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 MANUALSGMC1983VALUE VAN P2500, 6.2 J, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - DIESELREMOVAL & INSTALLATIONINJECTION PUMPINSTALLATION (VAN)
1983 GMC Value Van P2500, 6.2 J, Standard
Installation (Van)
1983 GMC Value Van P2500, 6.2 J, StandardSECTION Installation (Van)
- Install injection pump gasket. Position cylinder No. 1 at TDC by lining up crankshaft pulley mark with indicator. Align locating pin on injection pump hub with slot in injection pump driven gear. At the same time, align injection pump timing marks. See Figure.
- Attach injection pump to front cover. Alignment marks made during removal must be aligned. Tighten nuts. Attach pump to drive gear and tighten bolts.
- To complete installation, reverse removal procedure. Check timing and perform on-vehicle adjustments, if required.
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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.