Compression Test--45 , 45 and 45 on 85HP Force URGENT

[CraigO]

I am getting ready to purchase on line a used 85HP Force outboard to replace the outboard on my boat.<br /><br />I had the person do a compression check for me and he got values of 45, 45 and 45. I know the values should be around 125 to 130 per cyl. <br /><br />QUESTION: Is his values valid as he was turning the flywheel by hand (actually with a wrench on the flywheel nut)??<br /><br />Do you not get the proper values unless you hook starter up to a battery and turn over?<br /><br />and if so is the 45,45 45 a good sign as it is showing balance on on 3 cyl?<br /><br />Also, supposedly the only thing wrong this outboard is no spark? I hope this should be no problem as it should be real easy to take the CDI? sending units off of my old engine---this should be simple right???? I think it is close to the same year as my existing 1985 85 HP Force. Can one tell the year by the serial number?<br /><br />Please help--I may be making the purchase today

 

[wilde1j]

Re: Compression Test--45 , 45 and 45 on 85HP Force URGENT

No, Yes, Yes (but not valid)<br />?, ?, Yes

 

[Jango]

Re: Compression Test--45 , 45 and 45 on 85HP Force URGENT

The proper way to check compression is:<br />1. remove ALL plugs<br />2. Open throttle to WOT (OUT OF GEAR)<br />3. Check each cyc by cranking with Starter - be sure each plug wire is grounded to Block to avoid Elect. damage.<br /> Readings should be within 10% of each other and at least 120lbs for that motor.<br /> If you are going to change Power Packs and Coils, Be sure you use the SAME color. If they are currently BLUE, change to New Blue not Black.

 

[steelespike]

Re: Compression Test--45 , 45 and 45 on 85HP Force URGENT

Force is an orphan with no factory parts support.<br />Marginal performance and reliability.<br /> Why bother.

 

[Hooty]

Re: Compression Test--45 , 45 and 45 on 85HP Force URGENT

URGENT ??<br /><br />c/6<br /><br />Hooty