Valley Boater
Petty Officer 3rd Class
- Joined
- Oct 1, 2009
- Messages
- 80
I just purchased a boat with a clean '78 Evinrude 35 hp, I mean the builder inspection sticker is still on the block and the foam padding attached to the hood looks new (garage kept since new). I purchased from an estate with no children so I can't find any history for the motor.
First I wanted to test compression. The motor has electric start and a remote dash mounted key ignition circuit. I cleaned the battery leads and put on my new battery. I inserted the key and no power to the motor. I disconnected the dash circuit from the battery and wired the battery ground directly to the motor and made a hot lead that I touched to the starter solenoid and the starter jumped as it should. I tested the compression and got 135-140 on both cylinders.
I now want to test for spark. I plugged in a tester and using the same technique of touching the hot lead to the solenoid I didn?t observe any spark. I am wondering if I should even get a spark with a ?dead? remote starter switch? I pulled the switch from the dash and can?t find any terminals that show unswitched hot on my meter so it understandable that I have no electrical power to the motor.
The large approximately 2? wire bundle coming out of the motor has a hot and ground from the battery and a ?? bundle with I believe are 7 wires routed to the ignition switch. Perhaps the photos will help.
Here are my questions ?
Should I expect a spark with a faulty (or corroded) key switch if I jump the solenoid directly from the battery?
If not, how can I test to see if the motor is producing spark before purchasing a new switch?
Where can I find out the proper id of each of the 7 wires going to the start switch?
While I await some advice I will return to the start switch and label and remove he wires and clean up the posts and check the ends for corrosion.
The small white and small red wire have been cut but I don't see any severed wire so I guess it was snipped during the install. I assume the terminal with the larger red wire is the unswitched hot side of the switch.
Thanks in advance for any suggestions.
Don
First I wanted to test compression. The motor has electric start and a remote dash mounted key ignition circuit. I cleaned the battery leads and put on my new battery. I inserted the key and no power to the motor. I disconnected the dash circuit from the battery and wired the battery ground directly to the motor and made a hot lead that I touched to the starter solenoid and the starter jumped as it should. I tested the compression and got 135-140 on both cylinders.
I now want to test for spark. I plugged in a tester and using the same technique of touching the hot lead to the solenoid I didn?t observe any spark. I am wondering if I should even get a spark with a ?dead? remote starter switch? I pulled the switch from the dash and can?t find any terminals that show unswitched hot on my meter so it understandable that I have no electrical power to the motor.
The large approximately 2? wire bundle coming out of the motor has a hot and ground from the battery and a ?? bundle with I believe are 7 wires routed to the ignition switch. Perhaps the photos will help.
Here are my questions ?
Should I expect a spark with a faulty (or corroded) key switch if I jump the solenoid directly from the battery?
If not, how can I test to see if the motor is producing spark before purchasing a new switch?
Where can I find out the proper id of each of the 7 wires going to the start switch?
While I await some advice I will return to the start switch and label and remove he wires and clean up the posts and check the ends for corrosion.
The small white and small red wire have been cut but I don't see any severed wire so I guess it was snipped during the install. I assume the terminal with the larger red wire is the unswitched hot side of the switch.
Thanks in advance for any suggestions.
Don