HYDROSTATIC LOCKED ENGINE
When an engine is suspected to be hydrostatically locked, regardless of what caused the problem, the following
steps should be used.
1. Inspect air cleaner, induction system and intake manifold to insure system is dry and clear of foreign
material.
2. Remove negative battery cable.
3. Place a shop towel around the spark plugs when removing them from the engine. This will catch any fluid
that may possibly be in the cylinder under pressure.
4. With all spark plugs removed, rotate engine crankshaft using a breaker bar and socket.
5. Identify the fluid in the cylinder(s) (i.e., coolant, fuel, oil or other).
6. Make sure all fluid has been removed from the cylinders. Inspect engine for damage (i.e., connecting
rods, pistons, valves, etc.)
7. Repair engine or components as necessary to prevent this problem from re-occurring.
8. Install new spark plugs.
9. Drain engine oil and remove oil filter.
10. Install a new oil filter.
11. Fill engine with specified amount of approved oil.
12. Connect negative battery cable.
13. Start engine and check for any leaks.
REPAIR OF DAMAGED OR WORN THREADS
Damaged or worn threads (excluding spark plug and camshaft bearing cap attaching threads) can be repaired.
Essentially, this repair consists of drilling out worn or damaged threads, tapping the hole with a special Heli-
Coil Tap, (or equivalent) and installing an insert into the tapped hole. This brings the hole back to its original
thread size.
Heli-Coil tools and inserts are readily available from automotive parts jobbers.
ENGINE CORE AND OIL GALLERY PLUGS
CAUTION: DO NOT use starter motor to rotate the engine, severe damage may occur.
CAUTION: Squirt approximately one teaspoon of oil into the cylinders, rotate
engine to lubricate the cylinder walls to prevent damage on restart.
CAUTION: Be sure that the tapped holes maintain the original center line.
2010 Jeep Wrangler Sport
2010 ENGINE 3.8L - Service Information - Wrangler
viernes, 1 de octubre de 2021 05:18:29 p. m.
Page 13
© 2011 Mitchell Repair Information Company, LLC.
