
> the tank, which is just a little less than what I drained out, the oil
> level
> is above the dipstick hole. Pulled the prop. through 15-20 revolutions and
> ran the starter for 6-7 seconds, ignition off, no oil pressure and level
> did
> not go down. Pressurized the tank, via the oil blow by line, to about 7-8
> #
> with no change. This did not happen when I first filled the tank with oil.
> What am I doing wrong? Is it safe to start and check the oil pressure
> within
> 30 seconds?
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=421612#421612
>
>
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
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