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 MANUALSCHRYSLER1987LEBARON GTS 2.2 D, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - TBITESTINGFUEL SYSTEM PRESSURE TEST
1987 Chrysler LeBaron GTS 2.2 D, Standard
Fuel System Pressure Test
1987 Chrysler LeBaron GTS 2.2 D, StandardSECTION Fuel System Pressure Test
- Release fuel system pressure. Disconnect fuel hose from fuel inlet on throttle body. Connect Fuel System Pressure Testers (C-3292 and C-4749) between fuel filter outlet hose and throttle body. Turn ignition on. Depress actuation test mode (ATM) button on Diagnostic Readout Box (C-4805) to activate fuel pump.
- Check reading on testers after system is pressurized. The correct pressure reading should be 13.5-15.5 psi (.95-1.09 kg/cm2 ). If system pressure is correct, remove testers. Reconnect fuel hose to throttle body using a new hose clamp of same type as original equipment.
- If pressure reading is low, move pressure tester so reading is taken between fuel supply line and fuel filter inlet hose. Repeat pressure test. If reading is correct, replace fuel filter.
- If reading is still low, lightly squeeze fuel return hose. Replace fuel pressure regulator if pressure now increases. If pressure continues to read low, fuel pump is defective or fuel pump intake filter is plugged.
- If pressure reading is high, disconnect fuel return hose at throttle body. Connect separate hose to throttle body with open end in clean container. Repeat pressure test. If reading is still high, replace fuel pressure regulator. If reading is correct, check all return lines for restrictions.
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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.