Super Dave
03-22-2009, 10:39 AM
Hey all,
I bought an 89 Supra turbo back in august and it was running great for a couple months. I started to notice as I let off the gas and coast in gear that it would smoke pretty badly until I got back on the gas. It looked gray to me. The guy I bought it from said the turbo had been rebuilt(it's a ct26 57 trim) so I assume the turbo is not causing this but who knows. Not long after that it wouldn't start. I pulled the plugs and they looked pretty shitty, and a few of them were covered in oil. I replaced the plugs and it started up fine and ran great for a day. Day 2 it struggled to start and was fine after that. Day 3 no start again, I checked the plugs and what do you know, they have oil on the electrodes again. So the car pretty much sat for a few months now and I just recently started to get the motivation to figure out what's wrong with it. I changed all three valve cover gaskets and cleaned the plugs off before I went on vacation last week and it ran pretty well for a couple days. I just got home yesterday and went to start it today and it won't fire. Now for the other fun part, when it was running just the other day, I noticed a knocking noise that seemed to be at it's worst around the 2000-2500 rpm range. I revved it up to that point and held it, after about 10 seconds she started smoking like crazy. White/light grayish smoke. I'm considering just having this thing rebuilt, but I would like to at least try and figure out what's wrong. I'm not rebuilding it myself nor do I want to, I can handle small things like valve cover gaskets and simple shit, but I've ****ed previous cars up before when doing major undertakings.
Cliffs...
7mgte won't start
Symptoms:
Dark gray smoke on decel
Oil on electrodes of spark plugs
Knocking sound around 2000-2500 and white smoke when held at that rpm in neutral. I don't know about it while in gear and driving.
Replaced all 3 valve cover gaskets
Sorry for the novel, I've searched and searched and have gotten different ideas to what's wrong but can't really pinpoint it.
I bought an 89 Supra turbo back in august and it was running great for a couple months. I started to notice as I let off the gas and coast in gear that it would smoke pretty badly until I got back on the gas. It looked gray to me. The guy I bought it from said the turbo had been rebuilt(it's a ct26 57 trim) so I assume the turbo is not causing this but who knows. Not long after that it wouldn't start. I pulled the plugs and they looked pretty shitty, and a few of them were covered in oil. I replaced the plugs and it started up fine and ran great for a day. Day 2 it struggled to start and was fine after that. Day 3 no start again, I checked the plugs and what do you know, they have oil on the electrodes again. So the car pretty much sat for a few months now and I just recently started to get the motivation to figure out what's wrong with it. I changed all three valve cover gaskets and cleaned the plugs off before I went on vacation last week and it ran pretty well for a couple days. I just got home yesterday and went to start it today and it won't fire. Now for the other fun part, when it was running just the other day, I noticed a knocking noise that seemed to be at it's worst around the 2000-2500 rpm range. I revved it up to that point and held it, after about 10 seconds she started smoking like crazy. White/light grayish smoke. I'm considering just having this thing rebuilt, but I would like to at least try and figure out what's wrong. I'm not rebuilding it myself nor do I want to, I can handle small things like valve cover gaskets and simple shit, but I've ****ed previous cars up before when doing major undertakings.
Cliffs...
7mgte won't start
Symptoms:
Dark gray smoke on decel
Oil on electrodes of spark plugs
Knocking sound around 2000-2500 and white smoke when held at that rpm in neutral. I don't know about it while in gear and driving.
Replaced all 3 valve cover gaskets
Sorry for the novel, I've searched and searched and have gotten different ideas to what's wrong but can't really pinpoint it.