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Thank's very much for the help guys.
So far I replaced the spark plugs. The color it's the same on all (brown).
Replaced also the igniter.
Checked the alternator output voltage and it's ok (13.8 on idle)
Connected some grounds from engine to chassis.
The car now it's running better but still not as it is to run.
Today I will install a wideband to check the afr.
I'm not sure what the afr should be (12 or richer at fool boost ?)
I will also borrow a Maf to check out.
Can it be also the lambda sensor ?
I'm also thinking replacing the fpr.
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