1.6 td pump was leaking, swapped it out, and now no-run

[audilvr]

i have a 1.6 td powered 91 golf. the pump started leaking badly today at the throttle plate. i have another pump to swap in, but i don't have a bently for guidance. i'm hoping someone can share some advice to help me not make it worse. i'm swapping it put tomorrow, so wish me luck....

thanks for looking.

[745 turbogreasel]

You cold pull the top, and change the o-ring


Mark your throttle shaft -arm alignment before you remove it
pics here http://rotordesign.com/1993cummins/category/bosch-ve-pump/page/9/

[audilvr]

i think it's the shaft, and the enrichment arm is seized. i have to change the pump.

[audilvr]

i changed the pump with a known to be good pump from my last engine. i've tripple checked the belt timing, everything is as it should be. i primed the pump and bled the lines, but it won't run for more than a few seconds. i marked the timing from the last pump and matched it with the new, and played with it a bit too. no matter what i do, it won't stay running. any idea's?

[burn_your_money]

How long did the known good pump sit for? Do the various timing tools at least lock in place? It sounds like you don't have a timing gauge? Where are you located?

[audilvr]

the cam and pump both lock in. i don't have the dial guage, but i marked the position of the pump before removing it, and set the new one to it. the pump has been sitting since may with fuel in it.

[audilvr]

i'm in halifax ns.

[8v-of-fury]

the cam and pump both lock in. i don't have the dial guage, but i marked the position of the pump before removing it, and set the new one to it. the pump has been sitting since may with fuel in it.

Unfortunately, setting the pump to where it was isn't really good enough to get a spot on reading every time. It is the internals that move and thus decide the timing value. I would try advancing the timing a tad at a time and see what happens, it will probably smooth it out for you. Advance is moving the pump closer to the engine block.

Also it sounds as though your settings may have differed from the other pump.. Albeit you transferred them, they mean nothing to another pump.. they are going to need tuning. There are several lengths of governor spring shafts, and a different length would cause your setting to be irrelevant to the next pump.

[libbydiesel]

8v ninja'd me, but I typed it so I'll post it...

You cannot set two different pumps to the same relative position between pump case and bracket and expect the timing to be the same.  Internal differences in the machining of the various components of the pumps result in a significant variance.  When timed to the same spec, some pumps will be very close to the engine and some farther away.  

[audilvr]

done for tonight, but i'll be at it again tomorrow. i'll update after i play with it some more.

[DanV990]

Another thing to check besides the timing is that you have the correct fuel banjo bolt installed in the fuel inlet. How long does your engine run when it starts? If you accidentally put the banjo bolt for the return in the inlet the engine will run for about 10 - 15 seconds or so before it starves for fuel and dies. The return banjo bolt only has a pin sized hole in it and it has a screen. The inlet banjo has three large holes in it and no screen.

[audilvr]

pump was bad. must have gotten some crap in it somehow.thanks for all of the input.