IBAUCLAPlaya Posted April 25, 2015 Report Share Posted April 25, 2015 Hi there, I had a thread back from last year describing some issues I've been having with smoke, either at cold startup, or when driving and letting off the throttle. Consensus seems to be valve seals, but I still haven't ruled out turbo failure. Recently I replaced my exhaust with 100% straight pipe from the turbos back. Since doing this, I've noticed a pool of oil in the exhaust...to me this sounds more like it could be turbo failure, but not sure. Does anyone have experience on Supras, and would be willing to look into this, help me diagnose the problem, and resolve? I'm on the east side of Town in Hilliard, and of course willing to compensate. Let me know. Matt Quote Link to comment Share on other sites More sharing options...
DavidBaustert Posted April 25, 2015 Report Share Posted April 25, 2015 Assuming a MK3 supra? If so, it's probably both. Easy way to check (well maybe not so easy if you're still CT26) but take the center section out of your exhaust housing or take the manifold off the head and check the ports for oil. Oil before the turbo=valve stem seals. Edit. Remember you have a MK4. Still stock twins? Taking the twins off may prove to be even more difficult than at CT26, but the same principle still applies. Quote Link to comment Share on other sites More sharing options...
Geeesammy Posted April 25, 2015 Report Share Posted April 25, 2015 So you haven't done valve stem seals, right? The only sure fire way to check is pull off the intake and exhaust manifold and see of oil is sitting on top of the valves. You could pull a plug out and check as well, but if your intercooler piping has oil in it then there is no telling whether or not it (the smoke) may be from both the turbos going bad or the valve stem seals. If it is at start up and idle I'll put my money on valve stem seals. If it's more frequent then that I'll say turbo seals. The valve stem seals on all the 1jz' and 2jz's go bad so you might as well replace them and go from there. Quote Link to comment Share on other sites More sharing options...
DavidBaustert Posted April 25, 2015 Report Share Posted April 25, 2015 Just out of curiosity are you running more than ~14# on the stock twins? This will more often than not kill those carbon seals in them. I agree with Grant. The parts aren't expensive, it's just a little labor intensive pulling the cams and springs to replace them, but can be done in a day. Quote Link to comment Share on other sites More sharing options...
Geeesammy Posted April 25, 2015 Report Share Posted April 25, 2015 I'd give it a weekend your first go around. It's a good time to go ahead and replace all the timing components and water pump. Be careful not to crack a cam too. Quote Link to comment Share on other sites More sharing options...
IBAUCLAPlaya Posted April 25, 2015 Author Report Share Posted April 25, 2015 Mkiv. On stock boost levels. I can buy the parts, but really looking for someone with experience to help me through this. I have air tools in my garage, or I'd be willing to drive anywhere in the area on a Saturday or Sunday for help. Quote Link to comment Share on other sites More sharing options...
DavidBaustert Posted April 25, 2015 Report Share Posted April 25, 2015 Mkiv. On stock boost levels. I can buy the parts, but really looking for someone with experience to help me through this. I have air tools in my garage, or I'd be willing to drive anywhere in the area on a Saturday or Sunday for help. You're going to need one of these to begin with: http://i270.photobucket.com/albums/jj84/sexicivic2000/1620.jpg and one of these http://lextreme.com/valve/vs_04.jpg Quote Link to comment Share on other sites More sharing options...
IBAUCLAPlaya Posted April 25, 2015 Author Report Share Posted April 25, 2015 Not sure what either of those are lol. Second almost looks like a compression tester fitting which I have. I was hoping someone already had these tools but I'm not opposed to buying/renting from autozone if not. Quote Link to comment Share on other sites More sharing options...
DavidBaustert Posted April 25, 2015 Report Share Posted April 25, 2015 The first one is a snap on valve spring compressor tool for OHC engines. The second one is the other half of a compression tester. You hook your air compressor up to it to keep the valves seated after you pull the keepers/retainers/valves. Might as well do timing belt, water pump, front main seal, timing belt tensioner, and cam seals while you're in there. If you're planning on doing cams/springs at some point, now would be the time to do them as well. Quote Link to comment Share on other sites More sharing options...
