Hard starting 650 H

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Robin Hood
MC crawler
MC crawler
Posts: 1
Joined: Mon Sep 29, 2014 2:09 pm
Location: Pen Argyl Pa

Hard starting 650 H

Post by Robin Hood » Tue Sep 30, 2014 3:26 am

Would appreciate your thoughts on this problem. We have a 2001 model 650 H dozer that has developed a bad habit of starting hard. It never started hard in the coldest of weather before this spring. You have to crank it for quite a while (30 seconds) before it will light off. Seems as though the fuel leaks down after it sits for a while. We have replaced the fuel filters and the lift pump. There are no obvious leaks anywhere. I was wondering if there are any check valves that could be leaking.

Thanks
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Tigerhaze
350 crawler
350 crawler
Posts: 2278
Joined: Thu Jul 06, 2006 12:13 pm
Location: West-Central MO

Post by Tigerhaze » Tue Sep 30, 2014 2:36 pm

Maybe glow plugs are bad? I would assume it has them and maybe they burned out over time?
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment
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ja600
40C crawler
40C crawler
Posts: 11
Joined: Fri Sep 12, 2014 4:38 pm
Location: Corydon, In

Post by ja600 » Tue Sep 30, 2014 6:12 pm

Does it blow white smoke after starting? Injectors maybe bad. Sounds like a fuel issue in any case.
Machinist by trade, farmer by blood.
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