First of all, this was a turbo conversion...I have done several with no problems but my car isn't quite stock. I posted before a video of what the car does. recapping my old thread:
"Hey, in 2 weeks it makes a year since we did our turbo conversion, but don't have the car running right. The car runs, and you can drive it, but there are several issues going on. One of the main alarming issues, is that it is hard to start. Turning the key over for a good 15 seconds it will choke and cough and finally fire up. Once running, there is an obvious rattling sound going on inside the motor, the idle lopes, and if we just rev the motor a little off and on for around a minute, it will then idle smoothly and run fine (well-more on that later).
Anyway, while it is trying to idle, there is that rattling sound, seemingly coming from the lower end. Once the idle finally smooths out, it is gone, and no more problems-will rev fine and drive.
1st of all, the motor was recently rebuilt. Great compression, oil full. Again, it is not rod knock, but seemingly a timing issue, but timing is dead on. I have swapped out AFMs, ECUs, coil packs, and CPS with known good extras I have.
Can anyone put us on the right track before it snows?"
This was 5 months ago...
Oh, and the link to the 4 min video: http://media.putfile.com/Engine-rattling
Update...It was finally a nice day outside so I went ahead and swapped the complete upper intake manifold (with a good TPS, IAC, and Cold Start Injector). No real difference. It was still a little hard to start, then the idle was erratic, rattled inside, and then finally everything was fine and it idled around 800. I also drove it to the muffler shop some 12 miles away and back. It still sputters if I don't continuously ease into the gas, and a little under load going uphill even at 3000 RPMs causing me to downshift.
Sad...as many MK3 Supras I have saved and put back on the road over the years, and I can't even get mine running right.
"Hey, in 2 weeks it makes a year since we did our turbo conversion, but don't have the car running right. The car runs, and you can drive it, but there are several issues going on. One of the main alarming issues, is that it is hard to start. Turning the key over for a good 15 seconds it will choke and cough and finally fire up. Once running, there is an obvious rattling sound going on inside the motor, the idle lopes, and if we just rev the motor a little off and on for around a minute, it will then idle smoothly and run fine (well-more on that later).
Anyway, while it is trying to idle, there is that rattling sound, seemingly coming from the lower end. Once the idle finally smooths out, it is gone, and no more problems-will rev fine and drive.
1st of all, the motor was recently rebuilt. Great compression, oil full. Again, it is not rod knock, but seemingly a timing issue, but timing is dead on. I have swapped out AFMs, ECUs, coil packs, and CPS with known good extras I have.
Can anyone put us on the right track before it snows?"
This was 5 months ago...
Oh, and the link to the 4 min video: http://media.putfile.com/Engine-rattling
Update...It was finally a nice day outside so I went ahead and swapped the complete upper intake manifold (with a good TPS, IAC, and Cold Start Injector). No real difference. It was still a little hard to start, then the idle was erratic, rattled inside, and then finally everything was fine and it idled around 800. I also drove it to the muffler shop some 12 miles away and back. It still sputters if I don't continuously ease into the gas, and a little under load going uphill even at 3000 RPMs causing me to downshift.
Sad...as many MK3 Supras I have saved and put back on the road over the years, and I can't even get mine running right.
Last edited:
