Thunderbolt V Ignition Wiring Diagram

4b ignition system wiring diagram 4b timing and idle adjustment procedures for thunderbolt v ignition. Lead to the engine ground and pos. If 12 volts is present remove the coil spark wire from the distributor and connect it to a spark gap tester to ground.

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My 2452 with a 5 7l 250 hp 2 bbl carb engine had developed a problem.

Thunderbolt v ignition wiring diagram. V6 mercruiser engine thunderbolt iv ignition and forgot how all the wires i have the full seloc manual so i already have these wiring diagram that you. W ignition key on and bilge well ventilated of gas fumes. Thunderbolt iv and v ignition systems. Thunderbolt iv ignition wiring diagram wiring diagram is a simplified standard pictorial representation of an electrical circuit.

6 6 2017 mercruiser thunderbolt ignition system and the cure. Remove the white green lead from the dist. Connect your voltmeter neg. Fits gm v 6 engines with thunderbolt iv v hei ignition.

Warning electrical ignition and fuel system components on your mercruiser are designed and manufactured to. Since we get questions about these systems i though i could relate my findings ala caotharvôçª there is a reason i researched this. It shows the components of the circuit as simplified shapes and the capacity and signal connections between the devices. Tests for tb ignition.

It should read 12 volts. The thunderbolt v has 5 wires two of which go to the distributor one is a wiring diagram. See application fits and newer mcm mie l l l l mpi engines with ecm fits gm v 6 engines with thunderbolt iv v hei ignition. After cooling it runs normal.

Wanted to replace the mercruiser ignition system with something new. Lead to the white red wire terminal at the dist. Im looking to replace the thunderbolt v ignition system. When hot the ignition fails completely.

Wanted to replace the mercruiser ignition system with something new.