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    Alpha I drive giving false RPM's and then missing

    I have a 1998 Chaparral 21 ft with an Alpa I drive, 5.0 liter 225 hp EFI.<br />It began to miss three weeks ago at full throttle operation, but runs fine at lower<br />throttle positions. When it begins to miss I have noticed that the tach is displaying inacurate RPM's. It begins to miss...
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    Alpha I drive 5.0 liter missing at full throttle

    I have a 1998 Chaparral 21 ft with an Alpa I drive, 5.0 liter 225 hp EFI.<br />It began to miss three weeks ago at full throttle operation, but runs fine at lower<br />throttle positions. Does someone have an idea what it might be, ignition or fuel,<br />or hopefully more specific. The boat has...
  3. D

    Alpha I 5.0 EFI missing at full throttle

    I have a 1998 Chapparal 21 ft with an Alpa I drive, 5.0 liter 225 hp EFI. It began to miss three weeks ago at full throttle operation, but runs fine at lower throttle positions. Does someone have an idea what it might be, ignition or fuel, or hopefully more specific.<br /><br />Thank you,<br...
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