Generator won't start

[Wotname]

^^ I have used old sets of feeler gauges as 'shims' in that application, a bit rough maybe but works for me

[newhaul]

Originally Posted by Wotname

^^ I have used old sets of feeler gauges as 'shims' in that application, a bit rough maybe but works for me

Yep already dug out a couple sets for tomorrow.
One thing I forgot to mention is it wouldn't fire on ether either .
Old trucker here

[Khaos13]

A few years ago I had a no start generator issue. Cranked and cranked but no start. I decided to let it go for a while and just ran the other gen. Big mistake. The hydro lift muffler had filled with seawater and it ran back into the engine through the open exhaust valves. If it cranks for a while and doesn't start you MUST address the seawater backed up in the muffler. This was a very expensive lesson.

The same is true for a propulsion engine.

[newhaul]

Originally Posted by Khaos13

A few years ago I had a no start generator issue. Cranked and cranked but no start. I decided to let it go for a while and just ran the other gen. Big mistake. The hydro lift muffler had filled with seawater and it ran back into the engine through the open exhaust valves. If it cranks for a while and doesn't start you MUST address the seawater backed up in the muffler. This was a very expensive lesson.

The same is true for a propulsion engine.

Yes that is true of a seawater cooled engine however this particular unit is an air cooled portable diesel yanmar diesel generator

[Shaneesprit]

You tested the injector? How exactly?

[newhaul]

Originally Posted by Shaneesprit

You tested the injector? How exactly?

By removing the injector and hooking it back up to the fuel line and crank the engine over to observe the spray pattern just as the tech manual described it to be done .
Similar to how I check the Injectors for my trucks .

Found the compression to be just under minimum so waiting for new gasket set to replace the injector crush washer and head crush ring .
Already checked the rings and they are good

[Wotname]

Originally Posted by newhaul

By removing the injector and hooking it back up to the fuel line and crank the engine over to observe the spray pattern just as the tech manual described it to be done .
Similar to how I check the Injectors for my trucks .

Found the compression to be just under minimum so waiting for new gasket set to replace the injector crush washer and head crush ring .
Already checked the rings and they are good

The other DIY injector check it to observe if there is any small dribble of fuel after the injector has popped. This tells you if the non return valve is satisfactory.

[Perna]

I was going to suggest trying it on ether just to confirm it is a fueling problem. But you say it won't start on ether. This implies the fueling could be fine and the problem lies elsewhere

Good luck...

[newhaul]

Originally Posted by Perna

I was going to suggest trying it on ether just to confirm it is a fueling problem. But you say it won't start on ether. This implies the fueling could be fine and the problem lies elsewhere

Good luck...

Waiting on new copper crush head gasket and injector crush washer
Compression was a bit low . Yes rings were fine

[newhaul]

Well I may have the answer . when I was given this genny it needed a new injection pump. I was informed it was an l100 engine so I purchased accordingly now I find it's actually the l70 . the difference is l100 pump stroke 6.5mm and l70 is 6.0mm. So way over fueled. Waiting on response from yanmar now

Engine. Was mislabeled . someone changed the pull cord cover

[Chotu]

Originally Posted by newhaul

Well I may have the answer . when I was given this genny it needed a new injection pump. I was informed it was an l100 engine so I purchased accordingly now I find it's actually the l70 . the difference is l100 pump stroke 6.5mm and l70 is 6.0mm. So way over fueled. Waiting on response from yanmar now

Engine. Was mislabeled . someone changed to pull cord cover

I knew it. Wrong pump was the only logical problem.

[newhaul]

Originally Posted by Chotu

I knew it. Wrong pump was the only logical problem.

Had no clue untill I got the gasket set and the head ring was to big .

[Wotname]

Originally Posted by newhaul

Well I may have the answer . when I was given this genny it needed a new injection pump. I was informed it was an l100 engine so I purchased accordingly now I find it's actually the l70 . the difference is l100 pump stroke 6.5mm and l70 is 6.0mm. So way over fueled. Waiting on response from yanmar now

Engine. Was mislabeled . someone changed the pull cord cover

Don't you luv some previous owners
Good find and hopefully it will be a good outcome - eventually!

[Scubaseas]

If you spray a .5 second puff of starting fluid into the intake and try starting what happens?

Sounds like no fuel. Unlikely too much. It would start and race until the fuel was burned if there was too much. Even though it looks like it's bled out there may still be air bubbles in the lines that are not allowing enough pressure to build up to allow the injector to work properly.

I've been able to get stubborn older diesels going by running them on WD40 or carb cleaner intermittently sprayed into the intake. Try forcing some fuel into it until you can get it to fart or start and run on it's own. Don't try starting fluid for this, you need something a lot less volatile. Like spray lubricant or diesel in an aerosol or squirt bottle thinned with up to 30% K1 kero or 10% gasoline. Little bit will do yah.

[newhaul]

Originally Posted by Scubaseas

If you spray a .5 second puff of starting fluid into the intake and try starting what happens?

Sounds like no fuel. Unlikely too much. It would start and race until the fuel was burned if there was too much. Even though it looks like it's bled out there may still be air bubbles in the lines that are not allowing enough pressure to build up to allow the injector to work properly.

I've been able to get stubborn older diesels going by running them on WD40 or carb cleaner intermittently sprayed into the intake. Try forcing some fuel into it until you can get it to fart or start and run on it's own. Don't try starting fluid for this, you need something a lot less volatile. Like spray lubricant or diesel in an aerosol or squirt bottle thinned with up to 30% K1 kero or 10% gasoline. Little bit will do yah.

Its just to far over fueled as in about double what it should have .