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Old 09-28-2022, 06:34 PM   #1
Mini-Skoolie
 
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Join Date: Jun 2022
Location: Wisconsin
Posts: 17
Year: 2003
Coachwork: chevy
Chassis: buss
Engine: 6.5 disele
Rated Cap: na
disele buss wont. sugeestions

hey group. so was out at the buss . trying to pack for a trip. So its a disele and i let it warm up like a normal.usualy have too wait to start lightto go off. After it goes I go to crack it and it just rolls over and wont start. I hooked up the battey to and the battery is at 75% charged. Not sure whats going on. if im not letting it warm up enough or plugs r bad or alternator etc.

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Old 09-29-2022, 06:50 AM   #2
Bus Nut
 
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Join Date: Sep 2019
Location: Bly Oregon
Posts: 451
Year: 1986
Coachwork: Crown
Chassis: Supercoach
Engine: Cummins 350 big cam
Rated Cap: 86 passengers?
How long since you previously started the bus? I found that after 3 weeks of being out of town my Crown was slow to start. It doesn't have glow plugs, but I figured the fuel line maybe lost some pressure. The next start was much better. My 93 F250 and the HUMVEE are slow to start when not started for a while. I would suggest charging up the batteries before more attempts to start. Weak batteries can smoke a starter. Also check the battery connections. I also had problems with that.
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Old 09-29-2022, 12:44 PM   #3
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Location: E Central Tejas
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Year: 1998
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Chassis: IH 3800, 8 window
Engine: T444E w/ Spicer 5-speed MT
Rated Cap: I prefer broad-brims hats
What HE just said. Especially:
For me, where the batteries' ground-strap was bolted to the rail proved to be my eclectic electrical culprit's hideout!
Durned villainous voltage varmints.
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Old 09-29-2022, 04:11 PM   #4
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Join Date: Sep 2017
Location: Swansboro,NC
Posts: 2,542
Year: 86
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Chassis: Ford B700
Engine: 8.2
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does your fuel filter have the hand primer pump on top of the filter housing?
my 2000 duramax had a problem with that primer pump seal bad and it would lose prime.
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Old 09-29-2022, 11:52 PM   #5
Bus Nut
 
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Join Date: Sep 2019
Location: Northern Virginia
Posts: 563
Year: 2001
Coachwork: Thomas
Chassis: MVP ER
Engine: CAT 3126
Check the fuel lift pump, should be on the framerail under the driver's door. They like to fail on the old 6.5s. They can sometimes start with failed lift pumps if you crank on them enough and this puts a lot of stress on the injection pump. That sucker is a few thousand now, so you should check the lift pump as a preventative maintenance item anyway.

Something else to consider is the FSD, the little controller for the injection pump. They had a horrible failure rate, especially if left mounted on the side of the injection pump as stock. Most engines have been fitted with remotely mounted FSDs on a heat sink.
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Old 10-01-2022, 07:44 PM   #6
Mini-Skoolie
 
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Join Date: Jun 2022
Location: Wisconsin
Posts: 17
Year: 2003
Coachwork: chevy
Chassis: buss
Engine: 6.5 disele
Rated Cap: na
thanks everyone. I'm not good at fiding the problems are check those out. but gonna have a shop look at it and go from there. I started it the other after a full charge. Seems to be starting fine now such a weird problem.
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