Isuzu — Pre-heating Procedures (QOS system)
Operation · Engine starting / glow plugs
From a Isuzu owner's manual — check it applies to your exact model before use.
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Before you start
- Do not use starting aids in the air intake system; such aids can cause immediate engine damage.
Procedure
- Turn the starter switch key to the DRIVE position; the glow plug will grow red-hot to pre-heat the engine and the pre-heating indicator lamp is actuated.
- When the pre-heating indicator lamp goes out, try starting the engine at once.
- For reference, pre-heating time is about 1 sec at 50 degrees C, about 2 sec at 20 degrees C, about 3.5 sec at 0 degrees C and about 5 sec at -15 degrees C.
Specs & values
- Pre-heating time (QOS): about 5 seconds at -15 degrees C (5 degrees F)
Source: Isuzu owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.