Universal 25xp. No start.
- Thread starter charliec30
- Start date
Absolutely beautiful demonstration of exactly what's going on with your engine 
.
1. Is the one sound we hear in the background that of a high pitched electric fuel pump or other electrical device ? Maybe an exhaust fan ?
2. What is this device ?
3. I don't want to discuss my third guess until I hear back.
.1. Is the one sound we hear in the background that of a high pitched electric fuel pump or other electrical device ? Maybe an exhaust fan ?
2. What is this device ?
3. I don't want to discuss my third guess until I hear back.
I've only listened to you audio about 100 times so far.
Can you VERY CAREFULLY rotate your engine (in the forward direction) by hand about one full revolution and then try to start it again ? Report back.
The reason I say very carefully is that there is always the danger of the engine starting up even when turning by hand. A very low possibility if the engine is cold, but it's still there. Don't use glow plugs if your have them. If there are unloaders on the engine, unload the engine before doing this.
Can you VERY CAREFULLY rotate your engine (in the forward direction) by hand about one full revolution and then try to start it again ? Report back.
The reason I say very carefully is that there is always the danger of the engine starting up even when turning by hand. A very low possibility if the engine is cold, but it's still there. Don't use glow plugs if your have them. If there are unloaders on the engine, unload the engine before doing this.
Stuck or bad inertial engagement mechanism. Motor sounds fine but the “Bendix” isn’t engaging .Sometimes alight rap on the starter motor will get it to go, but probably best to pull the starter and fix it.
Thanks. Yes that is fuel pump making noise. Usually clicks like that.Absolutely beautiful demonstration of exactly what's going on with your engine
1. Is the one sound we hear in the background that of a high pitched electric fuel pump or other electrical device ? Maybe an exhaust fan ?
2. What is this device ?
View attachment 219945
3. I don't want to discuss my third guess until I hear back.
This picture is the water filter. No issues there.
I’ll try pulling starter. I wacked it a couple times while starting to no avail
CN I ask. How can I rotate the engine? Pipe wrench the pulley in the front?
Yeah, that was my third guess I didn't want to think about. Just wanted to make sure we'd covered all of the simple, cheap stuff associated with starter relay problems like electrical issues.
You can grip the engine pulley with both hands and keep a continuous force on it. Air will leak past the piston rings and it will slowly turn. Wear heavy gloves.
Maybe you can find you engine manual in the "downloads" section on this site. They've managed to accumulate just about everything. I know in my Yanmar manual the instructions for removing the starter pretty much read "remove the starter" but you may find something a little more helpful in yours.
Let us know what you find.
I didn't have an M25-XP, I had an M25. On mine, the starter did not have an inertial engagement mechanism, a.k.a., Bendix. The solenoid attached to the starter also actuated a lever that pushed the starter pinion out, and retracted it when the solenoid was no longer energized.
Don't bother, here they are;
Engines 101 - The BIGGEST & BEST collection of M25 Series Universal Engine Information on the Internet, plus some M35, too
This includes a link to the Critical Upgrades topic which has more engine information please read it too.Diesel Engine - c34.org
I wish I could say that will polish right out but I don't think that's the case here.
Perhaps you'll also want to eliminate the leak that caused the problem in the first place.
Yikes! There must be salt water leaking in there, no?
Don't throw away that starter! I know it looks bad, but I bet it can be cleaned up and made serviceable. Or, at least it's a good core.
Original starters are much better than the Chinese aftermarket ones, bu the way, so keep it and if you're not handy, try to find a rebuilder.
The starter solenoid is not engaging the motor, the motor is spinning but pinion has not been pushed out to contact the flywheel, replace the solenoid if it has one, it could be a rusted pinion shaft. try to move the pinion on the shaft, it should be easy movement.
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The big red + wire from the battery to the starter solonoid. Take a jumper cable and hook it onto the big wire on the starter. If you use a different battery than the battery in the boat you will have to jump the ground as well. This essentially by-passes and eliminated everything in the start circuit. It should spark when you hook up the cable then take off and crank the engine. If not 100% bad starter. If it cranks well then the solonoid is bad internally.
Finally got my starter and put it in however, my picture of wiring it is not clear. Does anyone have a photograph of how the battery and the other wires, orange, and red, connect to the starter?
The details you seek and more.
www.samarins.com
It says car. The starter motor is the same as the car. Just sitting in a boat.
Starter motor, starting system: how it works, problems, testing
How a car starting system works: system diagram, starter motor, solenoid, starter relay, neutral safety switch. Common starting system problems, testing
It says car. The starter motor is the same as the car. Just sitting in a boat.
This will help:
Universal Diesel Engine - Wiring Harness Upgrade - Marine How To
Engine Panel With Ammeter = Dangerous If your Universal engine panel looks like this, and has an ammeter, you are due for some critically important wiring upgrades. The factory wiring, with an ammeter in the panel, is
marinehowto.com