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If you need to check glow plugs on a Ford or Chevy Diesel engine, run a hot wire from your battery. un plug the glow plug wire and strike the hot wire to the end of the glow plug. If you get a spark the glow plug is good. you should do this to each one, but one at a time then replace the glow plug wire as you go.
The thermostat housing is located on top and front of the engine. You will see a large radiator housing coming from it. There are 4 bolts to open the housing (15mm) and hose clamp(s) to loosen on the radiator hose. Once removed just pull out the 2 thermostats. When you are replacing the thermostat(s)-the gasket(s) for the housing are on the attached to the new thermostats- As you probably noticed when pulling out the old ones.
Generally starters have 2 or 3 bolts and a thick wire coming from the battery and other miscellaneous connections.
You did not specify a vehicle that was on my list, i.e. 1988 Chevy Tahoe.
However, it may be similar to a Suburban R10: REMOVAL & INSTALLATION
The following is a general procedure for all trucks covered in this manual, and may vary slightly depending on model and series.
Disconnect the negative battery cable at the battery.
Raise and support the vehicle.
Disconnect and tag all wires at the solenoid terminal.
NOTE: Reinstall all nuts as soon as they are removed, since the thread sizes are different.
Remove the front bracket from the starter and the mounting bolts. On engines with a solenoid heat shield, remove the front bracket upper bolt and detach the bracket from the starter.
Fig. 1: Starter mounting location — 4.8L engines
Fig. 2: Starter mounting location — 4.3L and 5.0L engines
Fig. 3: Starter mounts — 5.7L and 7.4L engines
Remove the front bracket bolt or nut. Lower the starter, front end first, then remove the unit from the truck.
Position the starter and tighten all bolts as follows:
Thru-bolts: 40 ft. lbs. (54 Nm)
Bracket bolt: 30 ft. lbs. (41 Nm)
Nut (gas): 11 ft. lbs. (15 Nm)
Nut (diesel): 90 inch lbs. (10 Nm)
Thru-bolts: 35 ft. lbs. (45 Nm)
Bracket bolt (diesel): 24 ft. lbs. (33 Nm)
Nut (diesel): 75 inch lbs. (8.5 Nm)
Reconnect all wires.
Fig. 4: Disconnect the negative battery cable
Fig. 5: Remove the starter retaining bolts
Fig. 6: Remove the starter from the vehicle
Make sure all lines are light when turning engine over.While turning engine over loosen the a line closes to pump or the fuel filter.You should get some fuel.Then continue on all lines working farther away.