Author Topic: Rough Idle (Read 18135 times)

jtanguay · « **Reply #45 on:** June 09, 2007, 08:11:32 pm »

Quote from: "burn_your_money"

You don't want to actually "zero" the guage (set it to 0.00) or you risk lifting it off the cam, which would be useless. I suppose "setting" it to 1.00mm would be a proper way to say it

that can happen just by setting the arrow to point to the zero on the gauge???

Vincent Waldon · « **Reply #46 on:** June 09, 2007, 08:16:39 pm »

1) At TDC, set it to 2, 3, 4... doesn't matter.

2) rotate the engine backwards (NOT using the crank bolt !!) until the dial gauge stops moving

3) zero the gauge.... set it to 0

4) rotate the engine forwards until exactly TDC. Read the timing.. something like 1.00 mm is what you want for a turbo.

You can set it to 1.00 in step 3 if you want... then the reading would be 2.00 mm... I just set it to zero so I don't have to do any complicated math.

I'm about to help someome do their timing belt and timing... will take my camera and hope to do the sticky of all stickies on timing... easy to get confused.

jimfoo · « **Reply #47 on:** June 09, 2007, 09:55:11 pm »

When I first set my timing on my AAZ, I did zero the gauge to 0.0, then proceeded to time it. It ran like ***, blowing lots of white smoke. I went back and re-read the procedure later and saw the 1.0mm zero clause. If you don't do it that way, your timing will be 1.0mm off!!!

jimfoo · « **Reply #48 on:** June 09, 2007, 09:58:34 pm »

http://www.vwdieselparts.com/injtim.htm

mansvw · « **Reply #49 on:** June 09, 2007, 10:04:52 pm »

Cheers for that "Vincent Waldon" .

a quick question, at the point when the dial stop moving, is that when you set the dial to "zero" or is it once the dial just start to move again, you set the dial to "zero".?

Vincent Waldon · « **Reply #50 on:** June 09, 2007, 10:06:22 pm »

Yup.. read the official VW instructions as shown in that link.... in particular, step 3.

jimfoo · « **Reply #51 on:** June 09, 2007, 10:08:26 pm »

On the web site, and in my book it says to set it to 1.0mm, not 0.

Vincent Waldon · « **Reply #52 on:** June 09, 2007, 10:10:09 pm »

Quote from: mansvw

a quick question, at the point when the dial stop moving, is that when you set the dial to "zero" or is it once the dial just start to move again, you set the dial to "zero".?

I let it stop moving.. and then rotate a bit more... just to be really sure the plunger has bottomed.

Vincent Waldon · « **Reply #53 on:** June 09, 2007, 10:14:49 pm »

Perhaps the AAZs are a bit different ?? Here's the A2 Bentley's take:

http://www.oneilcastro.com/A2Bentley/FU02/ch5.5.3.html

mansvw · « **Reply #54 on:** June 09, 2007, 10:17:13 pm »

Thanks Vincent Waldon, that makes sense........

jimfoo · « **Reply #55 on:** June 09, 2007, 10:27:07 pm »

Quote from: "Vincent Waldon"

Perhaps the AAZs are a bit different ?? Here's the A2 Bentley's take:

http://www.oneilcastro.com/A2Bentley/FU02/ch5.5.3.html

I don't know, but maybe they are. Like I said, mine ran like crap when I set it to 0. So if yours runs good at 0, then leave it. If it doesn't run well, try it at 1.0mm.

SmokeyCJR · « **Reply #56 on:** June 09, 2007, 10:44:18 pm »

Make shure the pump is not 180 degrees out. Is the pump on the right timing mark. There are two holes in the timing gear right. If you changed the belt and set the pump 180 degrees out you will run if you have good comprestion. This happened at my shop. Some one set timing, the numbers on the dial indicator looked right, but it was 180 degrees out. The car ran and drove into the shop. Same symptoms you have, white smoke rough idle. I would not have belived it if I did not see it. It took me a day to realize what was wrong. So make shure the pump is at it's TDC mark, there is a notch on the inside edge (between the pump bracket and the pully) that needs to be up. good luck. the only other thing what white smoke and rough idle, and no power mean is low compresion. Check the pump for TDC.

jimfoo · « **Reply #57 on:** June 10, 2007, 12:34:40 am »

My AAZ only has one hole for the pin, and the pulley is keyed, so it can only go on one way. Not sure if all of them are like that or not.

burn_your_money · « **Reply #58 on:** June 10, 2007, 12:52:34 pm »

All pumps are keyed, and I think at TDC the key points to 11 oclock.

jimfoo · « **Reply #59 on:** June 11, 2007, 12:00:10 pm »

The only other thing about mine is that after the crash, it ran like ***. I have never really torn a pump apart, and most people dismissed the notion that something could have changed internally, but it did run better when timed from 1.0mm. In the not too distant future, it should be drivable. When that happens, I'm getting it dynoed, and will have them adjust the timing on the dyno. After that I guess I better check the timing and write down what it is.