Hi CO on 3.0 CSI. Help please.

Thank you so much for your help!!! I appreciate it! Will check tomorrow.
What do you think about trigger points? May they cause over fuelling?
Mine look considerably worn. Found some private listing for the new ones.

Thanks again

nordfisch wrote:

can you hear the membrane inside the MPS work when you pull vacuum?.
 

Hi Norbert,
while I fully agree that one should now check whether MAP sensor sees manifold vacuum, I am sorry to disagree on noise from diaphragm. No you should not hear it. If you hear it jump instead of moving smoothly, something is wrong. In the beginning I had bought diaphragms from a USA source and they behaved like that. It also meant that they jumped like "Knackfrosch" - a children toy making a sound - from one postition to the other extreme position without smoothe movement in between.

Hi Yury,
it is reported trigger-points can bounce in a stadium between mostly and totally worn just before they fail completely.
Maybe this is true... and would produce extra injection pulses.

You can control and readjust the points using a tool I develloped some years ago.
Contact me via PM - I could send you the drawing needed to produce the tool on a lathe or send you the ready-produced tool.

Regards
Norbert

edit: Send a good photo of the trigger points and we can see the status in most cases or measure the gap between the two cams. If the gap is more than about 23,7 mm they are really worn. 

One more question if possible while I'm waiting for my new trigger points.

I have a Bosch transistor ignition kit exactly the same like one listed here : www.ebay.co.uk/itm/234950792901 . It has hall-effect sensor instead of breaker and capacitor.
I tried to install it as a kind of upgrade for my ignition system.

Everything but I met one unexpected problem.

I put my engine to TDC, made all alignments, found 1st cyl position, even checked a spark on a 1st cyl by moving distributor body.

I run the engine after without a problem and set the timing approximately first to get same vacuum value I had before with contact breaker.

Everything is running smoothly BUT when I'm trying to connect vacuum line back to distributor the engine is stalling immediately.

I know that on CSI we don't have vacuum advance for distributor, it's retard. So i tried add more advance with vacuum disconnected to compensate it. Without success.

More to say I couldn't find timing position that allows to connect vacuum line. Engine stalls and I can't start it with vacuum connected.

With vacuum disconnected and plugged everything is fine.

Any thoughts would be appreciated.

Hi Yury,
I think this is an electrical problem.
Did you check the spark when you apply the vacuum?

Might be the ground wire that is part of the breaker-bottom-plate is broken or misses and the electronic unit looses the ground it needs when the plate moves.

Regards
Norbert

Hi Yury.

yes you have a 10° retard on this distributor. Adjustment is done as follows:

• at 2500 rpm without vacuum connected (1700 rpm after 10-1975) with ignition light
• Must flash at 22° advance and there should be a small ball in fly wheel to indicate correct position