3.2 Can't Hold idle sounds like a cylinder missing

Here are more reference material I found regarding the Bosch CIS system. I have several other pdf's but they are too big to upload

 

That may be, but I think it's better to go thru the following diagnostic steps (in this order based on the cost/hassle of each) before deciding to do that:

1. Confirm/deny all electrical components are working by measurement.

2. Confirm/deny basic pressure parameters by measurement -- regulated supply pressure, fuel delivery rate of pump when at pressure, lower chamber pressure, return fuel flow rate from fuel distributor lower chamber to tank (this confirms the orifice at the outlet of the lower chamber is not blocked).

3. Confirm/deny fuel distributor performance by measurement (equal flow rate -- i.e., equal volume delivered in equal time -- from all injectors with the airflow plate in idle, mid, and WOT positions) -- the "dixie cup test"

Pass 1 and 2, but fail test 3 = call Larry F. for rebuild -- JMO (and I'm still not sure that the OP has passed test 1 )

This is the 539/89 manual that Ferrari (meaning Bosch) put together for KE3-Jetronic:

Image Unavailable, Please Login

and this link will get a pdf copy:

https://www.dropbox.com/s/95x8kzktl58rbjt/Bosch KE3-Jetronic 539_89 as implemented on late non-US 328 and 3.2 Mondial.pdf?dl=0

 

You need to drop a 360 crank in that motor while it's apart !

 

I have a Deja Vu what happened to me last year in Italy. When I was waiting at a busstop for the rest for the gang it suddenly looked I had misfires and I lost half of my power together with an overwhelming smell of Ferrari Au de Cologne (Petrol smell). Turned off immidiate not sure what was going on. Since we had plan for that day I hopped over into my friends Ferrari and we left it at a good restaurant friend to pick it up in the evening.

I started again and same story. However one side of the exchaust manifolds stay cold so it was obvious that it did not ignite. so this meant the Rotor, Distributor cap, Ignition coil or the Ignition module and if in worst case the ECU. The first 2 were in order after a relatively quick check so we decided to swap the coils and after that the other bank had the issue. Then swapped the ignition modules and the problem was on the other side again.

I noticed also that the heating paste was totally dried out (my mistake to never look at it while I know these things) Well... I had all the other parts but not the module! Now that we are in Holy Land, land of Ferrari it should'n't be that difficult to get an ignition module! Got myself wrongthere.. No seperate modules only the whole package Coil bracket, coil and the module for 1000 USD and 2 week delivery time

I had it delivered home from Verona Ferrari dealer to Amsterdam again since I was insured.

Tested affected module with a ignition module testing tool and it was completely dead. We looked at some comparisons as the Magnetti Marrelli one is difficult to find and outrages prices. So we picked out a Hella 5DA 006 623-001 Module for 40 USD and replaced boths modules. Problem gone and one spare Magnetti Marrelli for in my suitecase!

What I am trying to say it could be the Ignition module, but I love stories IMHO it smell like a Ignition module story

Not sure what is more expensive to buy new modules or have them tested. Only view people have the right equipment!

 

view = few

 

OK. Call me silly - but I would have sent the car to SRI Dave Helms (or similar based on FChat input) way before this point.

In my experience with ‘83 QV (owned 18 years) these 38 year-old cars tend to have 2 to 3 issues happen almost at once - making simple, single fixes impossible. (To avoid 2 to 3 issues arising -almost every aspect of operation must be kept in proper working order).

I second the motion to send it to a Mondial friendly expert - especially since you say raw gas is flowing out the back.

Some of us have been in exactly the situation you are experiencing.

Stay Safe, SG


Sent from my iPhone using FerrariChat

 

A cold motor likes a rich mixture. It's the function of the electromagnetic actuator, in conjunction with the injection ECU to lean out the mixture during warm-up.

An easy way to test for a rich mixture is to move the sensor plate (air flow meter) up. There's not a lot of adjustment space at idle, because the sensor plate is almost closed. Just open the throttle a bit, and the plate will move down. Then you have space to move it up just a bit. You can pinch the center bolt between your thumb and middle finger. Simultaneously open the throttle with your right hand, and move the sensor plate up a bit with your left hand. If the misfire goes away, you know you're too rich.

The best way to clean plugs is with a torch. When someone says they're going to go out on the highway and "blow the carbon" out of the motor. What they're really doing is getting the spark plugs hot enough to burn off the carbon.

If it works for an MG, it will work for anything !

 

Bear in mind that if the diaphagm in the fuel distributor head has split, then the volume of fuel injected can drown the plugs. The repair kit is on e bay at about £50 last time i looked, the distributor has a bosch id plate on the side so u get the correct kit. Very easy to fit as simple diy job. The car i saw it done on was back firing, black smoke and filling the sump with fuel( plus 2 inches)
Some cylinders were getting nothing and others were on full fuel.

 

There is still the cold start injector which could be leaking. If running too rich, a wet plug will prevent a good spark. In this case the bad ignition looks like result of a too rich mixture.

 

Didn't think of that since I disabled mine, but a good one!

 

One thing that happens a few minutes after cold start-up is that the system transitions from running open-loop (cold) to closed-loop (warm) -- have you tried simply unplugging the O2 sensor (which will always force open-loop operation)?

 

The Baum Tools kit looks to have all the different adapters.

http://www.baumtools.com/shop/BMW/Fuel-Injection-Tools/1318KIT-FUEL-INJECTION-PRESSURE-TEST-MASTER-KIT?cPath=14_49&zenid=70b66901014d8f7d357b2554f6b25e67#.Xp-YRClKjIU

On the K-Jet with Lambda, a low system pressure will cause a lean condition. I had this from a faulty accumulator. I'm not really familiar with the KE3, but the fuel distributor is the last thing I would mess with. I would replace that system pressure regulator first, and another part you have called the system pressure accumulator. These are standard Bosch parts, and shouldn't cost too much. And test whether you are getting a signal from the injection ECU to the magnetic actuator. You may need an oscilloscope for this.

Hopefully the fuel pressure tests will help point to something.

You can run the fuel pump by turning the ignition key to the run position, and removing the safety switch jumper on the mixture control unit.

 

https://www.ferrarichat.com/forum/threads/3-2-cant-hold-idle-sounds-like-a-cylinder-missing.620133/
Mike had a similar issue if not the same.. I had the same with different symptoms. If a module gets to hot it will do weird things. Have a read at Mikes Post as I thing you have the same.

 

If you unplugged the cold start injector electrically, it still can leak mechanically. So it's not fully ruled out as a cause. The pressure regulator is probably more suspect though.

 

Look up Ermeto fittings to see if they look like the fittings u need

 

My notes have Ferrari PN 128972 = Bosch 0438161013

Have you made a pressure measurement? (Don't buy one if you don't need one! Also, shop around if you need one -- seems to be available from about $60 US to $500 US ).

 

From what i remember from the one i saw being done, you disconnect the pipes on the top and remove the top cover, you will find a diaphragm and 8 nylon discs and springs etc, just a matter of new for old. Look on the side of the distributor for the bosch id plate to be sure to get the right kit. The owner doing this was not a motor mechanic but a machinist and he managed fine. Kit was about £50
Not seen him for a while so might have retired, will see if i can find him to see if any pics