1969 Evinrude 115hp no top end (way more info, still need help)

[1968pontiacgto]

Orig. post: Ok guys need some help! Engine runs fine and revs past 5000rpm in neutral but put it in forward and its got nothing, starts bogging down like the choke is stuck on (its not though). Where should I start looking? Its got brand new marine plugs (so there is no gap to set). First time out it got up to about 35mph and still had more??? Any ideas, maybe a hole in the fuel pump? Its been sitting 8 years before I got it, help please!!!


OK, heres the update! I took the fuel pump apart and there is no hole in the diaphram, put it all back together then took the carbs off. No need to rebuild them as someone was already in there not too long ago. New rubber gaskets new seat and valve, and nothing from what I could tell was clogging any jets. Blew them out with my compressor anyway then reassembled and reinstalled them. Then moved onto the compression test, Cyl 1: 127, Cyl 2: 125, Cyl 3: 135, Cyl 4 131 all seam to be close to each other. Some other info there looks to be a fairly new Wabash Pulse Pack on it, the electric choke solenoid is electrically disconnected, there is no temp light cause someone installed a tap on the top of Cyl 1 and added a water pressure gauge (I could also use it as a tell tail **** stream if I wanted) question is what should this read for good water pressure? Also checked the spark gap all 4 cyl's and its reading .353 inchs with a blue spark.

All seams to check out, but I am loosing power at top end still??? Help please...

 

[countvlad]

Re: 1969 Evinrude 115hp no top end (way more info, still need help)

Orig. post: Ok guys need some help! Engine runs fine and revs past 5000rpm in neutral but put it in forward and its got nothing, starts bogging down like the choke is stuck on (its not though). Where should I start looking? Its got brand new marine plugs (so there is no gap to set). First time out it got up to about 35mph and still had more??? Any ideas, maybe a hole in the fuel pump? Its been sitting 8 years before I got it, help please!!!


OK, heres the update! I took the fuel pump apart and there is no hole in the diaphram, put it all back together then took the carbs off. No need to rebuild them as someone was already in there not too long ago. New rubber gaskets new seat and valve, and nothing from what I could tell was clogging any jets. Blew them out with my compressor anyway then reassembled and reinstalled them. Then moved onto the compression test, Cyl 1: 127, Cyl 2: 125, Cyl 3: 135, Cyl 4 131 all seam to be close to each other. Some other info there looks to be a fairly new Wabash Pulse Pack on it, the electric choke solenoid is electrically disconnected, there is no temp light cause someone installed a tap on the top of Cyl 1 and added a water pressure gauge (I could also use it as a tell tail **** stream if I wanted) question is what should this read for good water pressure? Also checked the spark gap all 4 cyl's and its reading .353 inchs with a blue spark.

All seams to check out, but I am loosing power at top end still??? Help please...

rev in neutral on muffs doesnt really matter.. usually the motor needs do be under load to spot problems....

get a timing light and check the timing .....

do you have a fuel filter?

 

[1968pontiacgto]

Re: 1969 Evinrude 115hp no top end (way more info, still need help)

Checked the fuel filter as well, just broke down the entire ignition system and found a screw that was supposed to be holding the wire down on the ignition pickup sensor to be free floating were the reverse cut off spring sits, I am hoping this is the issue now. Just replaced all the spark plug wires and I am going to bold it all back together now to see if its any better. There is really nothing else left to check, I have done it all that I am aware of!

Again thanks for the help guys, I am still racking my brain though,
Damian

 

[1968pontiacgto]

Re: 1969 Evinrude 115hp no top end (way more info, still need help)

Come to find out it must have been the screw lodged in the return spring killing the motor at top end. Took it out today and it ran great!

Thanks for all the help!
Damian