[Mimmi]

Hi and welcome.
Have you replaced spark plugs? Which spark plugs you use?

 

[coolcow37]

Hi and welcome.
Have you replaced spark plugs? Which spark plugs you use?

yeah i have they have the iridium ones ngk because the parts store didn't have the double iridium one i also have new coils installed too

 

[Mimmi]

You have wrong spark plugs. Replace them ASAP.

Use ONLY NGK DIL-FR7B-10G spark plugs and original coils.

 

[coolcow37]

You have wrong spark plugs. Replace them ASAP.

Use ONLY NGK DIL-FR7B-10G spark plugs and original coils.

you think it will solve my issue ?

 

[coolcow37]

You have wrong spark plugs. Replace them ASAP.

Use ONLY NGK DIL-FR7B-10G spark plugs and original coils.

i tried with another pair of coils for a different Saab and my misfire was still there

 

[Germaniac]

When checking/replacing the spark plugs, do check the spark gap too. Per WIS, the electrode gap is 1mm (+- 0.1mm, nom. 0.95mm).

 

[coolcow37]

When checking/replacing the spark plugs, do check the spark gap too. Per WIS, the electrode gap is 1mm (+- 0.1mm, nom. 0.95mm).

yeah i gaped every one of them to the proper spec

 

[Germaniac]

WIS says the fault can be the fuel mixture too lean/rich, insufficient compression, poor spark plugs causing incomplete compression. If the spark plugs are okay, the ignition coil might be the culprit.

 

[coolcow37]

WIS says the fault can be the fuel mixture too lean/rich, insufficient compression, poor spark plugs causing incomplete compression. If the spark plugs are okay, the ignition coil might be the culprit.

some one said that it the fuel pressure sensor so i ordered one of those but i think its because of the coils even though there new they are an aftermarket brand. i thought that its the ground but i threw a direct ground to the head and no change but thanks anyway

 

[coolcow37]

WIS says the fault can be the fuel mixture too lean/rich, insufficient compression, poor spark plugs causing incomplete compression. If the spark plugs are okay, the ignition coil might be the culprit.

you dont think its the ecu ?

 

[Mimmi]

Replace coils and spark plugs to original ASAP.

 

[coolcow37]

Replace coils and spark plugs to original ASAP.

will do already ordered them hopefully they solve my issue

 

[Germaniac]

Of course, everything is possible including a shot ECU, but lets not assume the worse things first.

Check the connector for dirt and pushed out connectors.

In the Opel forums (the Insignia uses the same engine, codename LP9), users are discussing about closing the spark gap to 0.8 - 0.7mm. I'm neither pro or against this "fix", but be aware that if you go this way you are strictly advised that you are doing it on your own risk. The coils might be done anyway, so you want to replace at least those throwing the fault code.

 

[coolcow37]

Of course, everything is possible including a shot ECU, but lets not assume the worse things first.

Check the connector for dirt and pushed out connectors.

In the Opel forums (the Insignia uses the same engine, codename LP9), users are discussing about closing the spark gap to 0.8 - 0.7mm. I'm neither pro or against this "fix", but be aware that if you go this way you are strictly advised that you are doing it on your own risk. The coils might be done anyway, so you want to replace at least those throwing the fault code.

alright thanks for the help ill keep you guys updated if it fixes the issue. thanks guys