Q: Th350 transmission leaks out of thr vent. On 1977 chevy k10

asked by on

I just had my th350 transmission rebuily. I put it back in filled it up the correct way went and put it through the gears then started to back up and transmission fluid started leaking out of the vent hole. ( I have the granny tunnel off so I can watch it happen ) it only leaks in reverse. I tried taking fluid out but then it wouldn't drive right and it still leaked. I drained as much as I could the slowly refilled it but it still leaks out of the vent in reverse. I have searched the internet and can't find anything. I'm about to talk to the guy ego rebuilt the tranny. I really don't want to pull it again. My question I guess is why is my th350 leaking out of the vent??? Its not over filled.
My car has an automatic transmission.

It sounds like it may have originally been over filled. Fill 4-5 quarts, then start the truck and then slowly fill up the remaining fluid. This should keep it from leaking from the vent hole.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Th350 transmission leaks out of thr vent. On 1977 chevy k10

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 1977 Mercedes-Benz 240D cranking, but not starting

Hi there. Either one or multiple glow plugs maybe malfunctioning. Also there maybe a fuel delivery probably as well. If there is not enough fuel ores in your system, then your vehicle will not start. This diagnoses needs to be...

Q: When I brake it makes a loud grinding noise

Hi, thanks for writing in. This is a sign of bad or warped brake rotors. When brake rotors get hot due to friction and then col down repeatedly, they can develop low spots in them which can cause them to...

Q: Car dies while on but at a stop, won't start until the next day.

It is possible that you could have a problem with your ignition switch. If the ignition switch has an electrical issue, this can cut out the ignition to the entire engine and cause it to die. This would also explain...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...