1989 Evinrude 175 dies when quickstart turns off

[guitman32]

Motor is a 1989 175 crossflow

Motor idles just fine in quickstart, but once it gets up to temp its dies once the power pack pulls the timing (consistently dies right after the 5 seconds of automatic timing advance).

I can "catch" the motor if I advance the throttle (no opening of the carb butterflys - I just leave a lot of slack in the cam so it doesnt depress the butterfly roller) to advance the timing, but it seems like I have to advance it (specifically, the timer base lever) quite a bit past where stable idle is with quickstart on in order to keep her going.

If it set the idle timing to where it should be off of quickstart (normal temp), then when quickstart is active it idles at around 1600 and it seems the timing is too far advanced.

Any ideas or suggestions on where to begin? PS. I have a manual and am going to try to re-link and sync tonight.

 

[hidef]

Re: 1989 Evinrude 175 dies when quickstart turns off

Make sure you disable the quickstart before setting the timing. and redoing the sync and link. Once you get it timed correctly then re-enable the quickstart.

 

[boobie]

Re: 1989 Evinrude 175 dies when quickstart turns off

Just a thought. If you have a 35 amp charging system on this mtr you could have some probs with the flywheel center magnet. May have slipped.

 

[emdsapmgr]

Re: 1989 Evinrude 175 dies when quickstart turns off

Check the stator voltage output to see if it's low. It may not have enough voltage at normal idle (low) rpm's (after quickstart ends) to sustain the ignition firing. The factory manual condemns the stator if it outputs less than 200 volts when cranking. (as measured with a special "peak-reading" voltmeter) Weak flywheel magnets can also contribute to this problem.

 

[guitman32]

Re: 1989 Evinrude 175 dies when quickstart turns off

Thanks for the replies, I appreciate the support.

boobie - So if I were to have problems with the flywheel center magnet, what would I look for? The flywheel was verified as working for at least 25hrs before I swapped powerheads...could it be related to how the flywheel was mounted? FYI the key is intact and engaged on the flywheel.

emdsapmgr - Regarding the stator output voltage, again as above I swapped in a new CDI stator and was verified as working fine before I swapped powerheads. Either way I will check stator output voltage again and report back. Is there a recommended idle stator output voltage, or should that be around the same as the cranking voltage (200volts)?


To complicate matters, the timing pointer on the "new" powerhead is broken, so I have no idea where to measure the timing from. Can I just set cylinder #1 at TDC and wherever the TDC mark on the flywheel is I will just mark the powerhead somehow to keep this spot...or do I have to perform the whole Timing Pointer Alignment procedure?

 

[boobie]

Re: 1989 Evinrude 175 dies when quickstart turns off

If it is a 35 amp system the center magnets were known to slip back in those days or else just get loose. You'd have to pull the flywheel to check this. CDI Electronics.com has some charts on the correct position of the center magnet in relation to the flywheel key.

 

[guitman32]

Re: 1989 Evinrude 175 dies when quickstart turns off

I do have the 35amp system, so I'll check it out and report back.