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So it was taken out last week and it died right at the LiveBait shop. Several attempts were made to start and it would start and then die. The owner did the compression test which showed 120s across but did not ground the cables so now it has 2 problems. There is a no spark condition on top of...
Ok so I don't know why I thought it was a Force but it is a Mercury 2 stroke 125hp
with the white oil container on the starboard side. I am waiting for pictures from my friend on this. But it is a Mercury 125 for sure. I tgough I saw Force by Mercury for some reason. Looks like the picture
I took the boat to a lake nearby today. The engine I rebuilt was the one with issues.
There was hardlyany gas coming on the transparent filter when squeezing the prime bulb. I took off the filter and it broke on one side but it was also nasty inside it looked like there was sand in it. I...
Sorry for the typos I thought I fixed it.
It's an 125HP model
I don't have any books on the 125HP. I do have the 120s books 1992 and the Clymer manual that covers a bunch of models from 1984-1999. But the 125HP is not really explained.
So I managed to fix 1990 dual 120s issueswith the help of...
So this is my friend's boat I am just helping, and yesterday he did the compression check. Safe to say he did not ground the leads and there is no spark to all 4 plugs.
I found a video on Youtube that shows step by step testing to determine which component needs replacement. Let me know if you...
Ok compression 120 across the 4 cyls.
Took the fuel pump off and the diaphragms are good. The check valves have the clear rings one showed a kink. The other one is flat. I could not see anything else wrong. When I squeeze the priming ball I get has on tye left bottom hose. The engine starts...
So we were at the bait dock and turned the motor off, when ready to go it would not start, pumped the prime ball and it started, revved it and it died pretty quick prime ball soft again. Repeated process same result. Can it be the pump? Thanks guys
Ok so both engines were at 32 BTDC put them at 28.
Now the rebuilt engine I managed to get to 800 on muffs.
The other one I cannot get bellow 1000
And it oscilates like crazy above that.
Maybe there's an air leak. I mean it is old. I did change the head gasket already.
Ok so cranking timing on Prestolite has to be set at 28 BTDC which I think I did. I will doublecheck tomorrow. And the 28 mark is the right one out of the 3.
Wanted to ask I set the cranking timimg at 28BTDC. Mine is a 1990 Force 120. I am going based on the book. Some have 30 but I think mine is at 28. Just double checking
Mine is Prestolite
Ok after adjusting the cables by the manual I started both engines I get water through the top little bolt that I will use for tail tell.
The problem is if I adjusted the idle screw below 1500 RPM(on the dash reading could be more or less) they both die.
So again there has to be an adjustment...
I want to add a tail tell to these engines. I read that you can add a fitting to the thermostat housing. That would probably be mandatory at this point.
Yeah my beef was the alarm. And when measuring temp it went up to 200 so I have to be careful. But when both engines did the same thing it had to be a functional issue not a repair mistake.
