My 70 hp evinrude motor will not turn over. New battery,new fuel filter,new starter,still no success! Ideas!!

Question

My 70 hp evinrude motor will not turn over. New battery,new fuel filter,new starter,still no success! Ideas!!

Answer 1

take out your spark plugs and see if it turns over,, if not it might be froze up ,,if so put in a good penetrating oil and let it and let it set a day or to

Answer 2

By "will not turn over", do you mean no rotation at all?  The reason I ask is because a fuel filter has nothing to do with turning over.  The term "turning over" refers to rotation, whereas "will not fire" means no ignition, it turns, but doesn't start.  Your problem is easily solved, but you need to repost your question with these facts:

1. Does the engine turn when the starter is turned on?

2. If the engine turns over, is it vigorous or very slowly turning?

3. Have you changed the spark plugs?

4.  If the engine does NOT turn, have you removed the spark plugs, put it in gear and tried to turn the engine with your hand? If you can't turn it, it's seized. - It does take some effort to turn it.

5. Is it fuel injection or carburetors?

6. What year is it?

7. If it does turn over, try removing a spark plug, connect the  plug to its lead, let the metal end rest against the block and turn the engine over. Do you see a big, healthy spark?

8. Is it full of fresh gasoline? Believe it or not, gas goes stale over a winter and may cause an engine to run poorly or not all all.  Drain the tank and all lines of stale gas and refill.

If you can answer those questions, I promise I can help you narrow your problem down.

PS: Kudos for trying to help yourself!

Answer 3

In some of the outboard engines there is a little inline fuse in the ignition. This fuse could be burned out. But as you say there is nothing happening.

Everything jtexas suggests shouldn't matter, these are all solutions after the motor is turning over. If the engine is dead, there is no battery (did it take the charge), maybe cables reversed, but my bet is that little fuse.

Answer 4

I'm not sure i understand your question when you say it will not turn over. Do you mean when you turn the key nothing happens? If that is the case, it sounds like the motor is in gear. The motor will not turn over if it is in gear. Take it out of gear and then try it. I hope that solves your problem.

Answer 5

need more info

do you here a click   then its the starter selenoid  if you here nothingsee if your getting power to the starter  use a multimeter   you have to track it down  if your not getting juice to the starter  check the key switch  there might be a short going to the key switch

Answer 6

The third post hit the nail on the head, you need to repost your question and specify exactly what you mean by "will not turn over"  

On another note, why do some of these butt-heads give guys a thumbs-down for good answers? Grow-up and accept the fact that you're not a master mechanic, 'cause if you were, you'd look for a proper debrief before you offer advice. Every real mechanic knows that one. You guys would probably suggest an overhaul before checking to see if there's gas in the tank.

Answer 7

What year motor?

When's the last time this motor was used?  When was the last carb rebuild?

Does it have an emergency lanyard, and is it in the run position?

I'm assuming, since you replaced fuel filter and fuel, that the starter is engaging the flywheel and turning it at a good rate of speed.  It needs 300 RPM to generate spark.

So, stop randomly throwing parts at it and do some basic troubleshooting.  That way, you'll only have to fix what's actually broke.

First, compression test.  No point spending money on a motor with bad compression.  Look for even PSI across all the cylinders.  The lowest should be within 7% of the highest.

Second, spark test.  Not a "spark plug" test.  Get an inline spark tester (couple bucks at a car parts store), set the gap for 7/16", clip it to the engine block, connect the plug leads (one at a time), and look for a sharp blue spark while a friend cranks the engine with the key.

Third, fuel.  Does the primer bulb get firm when you pump it up, and stay firm?

If this is an '81 (or is it '82?) or earlier it'll have choke plates.  Does the electric choke solenoid engage when you push the key in?  Take the airbox cover off and observe whether all three choke plates are closing completely.

If it's a later model, it has a primer system instead.  Does the primer solenoid engage when you push the key in?  Is the little red lever pointed back down toward the bottom of the solenoid?

Does the timer base move all the way to its stop when you lift the hi-idle lever?

Put some 50:1 premixed fuel/oil in a spray bottle and spray into the carb throats and try again----does it sound like it wants to start now?

Don't use starting fluid or carb cleaner or anything else, as those have no lubricating oil.