1999 Peugeot 406 no 1 and 4 plugs are always black while the 2 and plugs always is black too and fuel in it....

Car: Peugeot 406
Year: 1999
Variant: 1.8 turbo 8v

The 1 and 4 plugs has black carbon in it always and the 2 and 3 plugs has also black carbon and unburned fuel in it mouth..
I've checked the coil and it's ok..

Posted: Jan 10, 2021 (3 years ago)

Collins

Points: 1

Tried replacing the plugs checking the leads,is the car running rough,may need a few bits and emissions check tune up

Posted Jan 10, 2021 (3 years ago)

bustedknuckles

Points: 2,304

Could be valve stems/ oil seals worn or engine wear , check compressions

Posted Jan 10, 2021 (3 years ago)

whittingehame

Points: 37,708

I found out that my head gasket between 2 and 3 plugs just melted...
So I changed it and everything came back to normal...
Thank you guys for the response..

Posted Jan 12, 2021 (3 years ago)

Collins

Points: 1

Thanks for updating the forum , glad you got it fixed .

Posted Jan 12, 2021 (3 years ago)

whittingehame

Points: 37,708

This problem is archived

If you're having a similar problem please click below to re-post this problem, you can then customise it to suit your situation.

Join the community

Got a question? Can you answer other questions here? If so please...

Join our forums

1999 Peugeot 406 no 1 and 4 plugs are always black while the 2 and plugs always is black too and fuel in it....

More problems with the 1999 model year Peugeot 406