Enginetype: IOgas
> motormodel: OMC
2.3L Ford
> Serialnumber: 1987
> Configured: single
> boatmodel: Four
Winns
> Boatlocation:
> typeofneed:
Tune-up
> TechQuestion:
Submit Question
> The engine will
not keep the dwell setting. It has a Mallory distributor and points.
The problem was points would burn out after an hour or so. Checked the
coil and primary wiring to find that the factory reversed the resisted
wire with the hot start wire, causing the coil to burn out. Replaced
coil installed ceramic resistor to 'run' circuit, removed resisted
wire from 'start' circuit and replaced points. The engine ran fine for
about 20 to 30 minutes then died. Found that the point gap had dropped
to about half of the 0.019" it should have been. This is the
third or fourth time this has happened. Is there an electronic pickup
unit for these four cylinder distributors?
> Please help, this
is happening to two different boats with the same engine/drive
systems. The OMC dealer has been stumped also.
> Thank you,
Burned or pitted points
can be caused by:
* Hour meter hooked
into ignition circuit.
* Defective/incorrect
condenser. Check/replace the condenser. Check condenser for high
series resistance.
Capacity = 0.25 to .31
Microfarads..... 2.3L model only.
* Oil vapors getting
into the distributor and depositing on contact surfaces of points.
This causes arcing and rapid burning of breaker points. Oil vapor
entering distributor usually produces a smudgy line under the points.
Oil vapor enters the distributor by worn distributor bushings, damaged
distributor shaft seal, or high crankcase pressure. Check PCV valve.
* High voltage, or any
other condition in the electrical system causing excessive flow
through breaker points. This results in a blue scale forming on point
surfaces. Check battery and battery cable connections at both ends.
Check voltage regulator. Check if alternator is grounded correctly.
Check to see if starter solenoid is the correct type.
Incorrect ignition coil
and/or Ignition coil resistor wire not properly connected into
circuit. Connect between ignition switch and coil positive (+)
terminal.
Test cranking and
operating voltage at coil "+" terminal. Should not exceed 12
volts.
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