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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 $36.00
Fits V6 engines with Thunderbolt Ignition
Includes cap, rotor, sensor wheel and gasket.
805759T3 Cap & Rotor-Sensor Wheel Kit $45.00
Fits V8 engines with Thunderbolt Ignition
Includes cap, rotor, sensor wheel and gasket.
A complete tune-up would address the following items:
Tune up KitsDistributor Cap and Rotor
Tune up KitsBreaker Points and Condenser (conventional ignition)
Tune up KitsSpark Plug Wires
Tune up KitsSpark Plugs
Tune up KitsFuel Filters (often more than one)
Tune up KitsCarburetor (adjustment or rebuild)
Tune up KitsFuel Injection Components (EFI and MPI systems)
Tune up KitsBelts (serpentine or v-belt)
Tune up KitsFlame Arrestor (clean & inspect)
Tune up KitsHoses (water and oil lines) and Hose Clamps
Tune up KitsOil and Oil Filter
Tune up KitsBatteries and Battery Cable Connections
Tune up KitsDwell and/or Timing
Tune up KitsIdle Mixture and Choke Adjustements
Tune up KitsShift Cable Adjustment
Tune up KitsEngine Alignment and Mount Inspection
Tune up KitsDrive Lube, Power Steering Fluid $ Trim Fluid levels
Tune up KitsComplete Engine Inspection
Tune up KitsComplete Steering and Gimbal Inspection
Tune up KitsGrease Propshaft, gimbal and steering
Tune up KitsInspect Drive or Transmission
Tune up KitsCheck and/or Replace Anodes
Tune up KitsExhaust Tubes and Clamps
Tune up KitsGround and Bonding Cable Connections


Use original Mercruiser factory parts for your tune-up or service.
Send your information to: sterndrives@bellsouth.net



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