Looking for a coil expert for a (new to me) 1986 John Deere 318 repowered to a (1996??) P218G (SN963493364) with electronic ignition. Tractor has been a lot like me. Works when it wants to but that isn't very often. Runs prefect when it does run then will just quit and won't restart until it's in the mood. Changed the ignition module. Failed the 1.4v alternating to 12V test. Stayed at 1.4v never changed. Checked hot after it quit.
Changed Ignition module, ring and insulator. Now my question. coil that was on the engine is an original onan reads 3.5 across small terminal, 17.01 across plug wire terminals. Have an aftermarket coil that is suppose to be right for electronic ignition, reads 3.6 small terminals, 21.0 across plug wire terminals. John Deere specs. -420000 small terminals 3.9-4.7, reads 12.6-15.4 across plug terminals. 420000- small terminals 3.7-4.6 plug terminals 34.02 - 41.6.
Guess in the 12.6- 15.4 is for the B43G points ignition. Guessing I have the wrong coil (s) for my engine??? Can the early coil be used on electronic ignition??? Is the condenser the same points vs electronic ignition???
Any help would be greatly appreciated
Robert.
Changed Ignition module, ring and insulator. Now my question. coil that was on the engine is an original onan reads 3.5 across small terminal, 17.01 across plug wire terminals. Have an aftermarket coil that is suppose to be right for electronic ignition, reads 3.6 small terminals, 21.0 across plug wire terminals. John Deere specs. -420000 small terminals 3.9-4.7, reads 12.6-15.4 across plug terminals. 420000- small terminals 3.7-4.6 plug terminals 34.02 - 41.6.
Guess in the 12.6- 15.4 is for the B43G points ignition. Guessing I have the wrong coil (s) for my engine??? Can the early coil be used on electronic ignition??? Is the condenser the same points vs electronic ignition???
Any help would be greatly appreciated
Robert.
