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[chris79]

I found problem of misfire that I have only at warm engine after about 1 hour driving.

I open hood and some times the controll pressure bump from 3.2 bar to 3.6 bar .

Now, before made many works, the distributor I think is ok, I think problem can be only this parts:

- primary fuel pump;
- fuel pump relè;
- fuel filter;

Do you agree?
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Porsche 924 2.0 na 125hp (1979) euro
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Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[gerben1986]

Hi,

Why do you think that that controll pressure is an issue?
Because I read this in the K Jetronic Workshop Manual:

[chris79]

Yes, this is correct range , but when k-jetronic run the controll pressure don't change every second from 3.2 to 3.6 bar, this cause a rapid modification of fuel delivery.
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro