problem starting 1990 175 johnson crossflow

[gloveman]

can anyone help ? i recently purchased a used 1990 175 johnson. looks real clean and compression was an even 90 for all six cylinders. i got it started briefly on the stand. while i was in process of making adjustments i couldn't get the motor to spin fast enough to restart.i though it was the starter but i replaced it with anohter and had the same problem. with two or more plugs out it spins fine with all the plugs in it has a very hard time turning the fly wheel. dead battery bad cables not the problem. any suggestions ...thanks

 

[ob]

Re: problem starting 1990 175 johnson crossflow

Remove, clean , and tighten the two large cables on both sides of the starter solenoid as well as the engine ground lugs and see if that helps.

 

[Silvertip]

Re: problem starting 1990 175 johnson crossflow

When troubleshooting a slow turning engine always make sure you have a good battery as the very first check. Almost new batteries can develop a bad cell. Connecting a charger may show its charged and a voltage check may show 12.6 volts. Its the ability to deliver current that counts. One bad cell kills that ability. Swap a "known good" battery or at least check the existing battery with a hydrometer. If the battery is indeed good, then move to connections, cables, solenoid, then lastly, the starter. Try jumping the starter directly from the battery to eliminate the solenoid.

 

[Rosati]

Re: problem starting 1990 175 johnson crossflow

you can also check your battery by hooking up a volt meter to the battery and perform a load test. The volts shold drop to about 10.5 and bounce back up. If not, battery may have a dead cell.

 

[gloveman]

Re: problem starting 1990 175 johnson crossflow

thank you