---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sun 04/06/14: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 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 _____________________________________ Time: 09:30:54 AM PST US Subject: RotaxEngines-List: oil change question From: "krazydoc33" 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 _____________________________________ Time: 09:46:41 AM PST US From: "Jim Roberts" Subject: Re: RotaxEngines-List: 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 _____________________________________ Time: 10:36:44 AM PST US From: Subject: =?utf-8?Q?Re:_RotaxEngines-List:_oil_change_question? 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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, 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 > *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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.