Perkins 1103 / 1104 — Glow Plugs - Test
Testing & diagnosis
For the Perkins 1103 / 1104, from the Perkins service manual.
Applies to: Perkins 1103, Perkins 1104, Perkins 1104 (1103 also covered) engine
Procedure
- Disconnect the power supply and the bus bar.
- Use a digital multimeter to check continuity and turn the audible signal ON.
- Place one probe on the glow plug connection and the other to ground; the multimeter should sound.
- Replace the glow plug if there is no continuity. Check continuity on all glow plugs.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 12 volt system glow plug amps/time: 30 initial, 21 at 4 sec, 14 at 8 sec, 10 at 20 sec, 9 at 60 sec.
- 24 volt system glow plug amps/time: 12 initial, 8.5 at 8 sec, 7 at 20 sec, 6 at 60 sec.
Full service-parts list: Perkins 1103 →, Perkins 1104 →
Source: Perkins service 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.