| Author |
Message |
Gelecamion (Gelecamion) (66.1.43.112)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 19, 2004 - 8:31 pm: | |
hi i got the bateris figure out it is a negative ground !!!! thank you for all the ideas and comments
I got the started rebuid then still it does not want to start from the push botton but i bridge the selenoid and it cranks up >
but i will not start !!!
then i give it a shot of wd 40 and the engine starts onlu for a couple of seconds until de wd 40 is consumed or burn !!!
i check the two filters and they have diesel the thank is full full of diesel but all this diesel is four years old
WHAT IS THE NEXT STEP!!! PLEASE HELP
Sould i let all that diecel to the trash and put new diesel in the tank and sould i change all those filter now or what is the folloging steps i called a diesel mechanic here in tucson and he wanted 200.00 us dollars to go and see it if he spent i minute or 3 hours and i do not think that is really fear so im asking you fellow busnuts to help me thank you !!!
when mine bus runs i will be roaming the west coast nm,nv,az,ca or,tx
and im goint to go down to mexico baja california an sonora for now
THYANK YOU FOR ALL THE HELP
MY EMAIL IS northstarazul@yahoo.com
thank you again Gerardo |
John Rigby (24.174.238.253)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 19, 2004 - 9:14 pm: | |
Gee
As you stand in front of the engine, look for the 6" pipe that comes from up above(the air filters) goes down to the blower that is right in front of you. On this pipe half way up there is a saftey shut off that has a magnet, and could be triped.If the little arm is poiting down it has tripped and needs resetting. If its pointing towards you its ok.
Do you have a maintenace anual, you need one ( Tekebird has then)
John |
TWO DOGS (63.188.224.96)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 19, 2004 - 9:52 pm: | |
electric fuel valve |
Gelecamion (Gelecamion) (66.1.43.112)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 20, 2004 - 11:13 am: | |
the safety shut of valve is open I have aready ck that !!
where is the electric fuel valve i do have the manual but it is really anbiguos about all that do you know if they have a guide to work on this busses more easy to understand ? |
mel4104 (208.181.100.9)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 20, 2004 - 11:30 am: | |
you have stated that you are in Tucson. then try getting a hold of Hector Castillo at pacific deisel of AZ.his phone # is 882-9916 his shop is at 20E Lester. he realy knows gm buses and has a fellow that works with him that has a portable repair unit and if you get either one of them then you will get your moneys worth, by the sound of it you are just getting in to this so the money you spend be sure that you have a list of question to ask and not just get it running. they could be a great help to you, they have alway give me the right answer so i go there first for parts and info. mel 4104 |
Juan Navarro (Jnavarro) (205.216.149.102)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 20, 2004 - 11:54 am: | |
Hey Gerardo,
How are you doing. Good to hear that you're getting close to get that bus running. From what you tell us, I think the electric fuel valve is not energizing. Try this: have someone in the bus turn on and off the diesel switch by the driver while you are looking at the engine and listening for the "click" of the fuel valve. If you hear the click, with the switch on, then bridge the solenoid at the starter. If you do not hear the click, then you will need to "jump" the fuel valve with 12 volts and crank the engine.
Give me a call, and check out my profile by clicking my name above, I have a picture of my bus there.
Juan 1953 PD4104-148 "Hound
909 283 3924
Juan |
mel 4104 (208.181.100.27)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 21, 2004 - 10:18 am: | |
Hi Juan , where do you find an electric fuel valve on a 4104 are you talking about the skinner valve that controls the rack????? |
Gelecamion (Gelecamion) (66.1.43.112)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 21, 2004 - 7:05 pm: | |
juan can you take a picture or discrive that energising valve so i can do i do hear some cliks here and there but not have the know how yet.
and that is it i am taking a mechanic diesel there on saturday to see what is the deal with this camion i want it rolling in the hywas of arizona nm and mexico why not !!!!
as soon as i can i will take a pictuere of the bus i do not want a pictures where is parked i want the open hyway |
TWO DOGS (63.185.81.18)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 21, 2004 - 7:15 pm: | |
there is a wire running from your keyswitch to the fuel solienoid...has to be hot when the switch is turned on...I'd check fuses..then.....find that wire under the panel & see if it's hot when you turn the switch on..get in your book & find out where back there the fuel solinoid valve is...see if it is getting elec. it should be between the fuel line from tank & where it goes into the engine..it will have a 12 volt wire running to it... |
Juan Navarro (Jnavarro) (64.171.76.188)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 22, 2004 - 2:02 am: | |
Gerardo,
I was looking at my bus today and reading Da-Book. There is a solenoid valve on the firewall called the magnet valve and the book calls it the engine stop valve. After analyzing its operation this is what I came up with. this valve controls an air cylinder on the governor that moves the fuel control lever. with the valve energized, driver's switch on you should hear a click on the firewall towards right off center. this is where it gets confusing, the "on" position of the valve opens the air line to atmosphere so that the air cylinder controlling the fuel lever does not have any air pressure and moves the lever to full fuel. when the driver's switch is turned to "off" the valve allows air pressure to the air cylinder moving the lever, and fuel racks to the no fuel position.
Since your bus has not started and I am assuming that there is no air in the system, that the driver's switch will have no effect on the fuel flow to the engine because the normal position of the control cylinder without air pressure is the full fuel or start condition.
once the engine builds up air pressure, then the engine stop solenoid valve must be energized for the engine to continue running.
On my bus, there is a little manual valve on the air line to the air cylinder, by opening this little valve, I think the air cylinder should keep the fuel lever at the full fuel, or start position.
Be Careful to close the little manual valve if your bus has it because if you leave it open then you will not be able to stop the engine unless you energize the emergency stop switch.
Sorry if this is confusing and please any one out there, let me know if this is correct
Gerardo I will call you towards the week end to see how you are doing
Cheers,
Juan
PD 4104 |
Jim-Bob (12.46.52.74)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 22, 2004 - 4:28 pm: | |
Juan, your description is close. The electric engine stop valve is normally open. When you switch the "Ignition" ON, the valve closes. When a 4104 with no air pressure starts, it can not be shut down until it builds up air (Unless you put it in gear & stall it).
If you start the engine with the "Ignition" or Run switch OFF, or switch it off just after starting, the engine will run until it builds up about 25lbs of air, then it will slowly stop as the cylinder head mounted air cylinder pushes the rack closed. Sounds like it's running out of fuel.
The hand valve at the cylinder head should be OPEN unless you are over riding the stop function. With it closed, you can not shut off the engine with the switch.
Remember, there is also a switch panel in the engine compartment at the top on the right side. The switches:
1. Turn on/off the compartment lights.
2. Crank the engine from the rear (If the switch at the dashboard is ON)
3. Turns the engine off if fwd switch is on
4. Disables the front starter switch if you are working on the engine.
If you have air and the rear Engine Run/Stop switch is OFF, the engine will crank from the front but will not start! Guess how I know this!
Bottom line, crank the engine. With no built up air, it should start & run for at least a minute. (Till it makes air) If it won't do that, then check that you have fuel pressure BETWEEN the fuel pump & the cylinder head. If you crack open the connection where the line meets the head, fuel should come out when you crank the engine.
If it runs then slowly peters out, the STOP system is working, but maybe your switches or stop valve have a problem. |