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Mercruiser Thunderbolt Ignition Tune-Up Kits

[Standard Points-Style Ignition][Thunderbolt Ignition][Delco EST & HEI Electronic Ignition][Ignition & EFI Tools]

Click HERE for the Tune-Up Kit Chart.

Keeping your engine well tuned will improve performance and save fuel. Performing a complete tune-up can often take care of nagging running and starting problems. It is more difficult to troubleshoot a poor running engine that is not tuned.

Thousands of "do-it-yourselfer" customers perform their own tune-ups every year and they save good money doing it.
With a factory Service Manual and the correct tools, tune-up's are snap.

The Engine Owners Manual that came with your engine has a wealth information pertaining to
tune-up and maintenance procedures and schedules.

The Thunderbolt Ignition system was designed by Mercury Marine.
It is a very powerful and reliable ignition system.

The Thunderbolt system does not use points. Instead, it has an electronic "Sensor" in the distributor which sends a low voltage pulse to the Ignition Module each time a Sensor Wheel tab passes through the Sensors gap.

The Sensor Wheel is attached to the Rotor. When you buy a rotor, you get the sensor wheel. They should always be replaced together.

Thunderbolt Cap & Rotor/Sensor Wheel Kits

815407T5 Cap & Rotor-Sensor Wheel Kit $37.00 Fits V6 engines with Thunderbolt Ignition Includes cap, rotor, sensor wheel and gasket.
805759T3 Cap & Rotor-Sensor Wheel Kit $47.00 Fits V8 engines with Thunderbolt Ignition Includes cap, rotor, sensor wheel and gasket.

A complete tune-up would address the following items:

Distributor Cap and Rotor Breaker Points and Condenser (conventional ignition) Spark Plug Wires Spark Plugs Fuel Filters (often more than one) Carburetor (adjustment or rebuild) Fuel Injection Components (EFI and MPI systems) Belts (serpentine or v-belt) Flame Arrestor (clean & inspect) Hoses (water and oil lines) and Hose Clamps Oil and Oil Filter Batteries and Battery Cable Connections

Dwell and/or Timing Idle Mixture and Choke Adjustements Shift Cable Adjustment Engine Alignment and Mount Inspection Drive Lube, Power Steering Fluid $ Trim Fluid levels Complete Engine Inspection Complete Steering and Gimbal Inspection Grease Propshaft, gimbal and steering Inspect Drive or Transmission Check and/or Replace Anodes Exhaust Tubes and Clamps Ground and Bonding Cable Connections

Use original Mercruiser factory parts for your tune-up or service.
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