1980 25hp evinrude (no fire)

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Feb 27, 2013

• #1

Dropped lower unit, relpaced water pump impeller. Got it all back together, now it wont start. Cant get no fire to spark plugs. It did start for a sec when I was chking plug wires with screwdriver. I was holding screwdriver in end of plug wire and close to spark plug it caught fire, but was shocking fire outa me... Any suggestions?? I

 

L

Lone Duck

Master Chief Petty Officer

Joined

Oct 17, 2007

Messages

868

• Feb 27, 2013

• #2

Re: 1980 25hp evinrude (no fire)

JBurks said:

Dropped lower unit, relpaced water pump impeller. Got it all back together, now it wont start. Cant get no fire to spark plugs. It did start for a sec when I was chking plug wires with screwdriver. I was holding screwdriver in end of plug wire and close to spark plug it caught fire, but was shocking fire outa me... Any suggestions?? I

Click to expand...

I think you now have a loose or disconnected ground wire. check all.

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Feb 27, 2013

• #3

Re: 1980 25hp evinrude (no fire)

Lone Duck said:

I think you now have a loose or disconnected ground wire. check all.

Click to expand...

I did. Fired up just fine before I pulled lower unit. All done in same day

 

fireman57

Captain

Joined

Aug 24, 2004

Messages

3,811

• Feb 27, 2013

• #4

Re: 1980 25hp evinrude (no fire)

Check your 20 amp fuse. I bet it's blown.

 

L

Lone Duck

Master Chief Petty Officer

Joined

Oct 17, 2007

Messages

868

• Feb 28, 2013

• #5

Re: 1980 25hp evinrude (no fire)

fireman57 said:

Check your 20 amp fuse. I bet it's blown.

Click to expand...

But then how did it fire when he used screw driver to check spark ?

 

fireman57

Captain

Joined

Aug 24, 2004

Messages

3,811

• Feb 28, 2013

• #6

Re: 1980 25hp evinrude (no fire)

He lost spark right after that. Just something simple to check. I like doing the simple things first before jumping all over the place and throwing parts at a problem. If the fuse checks out then he can test his coils, powerpack, etc.. Cleaning and checking the ground is another easy thing to check first and eliminate as a source of the problem.

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Feb 28, 2013

• #7

Re: 1980 25hp evinrude (no fire)

When I used screwdriver it turned over a few times with no spark, then just caught spark, cranked then died when I let go. where would fuse be at?

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Feb 28, 2013

• #8

Re: 1980 25hp evinrude (no fire)

It has no fuses... Urgghhhh

 

fireman57

Captain

Joined

Aug 24, 2004

Messages

3,811

• Feb 28, 2013

• #9

Re: 1980 25hp evinrude (no fire)

There is a small inline black fuse holder. It should have a wire clamp holding the 2 sides together. It is supposed to be in the engine compartment.

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Feb 28, 2013

• #10

Re: 1980 25hp evinrude (no fire)

Buss fuse or inline?

 

fireman57

Captain

Joined

Aug 24, 2004

Messages

3,811

• Feb 28, 2013

• #11

Re: 1980 25hp evinrude (no fire)

inline.

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Mar 1, 2013

• #12

Re: 1980 25hp evinrude (no fire)

Nope, no fuses anywhere

 

jasper60103

Commander

Joined

Sep 18, 2008

Messages

2,055

• Mar 1, 2013

• #13

Re: 1980 25hp evinrude (no fire)

As stated before, check the ground connections to the power pack and coils.
Temporarily disconnect the black/yellow wire from stop button/switch, and make sure its not grounded anywhere.

Also, it sounds like you're testing spark at the spark plug.
Get a real spark tester. Set it for 7/16" gap.
A healthy CDI spark can jump across the street. :lol:

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Mar 1, 2013

• #14

Re: 1980 25hp evinrude (no fire)

Nope, no fuses anywherenow get this... This morning me and the wife gonna go fishing this morning. Before I put engine cover back I reached over and hit starter button. It fired right up, let run for few mins, killed it, started right back up. Got to lake, and would not start again....

 

fireman57

Captain

Joined

Aug 24, 2004

Messages

3,811

• Mar 1, 2013

• #15

Re: 1980 25hp evinrude (no fire)

Time to check all your wiring from the ignition switch all the way back to the solenoid. Did you ever check your ground wire as suggested and clean it good.

 

L

Lone Duck

Master Chief Petty Officer

Joined

Oct 17, 2007

Messages

868

• Mar 1, 2013

• #16

Re: 1980 25hp evinrude (no fire)

Yup !! You defiantly Have a loose connection or a faulty switch. Either ignition, kill, or tilt. When you removed the lower unit, was a ground strap removed or solenoid wires?

 

A

AlTn

Commander

Joined

Mar 9, 2010

Messages

2,813

• Mar 2, 2013

• #17

Re: 1980 25hp evinrude (no fire)

your plugwires could be grounding to the latch on the motor cover, or the motor cover is causing a wiring problem when it's in place

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Mar 2, 2013

• #18

Re: 1980 25hp evinrude (no fire)

Ni, I didnt take any wires loose, cept the hot wire on batt. The engine cover has foam insulation inside, and having problems with cover off to.

 

J

JBurks

Cadet

Joined

Feb 26, 2013

Messages

11

• Mar 2, 2013

• #19

Re: 1980 25hp evinrude (no fire)

Do you think a cracked startor could have anything to do with it??

 

L

Lone Duck

Master Chief Petty Officer

Joined

Oct 17, 2007

Messages

868

• Mar 2, 2013

• #20

Re: 1980 25hp evinrude (no fire)

JBurks said:

Ni, I didnt take any wires loose, cept the hot wire on batt. The engine cover has foam insulation inside, and having problems with cover off to.

Click to expand...

OK! That is enough guessing. Time to do some checks. First disconnect cable from control to engine. Then pull the spark plugs and jump across the small terminals on the solenoid to crank engine and check for spark and get back to us.