743b won't start. need advice.

[Tazza]

The machine refused to start in the middle of a project over week ago. I think the starter burned up because it was so hot and doing what it did before the first rebuild. The mech. said he'd get it rebuilt for me again. So he did that and put it in and cranked real fast like it should but just wouldn't start...so close but just wouldn't fire up. Then it did with a squirt of ether. It idled about 30 min. then I shut it off and restarted it twice instantly, without preheat-even though it was warm out. Before, even when warm from running it still required some preheat... I'm horrible with motors so I told him to do/check whatever could be possible problems. The batt was fine & he said he'd replace the fuel filter monday. I found him out there cussing the design of the filter changing it out...which kind of gets me worried since he's very soft-spoken. When I got back and looked at it there was fuel leaking out all over and that glass piece had broken. He hadn't realized it but had tried to start it and not realized whether pressure broke it or what-and didn't bother to look I guess. So 3 days to get that part..after market metal...he's paying for it of course. He felt really bad about all this and is getting frustrated too on why its acting like this. So this is causing me a lot of aggravation because it'll be down over 2 weeks and is costing me $!! I just felt like venting so thanks for listening. It's been such a good machine but I really hope this solves why it's so hard starting.

Make sure you bleed the fuel system, open the screw on the injector pump and squeeze the hand primer. CLose the screw and see if it starts better.
It should never need ether to start, glow plugs should be enough..... Are they getting power?

 

[idwoodhauler]

Make sure you bleed the fuel system, open the screw on the injector pump and squeeze the hand primer. CLose the screw and see if it starts better.
It should never need ether to start, glow plugs should be enough..... Are they getting power?

The fuel filter seems to have done the trick. The new 'globe' is metal. First time I started it I preheated for about 20 sec. w/glow plugs and it fired right up. Haven't had to crank it for more than 1-2 sec. to start it. Makes me wonder how long that was bad and if the old glass globe had anything to do with it. It's never started this easy since I've had it. I hope it lasts. Will the aftermarket metal piece on the fuel filter have any affect on it? Do I need to check it for water? It runs like a top, idles fine etc. My back was really hurting from having the loader down. Don't know how I ever lived without it.

 

[Tazza]

The fuel filter seems to have done the trick. The new 'globe' is metal. First time I started it I preheated for about 20 sec. w/glow plugs and it fired right up. Haven't had to crank it for more than 1-2 sec. to start it. Makes me wonder how long that was bad and if the old glass globe had anything to do with it. It's never started this easy since I've had it. I hope it lasts. Will the aftermarket metal piece on the fuel filter have any affect on it? Do I need to check it for water? It runs like a top, idles fine etc. My back was really hurting from having the loader down. Don't know how I ever lived without it.

I don't see why metal would be a problem. The glass is easier to tell if you have water in there, but newer machines use metal spin on filters, you can't see water in them.
Glad its running well. The V1702 engines did like a good glow to get going. Mine loves a 20 second glow too, it has about 300-400 hours on a re-co engine too.