Engine Wont Start Help

beattie

Cadet
Joined
Jun 24, 2007
Messages
16
We have a 68 55hp evinrude, we completely redid the lower unit, carb kit, and it had some wires broken so we replaced them, but when we try to start it nothing happens, have tried everything we can think of. any suggestions please
 

ob

Admiral
Joined
Aug 16, 2002
Messages
6,992
Re: Engine Wont Start Help

Not knowing whether you have looked at these items,my recommendation is to perform a spark test and a compression test at cranking speed and see what you find.
 

beattie

Cadet
Joined
Jun 24, 2007
Messages
16
Re: Engine Wont Start Help

just found out ignition switch is bad, compression and spark tests were fine, now engine is turning over but not started. we are kind of wondering if it is wiring problem, will go buy book tomarrow for it.
 

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: Engine Wont Start Help

Beattie how did u know that the ignition switch was bad, since im having the same problems as you are. ty and gl
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,397
Re: Engine Wont Start Help

You need spark, fuel and compression to begin with. Then go from there.
 

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: Engine Wont Start Help

Can you do an inline spark test and/or compression test even though i cant get the boat to start? ty
 

fordsohc46

Seaman
Joined
Feb 7, 2004
Messages
56
Re: Engine Wont Start Help

yes it should still spark as long as the kill switch is in the run position. to do a compression test remove all plugs open throttle and crank engine 5-7 times. it should be 90-110 psi on all cylinders and there should not be much difference in pressures between the cylinders.
 

beattie

Cadet
Joined
Jun 24, 2007
Messages
16
Re: Engine Wont Start Help

when we use the ignition switch nothing-- so we jumped the starter solenoid with a wire and engine cranks good, but however found out last nite no fuel is getting to the carbs, so off today to buy filter kit (diaphram looked bad) dont know what the problem is with the switch, going to get wiring diagram to see if something is not hooked up correctly, have spark and compression on motor.
 
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