Rich mixture.

Dear Volker,

I got the feeling that there are multiple faults in my Volvo, It is a car with some grimlins, I own it 3 years and I never enjoyed it to drive, Always some problems. I have had many Volvo and never had so much problems with them.
Anyhow, I have no possiblities to test the MAP, do you have any advice who might be able to do?
But no matter which MAP I used, the engine runs very rich, is it possible that the wrong injectors are fitted? I checked one and that one is not from Bosch, on the injector I only could read Rin 36 2106 RAM B, do you have any idea who manufactured these injectors?

The distributor that was fitted to the engine is a Bosch JF4RX4 0231 163 021, I guess it has vacum retard?

Best regards,

Mathieu.

Hi Mathieu,

I also believe that your car has several issues. That is very typical. Who can check your MAP sensor? It is either Bosch Automotive Tradition or Dr-DJet

our ignition distributor is a JFUR4X (L). It has a retard of 10° crankshaft in idle. Even if the one who sold you the ignition distributor has recommended you to connect it to your 123 distributor, then IT IS ABOLUTELY WRONG. It will make the timing to advance in idle and not retard. Best thing you can do is not connect anything there. Otherwise your idle timing changes by 20° in idle to what it is supposed to be.

123 ignition standard shifts igintion timing to early when vacuum is applied. The dip switch only changes rpm dependent timing.

I do not know aht a Rin 36 2016 RAM B injector is. I recommend you to change it to a Bosch 0 280 150 036.