- Видео 20
- Просмотров 9 050
Casey S
Добавлен 4 апр 2021
1976 25 hp Evinrude rebuild - Air in fuel system
1976 25 hp Evinrude rebuild
- Air in fuel system - Gas line connector motor side - Oring dry and broken
Rebuild is almost done. Motor was found in pieces and almost scrap bought it as a project. Cleaned the good stuff up bought several pieces needing replacement. Went through the motor top to bottom. 2nd start after sitting a year started right up. We do have a prime issue not related to motor. Gas line - oring in the connector is cracked letting bits of air in the system causing the cough. Squeeze the primer bulb and she running perfect. Next video will be testing on lake at full speed. This is a great video to see what air in the gas system sounds like. Many things can happen to cause a ...
- Air in fuel system - Gas line connector motor side - Oring dry and broken
Rebuild is almost done. Motor was found in pieces and almost scrap bought it as a project. Cleaned the good stuff up bought several pieces needing replacement. Went through the motor top to bottom. 2nd start after sitting a year started right up. We do have a prime issue not related to motor. Gas line - oring in the connector is cracked letting bits of air in the system causing the cough. Squeeze the primer bulb and she running perfect. Next video will be testing on lake at full speed. This is a great video to see what air in the gas system sounds like. Many things can happen to cause a ...
Просмотров: 823
Видео
1981 Evinrude 25 HP
Просмотров 347Год назад
New project. Had no spark. After close inspection of the coils and wires, the wires rubbed down to bare wire and were shorting out. after wrapping with electrical tape. The motor started. Repaired the wires permanently after the video by cutting, stripping, soldering, heatshrink, and cover with wire sleeve to protect the wire from shorting out again. Carb and jets were soaked in seafoam top eng...
1975 25hp Evinrude- Tuned in
Просмотров 1583 года назад
Tuned it in with a multimeter, checked spark, ignition coils, cleaned carb, and set the low speed needle. Checked impeller, thermostat, put new spark plugs in, and changed lower unit oil. Motor has good compression 125/125. When the throttle plate closes all the way the engine dies. Like too much fuel - problem was a couple reed valves were open and not shutting.
1986 20 hp Mariner test run
Просмотров 3733 года назад
Took the 20 out on a test run. It ran great, had a full boat and we were going over 20 mph.
1975 15 hp Evinrude
Просмотров 1293 года назад
Had a fuel issue, bad fuel pump, missing orfice plug part 23, clogged exhaust too. Cleared exhaust, rebuilt carb put the orfice in and rebuilt the fuel pump. I had flipped the plastic piece in the pump that went to the carb and the engine ran then died and did not start back up, flipped that piece and it ran good.
1986 20 hp Mariner - After timing and carb adjustments
Просмотров 2 тыс.3 года назад
Did a timing adjustment, carb adjustments, cam, and throttle linkage adjustments.
1973 18 hp Evinrude- Fuel pump test
Просмотров 1153 года назад
Running the motor with the tank elevated and then lowered it to see if the pump had issues. Ran the same both locations.
1973 18 hp Evinrude - Swapped condensers and were running great
Просмотров 463 года назад
Put a Noew OEM tune up kit in this evinrude, 5th trip it started to miss, adjusted points and still had issues, swapped coils and problem did not move from the cylinder that was missing, swapped condensers and the problem moved to the bottom cylinder. Determined the new condensers were trash. Put old ones in and we are working great. Had to cut video short, my water bucket was inadequate and di...
1973 Evinrude 18 hp - Swapped to old points and condensers
Просмотров 1293 года назад
Put old points back in, put old condenser on the cylinder that was missing. Ran better but needs fine tuning now. OEM parts are worth the price. Had aftermarket tune up kit in and 5th trip fishing the condenser died when it got hot.
You just gave me an idea. I have the same exact evinrude. 1973 18. Fat blue spark when I turn fly wheel just a 1/8 turn. I crank cold and run engine and it runs great. I try to recrank when warm/ hot and it’s stubborn (!!!) about recranking.
Yes that is correct. On this engine the lean sneeze is happening due to a damaged oring in the fuel line connector and air was getting in at the connection and gas was leaking out. Causing a lean condition.
Air fuel mixture is to lean
Yeah this is a "lean sneeze". But what's described with air getting in to the line could cause this because air getting in would be nature make it too lean.
It was a air leak issssue. Ended up doing several things. Replaced baffle gasket while there replaced lower crankshaft seal and o rings. Re-Torqued power head main bolts. Did the baffle and exhaust gaskets. Some of the cover gaskets. Carb cleaned it. Did a fuel pump rebuild. Put neew reeds in. Motor ran great after and sold it awhile ago.
What was the issue
Yes
Is this a two stroke motor
So did you figure out what the issue was?
Yes. It was out of timing. Also adjusted the air fuel and it ran the way it should. It also had a float that was getting a very small amount of gas in it causing more weird problems. It hits 25 fully loaded 14 ft aluminum now
@caseys1182 awesome. thank you. I appreciate the response. I have the same issues with mine at the moment.
@@caseys1182so where is the fuel/air screw on carb?
The screw for air fuel on these is on front of carb at the top of the air intake hole it's inset screw. If I'm remembering correctly it set factory at 2 1/2 turn out after seating it all the way in. If it's popping and coughing adjust richer until it smooths out. 1/4 turn give it 30 seconds or so to adjust flow. It's not an instant change. If it's too rich it will be hard to keep running, adjust lean until it starts popping and coughing and 1/4 turn back until no popping and coughing
@@caseys1182 so do you screw in or screw out if it’s running to rich and won’t idle? I also have a dial on the choke that I can adjust also don’t know much about these motors any knowledge help’s thanks
Me too need more info on this motors sync
timing gun and instructions
Scroll down and there are some pictures of instructions. Thats how i did it. 1987 20 hp mercury timing adjustment - Iboats Forums forums.iboats.com/threads/1987-20-hp-mercury-timing-adjustment.492185/
hi you still own this engine now?
Yes. Its my favorite one to run.
These are great engines and can not be replace with today's big heavy four strokes. Take good care of it and it will last a life time
What’s the easiest way to change these?
Hey man I have a question how did you set the timing in your motor trying to fix mine and just can’t seem to get it to run
timing gun and instructions
sounds good!