That's an idea
It may be easier to remove the inlet manifold to get to the inner coller nut on the pump and there is the support bracket at the rear lower part of the pump that may need loosening up... It's been a while since I did one
UnitLandy
Well-Known Member
Incidentally, Mark. Would you know what special size socket I'd need to remove the injectors? I'm not sure if it could be a lose olive, leak off pipe or copper washer, but their's a trail of diesel down the side of the engine that drips on the ground. I'll double check when getting the engine up to temp with manifold off.
Flossie
Well-Known Member
Bear with....
It's quite likely the rubber leak off pipes are split at the ends. If not and it's the fourth injector, the seal around the wiring on the injector can give up and a new one needed
Datatek
Well-Known Member
PM me with an Email address and I will send you my steel rule timing info.
Depends what you used for the leak off pipes the first stuff I tried only lasted a year. Got the Gates reinforced stuff on there now.
UnitLandy
Well-Known Member
First measurment above was at 12/16 of an inch & that was 86.57% modulation at 94⁰c
Second I knocked it to 10/16 of an inch and that only drew it down to 83.84% - 81.89% modulation at 93⁰c
I don't know if the pump will even rotate enough to get it down to 50% but I'll see.
Second I knocked it to 10/16 of an inch and that only drew it down to 83.84% - 81.89% modulation at 93⁰c
I don't know if the pump will even rotate enough to get it down to 50% but I'll see.
Datatek
Well-Known Member
You only moved it 2 sixteenths, needs to go a good bit more than that, there should be at least another 4 or 5 sixteenths available if not more.
The change in modulation is not linear, as an example:-
A an example these are the measurements I got on the last one I did.
7" 7/16" Modulation 63% @ 95C
7" 5/16" Modulation 60% @ 95C
7" 4/16" Modulation 50.31% @ 95C
One sixteenth of additional movement produced a big change in modulation.
Engine temperature also affects the modulation, ideally it should be at 95C for 50% modulation, a lower temperature will change the modulation. I think I sent you a chart of modulation against temperature?
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. I'll move it a good 4-6 16th next time.
RangeRoller dt
Well-Sprung Member
If you tell them it’s half 2, they think it’s 1PM!
