Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSISUZU1985I-MARK 2D HATCHBACK, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFEEDBACK CARBURETOR SYSTEM
1985 Isuzu I-Mark 2D Hatchback, Standard
Feedback Carburetor System
1985 Isuzu I-Mark 2D Hatchback, StandardSECTION Feedback Carburetor System
- Description
- Operation
- Testing
- Diagnostic System
- Trouble Codes
- Diagnostic Procedure
- Diagnostic Circuit Check
- System Performance Check,
- Vacuum Control Valve Check, Chart 1
- Electronic Control Module (ECM) Check, Chart 2
- Mixture Control Valve Check, Chart 3
- Air Switching Valve Check, Chart 4
- Open Loop & Wide Open Throttle (Wot) Check, Chart 5
- Anti-Dieseling Check, Chart 6
- Air System Check, Chart 7
- Fixed X° Dwell Chart 8
- Trouble Codes 21 Or 22, Chart 9
- Trouble Code 23, Chart 10
- Trouble Code 24, Chart 11
- Trouble Code 25, Chart 12
- "Check Engine" Lamp Out, Chart 13
- Trouble Codes 12 Thru 15, Chart 14
- Slow Cut System Check, Chart 15
- Canister Check, Chart 16
- Slow Cut Solenoid Check, Chart 17
- Removal & Installation
- Wiring Diagrams
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.