Ncp91 1st Gear February 22, 2013 Share February 22, 2013 While changing engine oil recently, my workshop informed me that my valve cover was leaking oil and needed fixing. So a replacement part was duly procured and I took the opportunity to look at the insides of my 1NZ-FE engine: The cause of the oil leak. A perished rubber seal was the culprit. All these were meant to be one single rubber part. All shiny and slick. The oil is dark because its 10,000km old. Continued in the next post...... ↡ Advertisement Link to post Share on other sites More sharing options...
Ncp91 1st Gear February 22, 2013 Author Share February 22, 2013 Timing chain and VVTi mechanism. Chain looks ok. Looking down into the valves The new rubber seal is back into the valve cover. And all this is done on bargain-basement priced C@rlub3 engine oil, serviced every 10,000km, typically driven in stop-go traffic, occasional visits to redline. Link to post Share on other sites More sharing options...
Siewss 1st Gear February 22, 2013 Share February 22, 2013 How much did it cost you to change the valve cover seal (parts + labor)? Link to post Share on other sites More sharing options...
Pisces69 6th Gear February 22, 2013 Share February 22, 2013 Timing chain and VVTi mechanism. Chain looks ok. Looking down into the valves The new rubber seal is back into the valve cover. And all this is done on bargain-basement priced C@rlub3 engine oil, serviced every 10,000km, typically driven in stop-go traffic, occasional visits to redline. I too had the manifold gasked replaced twice on my 6yr old 130k km optra. I was surprised why it leak so often n e mech said its a common problem wh c@rlube oil. I dunno how true this is though. My previous corona also used c@rlube but never had this problem. I think its more design n parts quality issue. Link to post Share on other sites More sharing options...
Ncp91 1st Gear February 22, 2013 Author Share February 22, 2013 How much did it cost you to change the valve cover seal (parts + labor)? $50 fitted. I don't know how much the part itself cost though. Link to post Share on other sites More sharing options...
Ncp91 1st Gear February 22, 2013 Author Share February 22, 2013 I too had the manifold gasked replaced twice on my 6yr old 130k km optra. I was surprised why it leak so often n e mech said its a common problem wh c@rlube oil. I dunno how true this is though. My previous corona also used c@rlube but never had this problem. I think its more design n parts quality issue. Manifold gasket would never touch engine oil, right? Mine is the valve cover rubber seal. I suppose some types of engines use metallic/paper gaskets for a good seal between valve cover and block instead. I assumed mine was a paper gasket until the valve cover came off. I'm surprised rubber lasted so long against the heat of the engine..... Link to post Share on other sites More sharing options...
Trex101 3rd Gear February 22, 2013 Share February 22, 2013 What type of engine oil did you usually used? do you stick to 1 brand or try out a lot of brand? 1 Link to post Share on other sites More sharing options...
Zxcvb Turbocharged February 22, 2013 Share February 22, 2013 Not bad for a 1.5 toyota engine, still looks good. Link to post Share on other sites More sharing options...
Pisces69 6th Gear February 22, 2013 Share February 22, 2013 Manifold gasket would never touch engine oil, right? Mine is the valve cover rubber seal. I suppose some types of engines use metallic/paper gaskets for a good seal between valve cover and block instead. I assumed mine was a paper gasket until the valve cover came off. I'm surprised rubber lasted so long against the heat of the engine..... That part of e engine is sprayed wh oil as e camshaft spins n oil is splashing around in there. U try to open e oil filler cap when engine is running then u know. Early engines used cork gaskets but now i see all r rubber. Maybe its silicon rubber so oil dun affect it. Link to post Share on other sites More sharing options...
Fuelsaver Supercharged February 23, 2013 Share February 23, 2013 (edited) $50 fitted. I don't know how much the part itself cost though. That's very inexpensive, I'd a fren who drives a jap ride changed at agent for 100plus last year. Wc workshop is that? The mech knows the sequence of fastening n torquing right? U have the specs? Edited February 23, 2013 by Fuelsaver Link to post Share on other sites More sharing options...
Blue850r Clutched February 23, 2013 Share February 23, 2013 I too had the manifold gasked replaced twice on my 6yr old 130k km optra. I was surprised why it leak so often n e mech said its a common problem wh c@rlube oil. I dunno how true this is though. My previous corona also used c@rlube but never had this problem. I think its more design n parts quality issue. So the workshop just bad mouth the brand of oil you had been using. c-- ---e triple R is a good oil. Link to post Share on other sites More sharing options...
Pisces69 6th Gear February 23, 2013 Share February 23, 2013 That's very inexpensive, I'd a fren who drives a jap ride changed at agent for 100plus last year. Just e rubber gasket fr my optra already abt $50. Add labour abt $100 already. My old corona e rubber only abt $15 only n it lasts much longer. Link to post Share on other sites More sharing options...
Pisces69 6th Gear February 23, 2013 Share February 23, 2013 So the workshop just bad mouth the brand of oil you had been using. c-- ---e triple R is a good oil. Ya maybe cos i know c@rlube triple r is a good oil. I using it fr maybe >10 yrs ever since it 1st started selling in SG. Also cud b his ws dun hv this oil so he try to trick me into using some of e crappy oils he do have. Hahaha. But seems funny other kaki here also use c@rlube n hv manifold gasket leak? Maybe it contains something that eats e rubber gasket? Link to post Share on other sites More sharing options...
Fuelsaver Supercharged February 23, 2013 Share February 23, 2013 Just e rubber gasket fr my optra already abt $50. Add labour abt $100 already. My old corona e rubber only abt $15 only n it lasts much longer. About there. Urs super affordable. Link to post Share on other sites More sharing options...
Fuelsaver Supercharged February 23, 2013 Share February 23, 2013 While changing engine oil recently, my workshop informed me that my valve cover was leaking oil and needed fixing. So a replacement part was duly procured and I took the opportunity to look at the insides of my 1NZ-FE engine: The cause of the oil leak. A perished rubber seal was the culprit. All these were meant to be one single rubber part. All shiny and slick. The oil is dark because its 10,000km old. Continued in the next post...... Very gd condition. Can see virtually no wear. Link to post Share on other sites More sharing options...
GoodCar 4th Gear February 23, 2013 Share February 23, 2013 Ya maybe cos i know c@rlube triple r is a good oil. I using it fr maybe >10 yrs ever since it 1st started selling in SG. Also cud b his ws dun hv this oil so he try to trick me into using some of e crappy oils he do have. Hahaha. But seems funny other kaki here also use c@rlube n hv manifold gasket leak? Maybe it contains something that eats e rubber gasket? Unless the oil is aeroplane oil. Simple gasket change cost so much In Singapore. Link to post Share on other sites More sharing options...
Pisces69 6th Gear February 23, 2013 Share February 23, 2013 Unless the oil is aeroplane oil. Simple gasket change cost so much In Singapore. Rubber gasket 50bucks n labour abt 50bucks. By SG standard is quite cheap already. I go jb do only abt rm 120. Link to post Share on other sites More sharing options...
Mkl22 Twincharged February 23, 2013 Share February 23, 2013 That's very inexpensive, I'd a fren who drives a jap ride changed at agent for 100plus last year. Wc workshop is that? The mech knows the sequence of fastening n torquing right? U have the specs? Valve cover only la. No need to what torque specs. It's the valve head that needs it when you change head gasket. ↡ Advertisement Link to post Share on other sites More sharing options...
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