oil pressure & oil leak damn 7m!

suprajim · 10-28-2010, 01:35 AM

http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=21

This will show you how to remove and reinstall it. I would also mark the position of the bolt with paint or something as it will help you to get the timing set right (or pretty close) after reinstalling. I definitely would check the timing afterward, just to make sure all is good. It's easy to be off a tooth after reinstalling. You can't really "mess up the engine". It will just run like crap, if at all, if it isn't installed correctly.

If you remove the accordian hose, you should also check the oil pressure sender and the copper crush washer on the turbo oil line as you will have easy access to them. These are a couple other places that could possibly be leaking.

aamt07 · 11-10-2010, 06:52 AM

Okay I think I have everything I need but I have one more question in the CPS diagram from the Cygnus website that SupraJim posted (right above this post) It shows an o-ring at the end of diagram now correct me if im wrong but thats not where the O-ring goes correct? it goes here right? Or does it have one on the other side of gear on the shaft(@end far left of pic) and one on right where it says O-ring in yellow? Original post by Bill UK.. http://www.toyota-supra.info/forums/...on-sensor.html

btwilson86 · 11-10-2010, 07:03 AM

There is only the one o-ring, and it goes exactly where it is in that image you posted, after the gear and alignment teeth

aamt07 · 11-10-2010, 07:43 AM

OK, cool thanks! whats up with this small o-ring and why is it at the back of the CPS shaft in the diagram in this link?

http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=21

Bill UK · 11-10-2010, 10:58 PM

Quote:

Originally Posted by aamt07

OK, cool thanks! whats up with this small o-ring and why is it at the back of the CPS shaft in the diagram in this link?

http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=21

They call that technical drawing; it’s a clear way to illustrate parts or items, bog standard drawing office procedure worldwide. Many of the drawings on the cygnusx1 site are illustrated this way for clarity. An assembly drawing on the other hand would show the O ring in the correct position or an arrow pointing to its correct position.

aamt07 · 11-21-2010, 04:43 AM

Okay so I have replaced the O-ring in the CPS. The oil leak has seem to stop but there were 2 reasons I wanted to replace the O-ring. 1 of course was the oil leak the other was smoke would rise from that general area. I thought ok its because of oil leak. Now when I start the car, let it run and warm up everything seems to be fine, until I turn the car off once I trun car off it starts to smoke in that area and it dosent smell like oil it smells like plastic burning. I checked inside of the dust cover to see if any oil leaked into CPS and theres nothing also thought the reason why there was no smoke was because of the fan turning on blowing the smoke to back of engine i used a red laser to see if i could see any kind of smoke at night time and there was no smoke. Anyone have this problem at one time or another? Or know what it could be?

By the way from start to finish it only took 2 hours, and i was taking my sweet time with it. rather easy fix!

MA70-3.0GT · 11-25-2010, 01:01 PM

just a thought, are you still running this showing no oil pressure? have you verified that this is a faulty reading at all as you'll kill the motor if there really is no oil pressure...

My immediate thought with the two problems though would be the oil pressure sender, which is the silver part just below the freeze plug in the above pic. if this is loose/damaged oil could be leaking from here & not registering the pressure correctly. Get that fixed ASAP as the oil pressure & water temp gauges are the 2 most important on any motor IMO...

MK3Newb · 07-17-2011, 05:36 PM

Quote:

Originally Posted by aamt07

OK, cool thanks! whats up with this small o-ring and why is it at the back of the CPS shaft in the diagram in this link?

http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=21

i think that diagram is showing the o-ring that goes on the back of the shaft not necessarily in front of the gear cause look how it has a diamond on it i think its just pic to show you the parts involved with the piece.

10-28-2010, 01:35 AM	#1
suprajim Intake Join Date: Jul 2009 Location: Dallas, TX Posts: 36	http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=21 This will show you how to remove and reinstall it. I would also mark the position of the bolt with paint or something as it will help you to get the timing set right (or pretty close) after reinstalling. I definitely would check the timing afterward, just to make sure all is good. It's easy to be off a tooth after reinstalling. You can't really "mess up the engine". It will just run like crap, if at all, if it isn't installed correctly. If you remove the accordian hose, you should also check the oil pressure sender and the copper crush washer on the turbo oil line as you will have easy access to them. These are a couple other places that could possibly be leaking. __________________ 1992 Supra 7MGTE A/T w/Sunroof Super Red/Shadow Gray

11-10-2010, 06:52 AM	#2
aamt07 Stock Join Date: Oct 2010 Location: houston, Tx Posts: 24	Okay I think I have everything I need but I have one more question in the CPS diagram from the Cygnus website that SupraJim posted (right above this post) It shows an o-ring at the end of diagram now correct me if im wrong but thats not where the O-ring goes correct? it goes here right? Or does it have one on the other side of gear on the shaft(@end far left of pic) and one on right where it says O-ring in yellow? Original post by Bill UK.. http://www.toyota-supra.info/forums/...on-sensor.html Last edited by aamt07; 11-10-2010 at 08:16 AM.

11-10-2010, 07:03 AM	#3
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	There is only the one o-ring, and it goes exactly where it is in that image you posted, after the gear and alignment teeth __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

11-10-2010, 07:43 AM	#4
aamt07 Stock Join Date: Oct 2010 Location: houston, Tx Posts: 24	OK, cool thanks! whats up with this small o-ring and why is it at the back of the CPS shaft in the diagram in this link? http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=21 Last edited by aamt07; 11-10-2010 at 07:45 AM.

11-21-2010, 04:43 AM	#6
aamt07 Stock Join Date: Oct 2010 Location: houston, Tx Posts: 24	Update Okay so I have replaced the O-ring in the CPS. The oil leak has seem to stop but there were 2 reasons I wanted to replace the O-ring. 1 of course was the oil leak the other was smoke would rise from that general area. I thought ok its because of oil leak. Now when I start the car, let it run and warm up everything seems to be fine, until I turn the car off once I trun car off it starts to smoke in that area and it dosent smell like oil it smells like plastic burning. I checked inside of the dust cover to see if any oil leaked into CPS and theres nothing also thought the reason why there was no smoke was because of the fan turning on blowing the smoke to back of engine i used a red laser to see if i could see any kind of smoke at night time and there was no smoke. Anyone have this problem at one time or another? Or know what it could be? By the way from start to finish it only took 2 hours, and i was taking my sweet time with it. rather easy fix! __________________ 91 TURBO TARGA TOP 5 SPEED PEARL WHITE.... UNDER CONSTRUCTION...

11-25-2010, 01:01 PM	#7
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	just a thought, are you still running this showing no oil pressure? have you verified that this is a faulty reading at all as you'll kill the motor if there really is no oil pressure... My immediate thought with the two problems though would be the oil pressure sender, which is the silver part just below the freeze plug in the above pic. if this is loose/damaged oil could be leaking from here & not registering the pressure correctly. Get that fixed ASAP as the oil pressure & water temp gauges are the 2 most important on any motor IMO... __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!

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