Only here a click when starting engine. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

truckster · 03-03-2026, 01:37 PM

There's a thick copper washer in the starter solenoid. When you turn the key, the voltage goes to the low-amperage side of the solenoid, creating an electromagnetic draw that closes the high-amperage side of the circuit. That contact occurs between the copper washer and two large contacts. After many cycles, carbon can build up on the copper and prevent the circuit from closing.

If you disassemble the solenoid, you can clean the copper disk and contacts with emery cloth and that should solve your problem.

03-03-2026, 01:37 PM	#2
truckster Registered User Join Date: Jan 2001 Location: Orem, Utah Posts: 8,264	Re: Only here a click when starting engine. There's a thick copper washer in the starter solenoid. When you turn the key, the voltage goes to the low-amperage side of the solenoid, creating an electromagnetic draw that closes the high-amperage side of the circuit. That contact occurs between the copper washer and two large contacts. After many cycles, carbon can build up on the copper and prevent the circuit from closing. If you disassemble the solenoid, you can clean the copper disk and contacts with emery cloth and that should solve your problem. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson 1972 K/5 Blazer CST 4WD 1963 Corvair Monza Spyder Turbo convertible 1995 Camaro Z/28



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