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 MANUALSVOLVO1987240 GL, 4D SEDAN, AUTOMATIC, AW70REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - BOSCH LH JETRONIC IIINTRODUCTIONCOMPRESSION TEST OR SIMILAR SERVICE CHECKS
1987 Volvo 240 GL, 4D Sedan, Automatic, AW70
Compression Test Or Similar Service Checks
1987 Volvo 240 GL, 4D Sedan, Automatic, AW70SECTION Compression Test Or Similar Service Checks
Disconnect wire from terminal 1 on ignition coil (arcing from fuel/injection system HT harness can damage control units). Disconnect wires from injectors, this prevents flooding engine, oil contamination etc.
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.