STEVE-O Posted April 25, 2015 Report Share Posted April 25, 2015 Time to pull the engine full rebuild and go single lol Quote Link to comment Share on other sites More sharing options...
DavidBaustert Posted April 26, 2015 Report Share Posted April 26, 2015 Time to pull the engine full rebuild and go single lol http://images.lazygamer.net/2012/07/kim_jong_il_team_america1.jpg Quote Link to comment Share on other sites More sharing options...
Geeesammy Posted April 26, 2015 Report Share Posted April 26, 2015 Ugh, typical Mk4 guy. Knows how to drive em but doesn't know how to fix em. Quote Link to comment Share on other sites More sharing options...
IBAUCLAPlaya Posted April 26, 2015 Author Report Share Posted April 26, 2015 Not just the mkiv, been the same with all cars I own. Plus wouldn't say I necessarily know how to drive it either... I'm good with nuts and bolts, but anything else like timing, wiring, etc I don't trust myself. Anybody willing to help, let me know. Quote Link to comment Share on other sites More sharing options...
DavidBaustert Posted April 26, 2015 Report Share Posted April 26, 2015 Not just the mkiv, been the same with all cars I own. Plus wouldn't say I necessarily know how to drive it either... I'm good with nuts and bolts, but anything else like timing, wiring, etc I don't trust myself. Anybody willing to help, let me know. Just sell it to me. I'll take care of her. Quote Link to comment Share on other sites More sharing options...
Geeesammy Posted April 26, 2015 Report Share Posted April 26, 2015 wouldn't say I necessarily know how to drive it either... Had wrx that I autoxed at the national level for a bit.. Quote Link to comment Share on other sites More sharing options...
IBAUCLAPlaya Posted April 29, 2015 Author Report Share Posted April 29, 2015 Been a long time since I autox'd, plus Supra is a very different animal than AWD wrx. Been thinking about this some more...since the oil is pooling up inside the exhaust, wouldn't this point more to turbo seals? Quote Link to comment Share on other sites More sharing options...
DavidBaustert Posted April 29, 2015 Report Share Posted April 29, 2015 Been a long time since I autox'd, plus Supra is a very different animal than AWD wrx. Been thinking about this some more...since the oil is pooling up inside the exhaust, wouldn't this point more to turbo seals? Not necessarily. To be 100% sure, you'll have to pull the manifold and look inside the ports on the head. Could be valve stem seals, could be turbo seals, could be both. Quote Link to comment Share on other sites More sharing options...
IBAUCLAPlaya Posted May 1, 2015 Author Report Share Posted May 1, 2015 Thanks for the feedback. At this point, I'd like to take it to someone who knows what they're doing to diagnose and fix. Does anyone have experience with slow motion motor sports in Sunbury? Quote Link to comment Share on other sites More sharing options...
verse Posted May 1, 2015 Report Share Posted May 1, 2015 Ugh, typical Mk4 guy. Knows how to drive em but doesn't know how to fix em. Try to be a bit more humble. The guy only asked a question and was looking for help. 1 Quote Link to comment Share on other sites More sharing options...
Geeesammy Posted May 1, 2015 Report Share Posted May 1, 2015 Thanks for the feedback. At this point, I'd like to take it to someone who knows what they're doing to diagnose and fix. Does anyone have experience with slow motion motor sports in Sunbury? Why not a Toyota dealer? Quote Link to comment Share on other sites More sharing options...
IBAUCLAPlaya Posted May 1, 2015 Author Report Share Posted May 1, 2015 I've had some bad experience at Toyota dealers, with very inexperienced techs, mis-diagnosing problems and not admitting they messed up. Looking for a speed shop with Supra experience on things like this. I would imagine most Toyota techs have never cracked into the head of a Supra and replaced valve stem seals... Quote Link to comment Share on other sites More sharing options...
EROtero Posted May 26, 2015 Report Share Posted May 26, 2015 When a similar issue happened to my supra it ended up being the turbos needing rebuilding/replacing. If I remember correctly, the money it took to replace to stock turbos was similar to the single turbo upgrade so I opted for that option (t72) and ended replacing the valve seals as part of the work as well. Is not a difficult task but time consuming nonetheless. Have you found someone in the area to work on your car? Try at the supraforums.com they may be able to help best. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.