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No fire on #1 and #3

J

jroby

New member
"first motor is 1977 85hp john

"first motor is 1977 85hp johnson (85ETLR77S)
parked 2 years ago (bad foot and i thought 1 cylinder missing). finally found lower end and picked up a coil. Lower end on, changed coil and no power. Found no fire to #1 and #3. Thought power pack (now have new power pack that I dont need). Need advice I am thinking timer base but want to be more sure befor I start to buy more parts that I dont need. I also cleaned the carbs."
 
"The timer base has two sensor

"The timer base has two sensors. One fires 1 and 3, the other fires 2 and 4. Sounds like either one sensor is faulty OR a wiring problem exists.... broken or shorted sensor wire leading timer base to powerpack."
 
I have looked at the sensor wi

I have looked at the sensor wires going int to the timer base (well up to the clamp) and looks ok. How do I go about checking the timer base sensor for 1 and 3. I have looked at various sites and not to clear about it. I am a heating and ac tech so I know my way around a volt meter. I keep seeing something about DVA???
 
I prefer the plain needle type

I prefer the plain needle type ohm/volt meter. The digital meters can give weird reeadings at times. The sensors should read 8.5 ohms +/- 2.0 ohms on the low ohms scale.
 
i'm having the same proble

i'm having the same problem on my 1973 johnson 65hp.
 
"Checked ohms with a digital m

"Checked ohms with a digital meter (cant get my hands on a needle meter tonight). Results are 12 ohms on sensor wire 2 to sensor wire 4.... and .346 ohms on sensor wire 1 to sensor wire 3. so if I did this right that means I need a new timer base. Found 1 for $187.50 at outboard ingnition.com, I know I am takeing a chance on a used one but I might try the local boat yards and see how much they want for 1."
 
Understood. There are many goo

Understood. There are many good used ones around that are every bit as good as a new one.
 
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