Why is my Turbo 350 leaking?

Your leak, as mentioned, could be from the front trans seal sealing the t/conv snout, or a faulty O-ring about the oil pump and the ring has a scratch/divot as the pump was installed into the case. Oil leaked up inside the case and when the oil reached the O-ring seal defect, oil leaked out.

What would cause a transmission fluid leak?

Causes of Transmission Fluid Leaks One reason for a leak might be high-temperature wear and tear has caused the pan seals on your transmission to break and leak fluid. Over time, road debris and heat can cause the transmission fluid lines to crack or break, which can cause fluid to leak out.

How can you tell where a leak is coming from on a transmission?

If you find puddles of red, slick liquid on your driveway where the front and middle of your car sit, you most likely have a transmission fluid leak. Pay attention to signs from your car. If the transmission is slow to start, your transmission fluid levels are low and there may be a leak.

How do I stop my transmission pan from leaking?

If you discover a leak from a gasket or seal in your transmission, the best way to stop the leak is to simply add BlueDevil Transmission Sealer to your transmission fluid.

How big is the fluid leak on a Chevy TH350s?

Often it is the front pump seal that causes large fluid leaks on th350s – it isn’t the input shaft seal, it is around the front pump (roughly 6-8 inches in diameter). A lot of people forget to do them – and some transmission shops aren’t particularly careful about putting these seals in carefully on their rebuilds.

How do you drain transmission fluid from a TH350?

Then, the body is held, and the screw of T-1001 is tightened against the selector shaft to draw the seal from its bore. Provides the easy removal and installation of the selector shaft (shift lever) seal. Installs the selector shaft seal with the shaft either in place or removed. Draining of the transmission fluid is not required.

Why is my Turbo 350 transmission leaking fluid?

The converter is draining down while sitting. This allows the fluid level to go above the selector shaft seal and the speedometer input seal. Replace these before the front pump seal and your problem will probably be reduced or eliminated.

Is the torque converter leaking on my TH350?

Initially, I considered that the torque converter was leaking but there is no evidence when you take off the inspection where it bolts to the flywheel. No signs of leaking. I considered that the front pump seal might be bad but not sure that would create this problem since it is gear connected.