1985 force 125 dead miss

[Shifflett115]

hey guys , i have a 1985 force 125 that number 4 cylinder is not firing , it has 120 psi on compression test , it feels like spark , what should i look at first , i replaced plugs that didnt help thanks guys

 

[baxtr]

Re: 1985 force 125 dead miss

Feels like spark??? verify visually that you have spark, put a bolt in the plug wire boot and hold it with a pair of insulated pliers so the bolt is about 3/8 inch away from a good ground point on the block. You should see a good spark, if you have to get the bolt closer to achieve spark, it may not be strong enough for ignition

 

[Shifflett115]

Re: 1985 force 125 dead miss

well i did your test andi have to hold the bolt to the ground to get a spark , dose that mean i have a bad coil?

 

[baxtr]

Re: 1985 force 125 dead miss

you could switch coils around and see if the missing spark follows the coil first. if so, then yes

 

[Kajun37]

Re: 1985 force 125 dead miss

shift....go to autozone and buy a $10 spark tester...much easier and more accurate because you need that spark to jump atleast 7/16ths.......i had a motor that i was getting spark on all wires...but one of them wasnt quite jumping 7/16ths....that coil was bad.

 

[JDP]

Re: 1985 force 125 dead miss

I had the same problem on my 86 125. It ended up being the CD module. Those aren't cheap but if you are willing to wait you can get one for around 90 bucks.