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 MANUALSGMC1986VALUE VAN P3500, 7.4 W, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISCARBURETOR - ROCHESTER M4M SERIES 4-BBLAPPLICATION5.7L V8
1986 GMC Value Van P3500, 7.4 W, Standard
5.7L V8
1986 GMC Value Van P3500, 7.4 W, StandardSECTION 5.7L V8
CHEVROLET & GMC (ROCHESTER) CARBURETOR NO. (5.7L V8)
| Application | Man. Trans. | Auto. Trans. | ||
|---|---|---|---|---|
| Federal | ||||
| With A/C | ||||
| C, K10, K20 | N/A | 17085292 | ||
| C, K20, 30 | N/A | 17085213 | ||
| C, K, P20, 30 | 17085003 | N/A | ||
| G10, 20 | N/A | 17085228 | ||
| G30 | N/A | 17085298 | ||
| K10, 20 | 17085293 | N/A | ||
| Without A/C | ||||
| C, K10, K20 | N/A | 17085290 | ||
| G10, 20 | N/A | 17085229 | ||
| G30 | N/A | 17085294 | ||
| K10, 20 | 17085291 | N/A | ||
| High Altitude | ||||
| C, K10, 20 | N/A | 17085206 | ||
| K10, 20 | 17085235 | N/A | ||
RENDER: 1.0x
NO RELATED
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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.