wheel movement ???

[kwik.kwak]

my bro has a 96 300tdi disco, with a  3inch suspension lift kit,  then a  2 inch under suspension lift ( the kit wizard sells )  all been poly bushed, and  still the drivers side front wheel moves backwards and forwards, 1 minute its  virtually rubbing on the  edge of the rock slider, the next its 3 inches away from it, anybody any ideas at all ???? we are flumoxed :)



  also my disco 300tdi (96) i have just  put a brand new head on it, new valves, new seals everything brand new, and still when i hold my foot at about 2500-3000 revs it will puther out  white/blue smoke, i have had the injectors out and had them tested all ok :) checked the timing and pump timing, again we are absoloutely flumoxed, somebody must have sum idea,s for us :)


                                cheer,s.
                                               martin :)

[beast5680]

sounds like theres movement in one of the suspension arms?  :?  there must be something loose somewhere, the front radius arm should stop any movement so i assume there would be something amiss there to give the problem you suggest

re the smoke maybe the injection pump is playing about

[wizard]

Yep it sounds like a bush gone in the radius arm, thats what stops the axle from flopping about .
The only way to check the bushes is to take the arm off and have a look, if the bushes are ok maybe the bolts are shot.
Also have a look at the two rubber bushes on the rear of the radius arm.

RE smoke.
Check that the rubber diaphragm in the pump compensator hasn,t split.
This pic will point you in the right direction.



Make sure you put it back in, the same position it came out (mark it 1st)


Regards
wizard  :twisted:

[Budgie]

The suspension has to be something to do with the bushes or where they attach to the axle or body. Mkae sure the ones on the chassis are seated correctly.

The smoke issue, white smoke is normaly associated with unburnt fuel from a duff injector but blue smoke is engine oil being burnt so if the injector pump doesn't sort the problem then start looking in these areas and get a compression test done on all 4 cylinders.

Also clear the engine breathers incase they are blocked and pressurising the crank case.

When are you testing the motor for smoke, while the engine is under load or stood on the drive and just revving it? I only ask cos if there is no load on the engine then the turbo isn't working so will not give an accurate account of any problems.  

[kwik.kwak]

The suspension has to be something to do with the bushes or where they attach to the axle or body. Mkae sure the ones on the chassis are seated correctly.

The smoke issue, white smoke is normaly associated with unburnt fuel from a duff injector but blue smoke is engine oil being burnt so if the injector pump doesn't sort the problem then start looking in these areas and get a compression test done on all 4 cylinders.

Also clear the engine breathers incase they are blocked and pressurising the crank case.

When are you testing the motor for smoke, while the engine is under load or stood on the drive and just revving it? I only ask cos if there is no load on the engine then the turbo isn't working so will not give an accurate account of any problems.  

then engine is tested on my drive, at a constant  2500,3000 rpm, compression is spot on,  its gonna be fuel not oil thats  causing it, and it doesnt do it all throught the rev range only in one position, but like i say, injectors have been tested and are ok,  but  the people that checked the injectors did say they are 2 stage injectors and they can only test the first stage, i am pretty sure its nothing to do with the turbo,  although i wud like to  be able to test  without turbo working, is there any way ???



                    cheer,s
                                   martin.

[kwik.kwak]

Yep it sounds like a bush gone in the radius arm, thats what stops the axle from flopping about .
The only way to check the bushes is to take the arm off and have a look, if the bushes are ok maybe the bolts are shot.
Also have a look at the two rubber bushes on the rear of the radius arm.

RE smoke.
Check that the rubber diaphragm in the pump compensator hasn,t split.
This pic will point you in the right direction.



Make sure you put it back in, the same position it came out (mark it 1st)


Regards
wizard  :twisted:

  hi there :)

                        have checked the diaphragm and it looks to be ok, i have had this problem ever since i had the car and really thought it was injectors, never  bothered me until i  cracked my head and thought it was and ideal time to sort it out, now its my head thast cracking trying to find out whats causing it :P


                                        thanx,

                                                      martin.

[Budgie]

then engine is tested on my drive, at a constant  2500,3000 rpm, compression is spot on,  its gonna be fuel not oil thats  causing it, and it doesnt do it all throught the rev range only in one position, but like i say, injectors have been tested and are ok,  but  the people that checked the injectors did say they are 2 stage injectors and they can only test the first stage, i am pretty sure its nothing to do with the turbo,  although i wud like to  be able to test  without turbo working, is there any way ???

If you're not driving the vehicle and it's not a rolling road when you do the test then the turbo is not running. So doing the test on your driveway will only tested the engine without the turbo running.  

I would still check the breather on the side of the head and when was the intercooler last cleaned?

[kwik.kwak]

then engine is tested on my drive, at a constant  2500,3000 rpm, compression is spot on,  its gonna be fuel not oil thats  causing it, and it doesnt do it all throught the rev range only in one position, but like i say, injectors have been tested and are ok,  but  the people that checked the injectors did say they are 2 stage injectors and they can only test the first stage, i am pretty sure its nothing to do with the turbo,  although i wud like to  be able to test  without turbo working, is there any way ???

If you're not driving the vehicle and it's not a rolling road when you do the test then the turbo is not running. So doing the test on your driveway will only tested the engine without the turbo running.  

I would still check the breather on the side of the head and when was the intercooler last cleaned?

intercooler was last cleaned  3 months ago when i fitted it :) its an alisport  intercooler :)

[kwik.kwak]

then engine is tested on my drive, at a constant  2500,3000 rpm, compression is spot on,  its gonna be fuel not oil thats  causing it, and it doesnt do it all throught the rev range only in one position, but like i say, injectors have been tested and are ok,  but  the people that checked the injectors did say they are 2 stage injectors and they can only test the first stage, i am pretty sure its nothing to do with the turbo,  although i wud like to  be able to test  without turbo working, is there any way ???

If you're not driving the vehicle and it's not a rolling road when you do the test then the turbo is not running. So doing the test on your driveway will only tested the engine without the turbo running.  

I would still check the breather on the side of the head and when was the intercooler last cleaned?

breather ??? the pipe from block to head ????

[wizard]

Not to annoy anyone......but the Turbo is running all the time. You only notice it "kicking in" once it is spinning fast enough to create enough boost pressure to activate the compensator diaphagm.
As Budgie said this can only be done correctly on a rolling road or running it out on the open road.

regards
wizard :twisted:

[Budgie]

breather ??? the pipe from block to head ????

There is a round black breather filter on the side of the head that has a pipe coming from the sump/block into the bottom of it and a second pipe coming from the left hand side of the filter that goes round the back of the head and joins into the air intake pipe.