25hp won't start

[bigcontry]

I have a 1980 25hp evinrude. The only way I can get it to start. If I Advanced the timing 1" or more past the two marks on cam throttle control. Some times it starts and some times it won't. What I have done to it so far Rebuilt the carburetor fuel pump To new coils Compression check bottom cylinder 96 psi top cylinder 100 PSI. It's getting spark.

 

[F_R]

Correct starting position is put it in neutral, then advance throttle as far as it will go (in neutral).

 

[bigcontry]

So start it In full throttle.

 

[boobie]

If everything is correct it won't go to full throttle in neutral.

 

[racerone]

There should be a stop / interlock to limit throttle in neutral.

 

[bigcontry]

Correct it will not go to full throttle in neutral. Unless I Disconnect the cable for the gear selector.

 

[F_R]

Throttle as far as it will go in neutral.

 

[oldboat1]

Measure spark.

Saying you rebuilt the carb and the fuel pump?

 

[bigcontry]

Yes. And all new fuel lines.