JagWarXCIII
New Member
- Joined
- May 26, 2020
- Messages
- 5
- Reaction score
- 0
- Points
- 1
- Location
- Texas
- Vehicle Year
- 1993
- Make / Model
- Ford Ranger
- Transmission
- Manual
My engine overheated some months ago and I'm just now getting around to rebuilding it. I took the heads in to a shop to be resurfaced and have the valves reseated with new stem seals. I installed the heads with all new gaskets, new lifters, push rods, and rocker arms.
We did a leak down test prior to installing the engine, and it showed 80% leakage in cylinders 2,4,5, and 6, and about 50% in 1 and 3. One side was leaking air through the intake ports and the other through the exhaust. We installed the engine anyway and assumed that starting it would cycle oil though them to get "wet" seal and perhaps stop the leaking. However, the engine will not start. It turns over but that's it. We checked spark and fuel, and have both. However with a gauge attached, there's no compression reading as the engine turns over. The heads were taken to the shop and were tested and they have a 5% leakage, so I'm not sure what's going on. Any and all help is appreciated, thank you.
We did a leak down test prior to installing the engine, and it showed 80% leakage in cylinders 2,4,5, and 6, and about 50% in 1 and 3. One side was leaking air through the intake ports and the other through the exhaust. We installed the engine anyway and assumed that starting it would cycle oil though them to get "wet" seal and perhaps stop the leaking. However, the engine will not start. It turns over but that's it. We checked spark and fuel, and have both. However with a gauge attached, there's no compression reading as the engine turns over. The heads were taken to the shop and were tested and they have a 5% leakage, so I'm not sure what's going on. Any and all help is appreciated, thank you.