Club 80-90 Forums

Please delete or move if this is in the wrong place.

Recently had my 1.7KY Engine Serviced, New Cambelt, Replacement (2nd Hand) Exhaust put on etc.

Noticed it kicks out a lot of dark smoke which hasn't shifted after a 100+ miles being done.
Is it worth putting a fuel additive in when I next fill up?

Asked my mechanic what he thought and he said just don't put cheap fuel in. Which I don't do already.

Cheers

After 100+ miles what is your oil level like not sure about the cheap fuel I personally have not heard of that but someone on here will definitely know

By dark do you mean blackish? Is so then it's unburnt/partially burnt fuel. Since it's just had cambelt changed it's possible that the injector pump timing is out ask mechanic to re-check it. Also worth having a look at the air intake side (filter and hoses) to check that there are no restrictions/collapsed hoses

muttleypup wrote:By dark do you mean blackish? Is so then it's unburnt/partially burnt fuel. Since it's just had cambelt changed it's possible that the injector pump timing is out ask mechanic to re-check it. Also worth having a look at the air intake side (filter and hoses) to check that there are no restrictions/collapsed hoses

Thanks muttleypup, yes it's a blackish smoke. Last mechanic i used is turning out to be pretty useless but i will ask the mechanic who does my car to have a look. Will the black smoke create more emissions and fail the emissions test on the MOT?

I would think if it's that excessive under load then yes it would probably fail just on a basic 'smoke test' but that aside something obviously isn't right after the recent work and if the air intake side is ok I would have someone check the pump timing