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Old 10-14-2015, 11:35 AM   #21
Bus Crazy
 
Join Date: Feb 2012
Location: Salt Lake City Utah
Posts: 1,330
Year: 2000
Chassis: Blue Bird
Engine: ISC 8.3
Thanks for the tip about the mechanical priming lever on the B engines. It's one more reason why I find working on Cummins engines so pleasant (compared to other engines): they're designed to make servicing easy. I'll have to look for a similar feature on my other engines.

I had a second look at the lift pump operation on my ISB this morning. You're right, it does energize the lift pump at key-on -- but it's on for only about half a second on my pickup ('98.5 Dodge with an '01 engine computer, I think). If I bump the starter I hear the lift pump come on again and it runs about 30 seconds. It could be different with the vocational ECM used in buses..?
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Old 10-14-2015, 01:22 PM   #22
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Join Date: May 2013
Location: Monrovia California
Posts: 120
Year: 1984
Coachwork: Blue Bird
Engine: 3208 turbo Cat
Rated Cap: 78
Hey Guys, this is good information, I have been afraid to replace the fuel filters on my 1984 BB CAT 3208, is it the same general Idea? can anybody here write something like Family wagon and Nat did? for a Cat engine.

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Old 10-14-2015, 01:25 PM   #23
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Location: Montana
Posts: 1,615
Year: 1995
Coachwork: Blue Bird
Chassis: All-American R/E
Engine: 8.3 Cummins
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3208 is the same. Pull the filter, fill it with fuel, put it on and fire it up. No need to do anything else. There should be a twist lock type hand primer as well, should you ever need it.
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Old 10-15-2015, 03:15 AM   #24
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Nat

Hey thanks again all of you I think my bus has the electronic engine you speak if because when I turn the key but let off the ignition too soon she acts likes she's flooded and then won't start for like 10 minutes does that make sense to u?
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Old 10-15-2015, 07:58 AM   #25
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okay my advice to add

I got very tired after pumping the stupid priming pump a million times so I-->

My fuel tank cap is solid and not vented, so this told me that I had a vent hose on the tank it's self

Using a tire pump I put the attachment to fill up air mattresses on the end and inserted into the vent hose, I pressurized tank to 8/10 pounds (do not go crazy with it and dont go higher it will do no good except spray everwhere)

I then cracked the lines at the filter and then at each injector and she fired right up

when done unscrew cap to let pressure out, be careful of spray if tank is full
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Old 10-15-2015, 11:16 AM   #26
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Join Date: Feb 2012
Location: Salt Lake City Utah
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Year: 2000
Chassis: Blue Bird
Engine: ISC 8.3
That's clever, bansil. Good idea.
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Old 10-15-2015, 01:25 PM   #27
Skoolie
 
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Join Date: May 2013
Location: Monrovia California
Posts: 120
Year: 1984
Coachwork: Blue Bird
Engine: 3208 turbo Cat
Rated Cap: 78
Quote:
Originally Posted by bansil View Post
okay my advice to add

I got very tired after pumping the stupid priming pump a million times so I-->

My fuel tank cap is solid and not vented, so this told me that I had a vent hose on the tank it's self

Using a tire pump I put the attachment to fill up air mattresses on the end and inserted into the vent hose, I pressurized tank to 8/10 pounds (do not go crazy with it and dont go higher it will do no good except spray everwhere)

I then cracked the lines at the filter and then at each injector and she fired right up

when done unscrew cap to let pressure out, be careful of spray if tank is full
Bansil, did you do this after changing fuel filters? also did you fill the new filter with diesel? .
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Old 10-15-2015, 03:22 PM   #28
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yes there are a few pics in my build,

it started with clogged fuel filters and turned into this after accidentally moving a wire

it was a week long craptastic involving a bad fuse, broken wire, extra solinoid and very sore thumbs from everything sitting for a week, all lines drained

http://www.skoolie.net/forums/f11/la...a-7581-33.html

Starts bottom of page 33 and ends on page 35

at least I learned from my adventure
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Old 10-15-2015, 03:58 PM   #29
Skoolie
 
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Bansil what year motor does LA tortuga have is it the same motor as mine? 97 5.9
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Old 10-15-2015, 04:10 PM   #30
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it is the basic 5.9 12 valve, it should be the same.
I think ours is 97 also, it used to say under my avatar...mmm
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