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Old 09-29-2016, 07:51 PM   #1
Mini-Skoolie
 
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HELP! 5.9l Cummins Turns strong won't Start! Tried it all-

Hey all-

I've scoured the forums here and everywhere and yet the mystery plagues me...any insight is much appreciated!

I have a '99 BlueBird TC1000 with Cummins 5.9l

Symptom: When first bought this bus started after 2 seconds Everytime. After letting it sit for 7 days or so and working on some wiring (removing the wheel chair lift and putting in Solar bank) I cannot get her to catch! Uncanny. I found a mystery vampire draw that discharged the batteries, recharged them and nothing. Started fine before.

Note: after wheel chair lift and back door buzzer were removed the bus started fine, leaving me to assume it isn't an errant safety wire from these two. Also seems unlikely because the starter is turning over strong and fuel is getting to injectors.

What I've tried: Replaced starter batteries. I have probably 3200 CC now so amps are good. Cleaned all contacts. Cleaned and checked main ground from starter batteries. Cleaned and checked all connections on starter. Replaced fuel filter. Bled lines to injectors and one injector doesn't seem to be receiving fuel. Others do. Solar bank and starter bank have no common connections. Checked fuses that I could find. Tried shifting in and out of Neutral.

What the hell!? It turns over super strong but no combustion. When replacing batteries I arced with a wrench from the Master Switch to a fan housing. Did this trigger something? I checked any fuses I could find up under the headlight housing. Is this one apparently clogged injector causing the whole system to fail? Seems unlikely. Have I not bled all the air out from the fuel filter exchange....although these problems originated before changing the filter.

I was just about to embark on a maiden voyage and now I'm aground....

Thanks for any help you guys and gals can provide-
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Old 09-29-2016, 08:03 PM   #2
Mini-Skoolie
 
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Also, I guess I can't be sure the injector is clogged. It simply doesn't fizzle air and diesel like the others when cracked. Maybe more air in the line? The old fuel filter was pretty dirty with a bit of grime at the bottom of the bowl. Whats a quicker way to bleed air before the injectors? I tested the fuel lift pump and its flowing strong.
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Old 09-29-2016, 08:21 PM   #3
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did you somehow knock a wire losse on the fuel solenoid that allows fuelt to go to the rail?

if that engine has a computer, its possible the short circuit / arc damaged it..

check all of your chassis fuses... its possiuble you popped a fuse or 2 with that arc...
-Christopher
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Old 09-29-2016, 08:58 PM   #4
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There are fuses under a cover on top of the instrument panel, checked those?

The fuel filter can on the engine is full? If not;

Key to start for an instant, leaving in run position until pump stops, (you can hear it) do this several times.
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Old 09-29-2016, 09:35 PM   #5
Mini-Skoolie
 
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Thanks Chris; I'll take a dive for that fuel rail solenoid tomorrow, the computer is a possibility although there aren't any error codes being presented so I think unlikely?, and I've checked the fuses that I know about.... although apparently Don and Mary on 2Kool4Skool know of a secret squirrel panel on the dash that I haven't checked. I hope when I pop that sucker there is a beautiful little burnt fuse. Otherwise, how does one test to see if the computer is corrupted I wonder?
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Old 09-29-2016, 09:37 PM   #6
Mini-Skoolie
 
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Don and Mary I'm really gunning for that fuse panel I hope something is nice and crisp under there! I knew there had to be more around the dash somewhere....as for the fuel filter I filled it with fresh diesel deliciously siphoned from a hose out of the tank before reinstalling the new element.
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Old 09-29-2016, 09:48 PM   #7
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No blown fuses...dammit.
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Old 09-29-2016, 10:05 PM   #8
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Quote:
Originally Posted by acorncracker View Post
Replaced fuel filter. Bled lines to injectors and one injector doesn't seem to be receiving fuel. -
i think your problem is there. those pumps cant pump air. my money is on air in the fuel line.

have you checked the grid heater is getting voltage?

bleed the lines until your getting fuel on all of them.

good luck!
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Old 09-29-2016, 10:10 PM   #9
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does that have a manual primer pump? I know when i changed my filter.. i filled it up with fuel but still had to pump and pump on that manual pump tp get the main pump all primed up...

when i did, and you can feel it go from pumping easy to pumping hard.. thats when you know you have fuel.. my bus fired right up after I got re-primed.

-Christopher
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Old 09-29-2016, 10:16 PM   #10
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I recently changed one of the fuel filters and didn't fill it, the "bump the starter" routine had to be done several times before she fired up.
Filling the filter is not the best idea, chance of contamination is kinda high especially siphoning from the tank, years and years of gunk.

Don't grind on it too long and wind up with a bad starter too!
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