Hi,
That makes sense. The injectors can make a noise. If it is nearly starting with starting fluid, the engine isn't getting fuel. The next step would be to check fuel pressure.
Here is a link that shows in general how to test pressure:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Here are the directions specific to your vehicle. The attached pictures correlate with the directions. The fuel pressure specifications are included in the directions.
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1993 GMC Truck S15/T15 4WD Jimmy V6-262 4.3L VIN W CPI
Fuel System Pressure Test
Vehicle Powertrain Management Fuel Delivery and Air Induction Fuel Pump Fuel Pressure Testing and Inspection Component Tests and General Diagnostics Fuel System Pressure Test
FUEL SYSTEM PRESSURE TEST
Central Multiport Fuel Injection (CMFI)
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Fuel Supply System CMFI
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PROCEDURE
- Turn engine "OFF" and relieve system pressure. Refer to Fuel Pressure Release Procedure.
- Connect the fuel pressure gauge to the pressure connection. Wrap a shop towel around the fitting while connecting the gauge to avoid spillage.
- "START" engine and observe fuel pressure reading. It should be 380-420 kPa (55-61 psi).
- Turn engine "OFF" and relieve fuel pressure.
- Remove fuel pressure gauge.
- Reinstall fuel pressure connection cap.
- "START" engine and check for fuel leaks.
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Do this and let me know what you find. If you have other questions, let me know.
Take care,
Joe
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Thursday, September 24th, 2020 AT 6:40 PM