Merc 80hp Coil test? Cost?

[Bryan22]

I have a 1970's era, Mercury 800 series (80hp)<br />is there a way of checking the coil? Also, does anyone have an idea on cost to replace? <br /><br />I am not getting spark so the coil would be the logical thing to look at I would guess.....correct? Thanks!

 

[12Footer]

Re: Merc 80hp Coil test? Cost?

Yes, it is the first thing to check. you can switch two of them around, and see if missing spark goes with the same coil.<br />You can check for an open winding by using an ohmeter . You should get between 100 and 600ohms, from it's ground wire to it's other low-tension wire (accross it's coil).<br /><br />If the coil checks-out, next check would be trigger.If trigger pulse is good, coil is good, the switchbox is bad by process of elimination.<br />Anything else would manifest itself as no spark to all cylinders.

 

[12Footer]

Re: Merc 80hp Coil test? Cost?

I'm sorry. You asked about approximate cost...They are about 40 buks each. But look around your town for a used one (10-20buks each).<br /><br /> outboardparts.com,

 

[Bryan22]

Re: Merc 80hp Coil test? Cost?

Thank you 12Footer! any help is greatly appreciated. I do not have any spark at all, she just spins with not even a hic-cup, so I take it that is a switchbox problem.

 

[ledgefinder]

Re: Merc 80hp Coil test? Cost?

What year (or serial number) 80hp? The early '70s had a different ignition than the late '70s.

 

[Bryan22]

Re: Merc 80hp Coil test? Cost?

The serial # is 3148816, all help on this is GREATLY appreciated. There was no neglect or abuse on this motor so something must have just decided to "go" on it.<br />thank you

 

[Bryan22]

Re: Merc 80hp Coil test? Cost?

I have spark now! I touched up the contacts in the dist and on the rotor. BUT..... the motor still will not fire, as of yet?????any thoughts

 

[ledgefinder]

Re: Merc 80hp Coil test? Cost?

1971 & I have same motor. You're ahead of me, though - mine ran perfectly last fall, but was no spark stone cold this Spring. I plan to try your "clean the contacts" approach once I clear up some space on the work rack.<br /><br />So you're getting spark, but it won't fire? Did you try some premix (fuel oil/mix) sprayed into the carb throats while cranking the starter? (WARNING: fire hazard could cause serious injury or death).