Saab 9000 - Page 148

Fault diagnosis 145
Diagnostic trouble code P0300 (contd.)
6
6 Check the compression
- Check the compression of each cylinder.
Is compression OK?
I
YES
I
Change all spark plugs and continue with
point 7.
I
NO
I
Continue fault diagnosis as described
·in
Service
Manual 2:1 "Basic engine".
7
7 Check the fuel system
- Carry out fuel pressure and fuel flow measure-
ment on the fuel pump and all the injectors.
-1s
the
fuel system OK?
I
YES
I
Continue with point 8.
I
NO
I
Rectify the fault and proceed to point 8.
Saab 9000
I