+- STD (https://www.superturbodiesel.com/std)
+-- Forum: Tuning (https://www.superturbodiesel.com/std/forumdisplay.php?fid=6)
+--- Forum: Engine (https://www.superturbodiesel.com/std/forumdisplay.php?fid=7)
+--- Thread: Injector pump lever not free (/showthread.php?tid=6159)
Injector pump lever not free - stig - 01-22-2015
Hi to you diesel guys
I have a 124 300D OM606, the car has a very stiff accel. pedal from over half way down. I've checked all linkages and cables, they're good. I have disconnected the injector pump linkage and when you push it simulating pushing the pedal, it moves nicely as it should then feels like it hits an internal spring/diaphragm, it will move to full throttle stop but is much harder to push, which is where the stiff pedal is coming from. Does anyone know what it could be hitting inside the pump? It is not the vacuum regulator for the auto, I have removed this for trouble shooting. It feels like and sounds like it may be hitting the idle control electric unit on the back of the pump, could this be so? The car does also have a small issue when returning to idle as it 'hunts' a little before settling into a smooth idle. Any suggestions? What could be obstructing inside? Thanks all.
RE: Injector pump lever not free - barrote - 01-22-2015
Probably is just the EGR system , in the other side of the pump u have EGR switch and other vacumm switches. take it out and u should have correct operation.
hunting idle , is probably air leak into the fuel suply . check and replace all O rings at filter and lift pump as so the ones in fuel heater, and the hunting should disapear.
good luck
RE: Injector pump lever not free - stig - 01-22-2015
Hi, thanks. I have removed the vacuum unit for auto and egr switch from other side, so it's not that. Definitely no air in the system. The hunting is a minor problem compared to the other, which is what I really need to fix. Any other ideas?
RE: Injector pump lever not free - stig - 01-23-2015
Feels just like it's coming up against a diaphragm, any clues?
RE: Injector pump lever not free - stig - 01-25-2015
Any one any idea?
RE: Injector pump lever not free - EvoPeter - 01-25-2015
I think you have to open the back cover and check with a mirror och remove the pump and check.
RE: Injector pump lever not free - stig - 01-25-2015
I think you're right. I'll report back.
RE: Injector pump lever not free - barrote - 01-26-2015
i did some reserch and foud out a pump with the elements stuck, reason is i belive the fellow had used VEG oil.
only 2 of 5 where stuck, delivery valves where stuck as well, but that does not interfere with the thotle lever.
if that pump had run with veg oil, maybe stuck. or maybe someone had removed the throtle linkage stop, causing the lever to go against a spring inside, or a small problem with the stop capsule.
anyhow if it works more less correctly use it , soon soon the problem if there are one will come to light.
"dont open the pump" unless u know what u´re after , that is like "clocksmithing" dont remove DV holders , it will leak after.
regards