Fixmyvw.com

Author Topic: having a few 1.9 mtdi problems  (Read 7164 times)

March 06, 2014, 12:12:49 pm

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
having a few 1.9 mtdi problems
« on: March 06, 2014, 12:12:49 pm »
i have a landrover 300 pump. i am running 216 injectors nozzles and i have this one an ahu with stock turbo.

the ptoblem i have is you see the idle is inconsistent. no matter what i do, if you bring the idle down at all from its idle rpm via load on the alt or by engaging 1st gear.. the motor drops down to a lugging like 400rpm.

no matter where the pump settings are.. i tried it with a 1.6td idle spring on the governor assembly for a while and it had a much better idle than this.. it was choppy but atleast itidled when the head lights were turned on.

what is going on here?


Hey there, how you doin?

Reply #1March 06, 2014, 12:17:36 pm

bbob203

  • Veteran

  • Offline
  • ***

  • 1789
Re: having a few 1.9 mtdi problems
« Reply #1 on: March 06, 2014, 12:17:36 pm »
Do you have the max fuel screw turned up?
92 Passat wagon M-TDi
03 Jetta wagon TDi
VE Timing tools for rent
Need a car transported a long distance? Pm me for details.

Reply #2March 06, 2014, 01:37:56 pm

rodpaslow

  • Veteran

  • Offline
  • ***

  • 670
Re: having a few 1.9 mtdi problems
« Reply #2 on: March 06, 2014, 01:37:56 pm »
Is this was happens when you have the position of the throttle linkage (the pump shaft linked to the governor springs inside the pump) is backed off to far and the governor spring for the idle is not able to perform it's job?
99' 1.9 1Z Tdi, hybrid pump -1.9 housing & rover internals, 2052 wastegate turbo,.25 hflox nozzles, SDI intake, CTN tranny
96' 1.6 TD Golf, Giles pump, VNT 17, Gas changed to Diesel, Air to Water Int.

Reply #3March 06, 2014, 09:26:39 pm

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
Re: having a few 1.9 mtdi problems
« Reply #3 on: March 06, 2014, 09:26:39 pm »
no matter where the pump settings are..

Legit. Screw in idle down, vice-versa.. Change the throttle arm position, and make the idle and fuel screw match, same thing.

Cold, or ANY load on the engine it bogs right down to the same choppy idle (which is weird).. Ill actually go out right now and get the laser tach on it to see WHAT the low idle is idling at.
Hey there, how you doin?

Reply #4March 07, 2014, 02:48:10 am

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
Re: having a few 1.9 mtdi problems
« Reply #4 on: March 07, 2014, 02:48:10 am »
Ok so I went outside and fired it up, which was perfect at 0F btw, and it chugged away at an idle of about 700-725 which is weird.. because that is not as low as it seemed to be. The car was just a shaking, and the motor a rockin. So Ok, why is the 700 SO ROUGH and why does it drop and chug like that?

I turned the idle screw up so it was idling at 1000 on the nose.. I then proceeded to turn on every single electrical thing in the car.. Even the rad fan and glow-plugs (both manual relay and switches) and the idle didn't falter one bit.

1000 is  too fast for my likings.. but any lower doesnt work at all. help
Hey there, how you doin?

Reply #5March 07, 2014, 09:32:09 am

Diesel_Zuk

  • Junior

  • Offline
  • **

  • 182
Re: having a few 1.9 mtdi problems
« Reply #5 on: March 07, 2014, 09:32:09 am »
Change governor springs maybe?

Reply #6March 07, 2014, 11:27:09 pm

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
Re: having a few 1.9 mtdi problems
« Reply #6 on: March 07, 2014, 11:27:09 pm »
Change governor springs maybe?

Are they not matched to the governor flyweights though?

Like I said in my first post, I had a 1.6TD idle spring on there for the longest time.. Here is a few pictures from somebody elses album i found through google (not my pics).. this is what he says is a bone stock rover cage and springs. Notice the dual idle spring.




Hey there, how you doin?

Reply #7March 08, 2014, 10:34:09 pm

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
Re: having a few 1.9 mtdi problems
« Reply #7 on: March 08, 2014, 10:34:09 pm »
Anybody got any ideas?
Hey there, how you doin?

Reply #8March 14, 2014, 12:58:33 am

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
Re: having a few 1.9 mtdi problems
« Reply #8 on: March 14, 2014, 12:58:33 am »
I put the 1.6 spring back in the pump, and reset all the adjustments. Problem solved.. weird.
Hey there, how you doin?

