Wiring for injector pump bosch in-line SD25
Posted: Sun May 06, 2012 2:32 am
Hi Folks
Thanks for all the great information on this site.
I am bench testing a spare motor I have for my tiring SD25 (1997 pick-up) that I have had for about a year and a half......it is a great little truck with 480,000 km on it (with this engine).
The "new" motor has an in-line pump, the one in the truck now has a VE.
2 Questions:
1) wiring:
I am not clear on the functioning of the pump controller on the spare motor with the in-line IP. That may not? matter as much as my lack of wiring knowledge of same. The wiring harness was cut off on the far side of the 7 pin round plug/connector that is quite near the pump controller, so I have no idea where they went. Five of the seven wires go into the top of the pump controller body and two disappear behind it.
I don't know why it needs so many wires, but someone decided they were important I guess!
All I need to do now is to test the the running of the motor. Does anyone know which wires I would hook up to the battery to make the thing work...or will it work without any electrical input? I guess when I put it int he truck I will have to know where they all go and what they do, but for now.....
2) lift pump
Next related question is; I see in other posts here that there is a lift pump in the system...presumably in the tank....but I will have to put one somewhere else I guess for the test. Any ideas on a cheap pump that would do this little test job? Can I just give it gravity feed?
When I use the hand primer I get fuel coming out of the return line so fuel is now getting through the system.
I would post a picture of the wiring, but don't know how to do that on this forum.
Thanks so much
JBat
p.s ..FYI I have been running the current engine on straight veggie oil for the past year. I have run my past two VWs on it and also my sail boat. I have had no problems with anything veggie related that I know of over the past 5 years of doing this. Pretty simple and cheap conversion process that I designed and installed myself (two tank system). More later if anyone is interested.
Thanks for all the great information on this site.
I am bench testing a spare motor I have for my tiring SD25 (1997 pick-up) that I have had for about a year and a half......it is a great little truck with 480,000 km on it (with this engine).
The "new" motor has an in-line pump, the one in the truck now has a VE.
2 Questions:
1) wiring:
I am not clear on the functioning of the pump controller on the spare motor with the in-line IP. That may not? matter as much as my lack of wiring knowledge of same. The wiring harness was cut off on the far side of the 7 pin round plug/connector that is quite near the pump controller, so I have no idea where they went. Five of the seven wires go into the top of the pump controller body and two disappear behind it.
I don't know why it needs so many wires, but someone decided they were important I guess!
All I need to do now is to test the the running of the motor. Does anyone know which wires I would hook up to the battery to make the thing work...or will it work without any electrical input? I guess when I put it int he truck I will have to know where they all go and what they do, but for now.....
2) lift pump
Next related question is; I see in other posts here that there is a lift pump in the system...presumably in the tank....but I will have to put one somewhere else I guess for the test. Any ideas on a cheap pump that would do this little test job? Can I just give it gravity feed?
When I use the hand primer I get fuel coming out of the return line so fuel is now getting through the system.
I would post a picture of the wiring, but don't know how to do that on this forum.
Thanks so much
JBat
p.s ..FYI I have been running the current engine on straight veggie oil for the past year. I have run my past two VWs on it and also my sail boat. I have had no problems with anything veggie related that I know of over the past 5 years of doing this. Pretty simple and cheap conversion process that I designed and installed myself (two tank system). More later if anyone is interested.