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 MANUALSPLYMOUTH1990LASER RS, 2.0 R, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSINTRODUCTIONIGNITION TIMING (1.8L)
1990 Plymouth Laser RS, 2.0 R, Standard
Ignition Timing (1.8L)
1990 Plymouth Laser RS, 2.0 R, StandardSECTION Ignition Timing (1.8L)
- Ensure vehicle is at operating temperature, all accessories are off and transmission is in Park or Neutral. Vehicle front wheels must be in straight-ahead position and curb idle speed set to specification. Turn engine off. Disconnect female connector from ignition timing connector (if equipped).
- Using a jumper wire, ground ignition timing adjustment connector (Yellow/Red wire). See Figure . Start engine. Check ignition basic timing. Loosen distributor hold-down bolt and adjust as necessary. Disconnect ground wire on ignition timing adjustment connector. Check ignition actual timing. Turn engine off. Remove all test equipment.
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.