My G M C safari overhead and intake gasket broke and was leaking the engine the head crack so I Replace engine Heads with 2 New Heads New Head Gasket & New Intake Manifold and to be safe a I replace the water pump and gaskets & I took out the thermostat But the Now Is Sill overheading
At times after working for long a comparatively small thing may generate big problems. I am suggesting you buy a new thermostat and fit it , then properly bleed the cooling system. If the engine still overheats, check the radiator,. If the radiator is clogged you may need to take it for cleaning or replace the radiator..And may also need to check Radiator cowling or shroud ,if it's not intact that's if broken it may reduce the Volume of air drawn through the radiator this in turn leads to overheating .Finally check if the fan clutch is in good working condition ,if it is loose it cannot 'pull ' enough air through the radiator to sustain proper cooling of the coolant hence overheating. If this doesn't work ,dismantle the engine and take it for pressure test to ascertain if there is any cracks between the the piston bores and the coolant channels in the engine block..Also do a straightness tests on both surfaces of the engine block.
At times after working for long a comparatively small thing may generate big problems. I am suggesting you buy a new thermostat and fit it , then properly bleed the cooling system. If the engine still overheats, check the radiator,. If the radiator is clogged you may need to take it for cleaning or replace the radiator..And may also need to check Radiator cowling or shroud ,if it's not intact that's if broken it may reduce the Volume of air drawn through the radiator this in turn leads to overheating .Finally check if the fan clutch is in good working condition ,if it is loose it cannot 'pull ' enough air through the radiator to sustain proper cooling of the coolant hence overheating. If this doesn't work ,dismantle the engine and take it for pressure test to ascertain if there is any cracks between the the piston bores and the coolant channels in the engine block..Also do a straightness tests on both surfaces of the engine block.
At times after working for long a comparatively small thing may generate big problems. I am suggesting you buy a new thermostat and fit it , then properly bleed the cooling system. If the engine still overheats, check the radiator,. If the radiator is clogged you may need to take it for cleaning or replace the radiator..And may also need to check Radiator cowling or shroud ,if it's not intact that's if broken it may reduce the Volume of air drawn through the radiator this in turn leads to overheating .Finally check if the fan clutch is in good working condition ,if it is loose it cannot 'pull ' enough air through the radiator to sustain proper cooling of the coolant hence overheating. If this doesn't work ,dismantle the engine and take it for pressure test to ascertain if there is any cracks between the the piston bores and the coolant channels in the engine block..Also do a straightness tests on both surfaces of the engine block.
You can also check the radiator cap or expansion Tank cap.
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You have a plugged radiator or heater line to back heater unit not allowing coolant to flow
SOURCE: 1997chevy expresss van leaking water pump and intake gasket leak
you need get the water pump change. seal broken and it is probably stop working.
check the thermostat when you at it. it probably need change too.
SOURCE: Coolant leak on 2001 Taurus.Coolant seems to be
heaterhose is in that general area. most common leak is that spraying aroung so it looks like something worse
SOURCE: lower intake manifold gasket leaking 02 Olds Silhouette
This is basicly a very time consuming job rather than a physically hard one to complete. In order to replace the gasket you must remove the intake plenum,throttle body, and misc. vacuum hoses. The wiring harness connections must also be disconnected. Finally the intake manifold is exposed. The bolts holding the manifold to the block are removed exposing the leaking gasket. After removing the push rods and placing them in the correct order to be replaced the gasket and sealants can be removed. Finally replace everything in reverse order. Be sure to consult a GM manual for correct bolt torch specs. The correct specs for the manifold bolts usually come with the gasket. Make sure to change your oil a few times after this job in case any coolant entered the block. Also,change the thermostat and the oil seal on the distributor half shaft cap while you have everything off. Good Luck
SOURCE: 1992 Toyota Previa van,Oil dripping onto exhaust manifold, replace head gasket? need a free manual!
The toyota previa uses a formed silicone gasket for the valve cover and the cover is held in place by metric shoulder bolts ( 10mm). The valve gasket leaks because you can't get enough preload on the bolts to re-seat the old gasket when it gets old and shrinks. The shoulder bolts only allow you to tighten the gasket enough to seat the shoulder on the bolt. If you continue to torque down the suspected bolts, you will snap the bolt off ( don't ask me how I know this ). You can either 1.)replace the old gasket with a new one or 2.) remove the existing bolts around the leak area and put in new metric bolts that do not have a shoulder. You may want to put in a small sleeve into the existing bolt hole but shorter than the thickness of the valve cover to account for the smaller diameter bolt. You can now torque down the bolt and get enough preload to seal the valve cover without removing the old gasket. Make sure you use a torque wrench ( in-lbs) or be very careful not to snap these small valve cover bolts.
2
Inspect
Belt
Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s).
3
Inspect
Oil Pan Gasket - Performance
Ruptured, cracked or leaking radiator hose.
4
Inspect
Radiator Cap
Worn or damaged radiator cap
5
Inspect
Thermostat
Thermostat stuck closed
6
Inspect
Fan Blade
Broken, missing, or defective fan blade(s).
8
Inspect
Water Pump
Damaged, worn or leaking water pump.
9
Inspect
Intake Manifold Plenum - Perform
Leaking water pump gasket.
10
Inspect
Cooling Fan Control
Faulty cooling fan control or circuit.
11
Inspect
Cooling Fan Switch - Radiator
Faulty radiator cooling fan switch or circuit.
12
Inspect
Engine Temperature Sensor
Faulty engine temperature sensor or circuit.
13
Inspect
Temperature Switch
Damaged or faulty temperature switch or temperature switch circuit.
14
Inspect
Fan Clutch
Worn, loose or faulty fan clutch.
15
Inspect
Ported Vacuum Switch
Damaged, leaking, or faulty ported vacuum switch.
16
Inspect
Radiator
Obstructed radiator core or radiator cooling fins.
17
Inspect
Head Gasket - Performance
Head gasket leaking coolant into cylinders
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