Reply #9March 16, 2014, 12:09:03 am

CRSMP5

  • Guest
Re: having a few 1.9 mtdi problems
« Reply #9 on: March 16, 2014, 12:09:03 am »
my 300 pump had 3 springs... when cold.. mine sounds like it has a cam in it... but i cannot say ive ever started it below 30f... even on warn summer day sounds like cam till 3 or so min no smoke though... mine is at 118.. never touched my fuel screw lock color.. i did add 3 washers like gov mod suggested...

does your pump have the weird lever with springs on it?? goes in the front of the pump... mine does.. and libbys theory is its for start up reduction of soot.. but no one is 100% what it does..

Reply #10March 25, 2014, 02:06:30 am

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
Re: having a few 1.9 mtdi problems
« Reply #10 on: March 25, 2014, 02:06:30 am »
ty.

no it doesnt have the odd rover setup on the front. maybe i have a 200tdi pump? i dunno. yes it does sound like a "cam" in an mk1 that low of an idle is wrenching EVERYTHING around like crazy.

it is not setup right, the car won't even start on its own unless i am inside and physically giving it the tinyiest amount of pedal. fine you say? just up the idle screw that much? well then my hot idle is screaming above 1000rpm.

basically if i want it to start and idle cold properly, i need to live with an 1100 rpm hot idle. not happening. I want an 875-900 hot idle. it is where it sounds best. Even then when it is running hot, say I pull a big load from the alt.. jump starting another car.. idle drops down to a bucking ~600 and does not recover until you blip throttle, only after the load is gone.

I am unsure of where to set it up.. i dont suppose you have pics of the throttle shaft orientation and a good shot of the fuel screw crsmp5?
Hey there, how you doin?

Reply #11March 25, 2014, 07:39:03 am

CRSMP5

  • Guest
Re: having a few 1.9 mtdi problems
« Reply #11 on: March 25, 2014, 07:39:03 am »
Well, i can do things 3 ways...

Mine needs pump head seal, ulsf made it leak after 3 summers, so i gotta pull it to fix when i get home

2, ask new, or comming up new boss to crack his open, has one of uk guys last shipment...

At home is yet another uk guy one mr no hair got for upcomming caddy swap... Well bosses caddy swap goal is running by fri too...

But my camera, internet access is via phone... So i cannot post pics till after 30th...

I really do not wanna crack open new bosses though as i want to see if libby correct in it not needing a gov mod...

Lucas also has one, pre uk guys last trip, all these are 300 with goofy throttle linkage and pots on top...

Only know of 1 in use like yours, but id trust 0 info that comes from its fingers, mouth. Such a wizbang im positive he screwed with it, the ones i have, only gov mod on mine, which ive been told not needed, got oppertunity to find out now


Reply #12March 25, 2014, 02:02:50 pm

iamdieselnutmechanic

  • Junior

  • Offline
  • **

  • 53
Re: having a few 1.9 mtdi problems
« Reply #12 on: March 25, 2014, 02:02:50 pm »
I would agree that the gov mod is not needed. This thing rolls coal even with 20psi, no matter where the pump is set.

I have seen one like mine too, it was 8v-of-fury's pictures I posted before in this thread. Do you know of another person I could contact? He says it is running this setup;

-stock LR governor cage, with 1.6 idle spring.
-stock LR governor flyweight assembly.
-custom ground boost pin.
-stock LR internal throttle arm.
-1.9 VW 1Z DE110 cam plate and matching plunger shim.
-1.9 VW 1Z pump case pressure regulator
-1.9 VW 1Z advance piston, spring, shims, and front cap
-stock LR 11mm rotor and and head.
-1.6TD delivery valves.
Hey there, how you doin?

Reply #13March 25, 2014, 06:35:21 pm

theman53

  • Global Moderator
  • Veteran

  • Offline
  • ****

  • 7837
  • Personal Text
    Holmes County Ohio - North Central Ohio
Re: having a few 1.9 mtdi problems
« Reply #13 on: March 25, 2014, 06:35:21 pm »
That is not a rover pump any more, that is a hybrid and probably why you have issues. If I were to guess it would be the advance section fighting you. Ask libby about it, he will know.

Reply #14March 30, 2014, 09:14:14 pm

8v-of-fury!

  • Guest
Re: having a few 1.9 mtdi problems
« Reply #14 on: March 30, 2014, 09:14:14 pm »
To call it a Rover Pump only means it came from a Land Rover. It is a mechanical direct injected 11mm pump for the 2.5 4 cyl DI engines in the Land Rover Discoveries.

The pieces internally that make it what it are, are;

-Throttle arm
-Governor cage
-Internal throttle assembly
-Cam plate and
-Advance piston/spring

What I have changed, hasn't effected its DI capabilities. I have only changed pieces that make it indefinitely better for the engine that it is fueling. Changing the cam plate and advance piston assembly has made this pump essentially identical to a stock ALH 11mm automatic pump.