Hello,

I have an 06 Focus 1.8 Diesel. Recently it has suffered from a lumpy engine when started from cold. When I rev the engine it is very rough and blue smoke poors out of the exhaust. Also the MPG has dropped dramatically from 54 to 47 MPG?

It has been into the garage and they diagnosed low fuel pressure. It was traced to the fuel pressure sensor having a poor conection which has supposedly been rectified. Also they updated the software as this had never been done.

It still has poor MPG, below 50 MPG!

I throw this open to the floor, has anyone else had this problem or any ides of the cause/solution...

Fingers Crossed

Casper

Hello,

I have an 06 Focus 1.8 Diesel. Recently it has suffered from a lumpy engine when started from cold. When I rev the engine it is very rough and blue smoke poors out of the exhaust. Also the MPG has dropped dramatically from 54 to 47 MPG?

It has been into the garage and they diagnosed low fuel pressure. It was traced to the fuel pressure sensor having a poor conection which has supposedly been rectified. Also they updated the software as this had never been done.

It still has poor MPG, below 50 MPG!

I throw this open to the floor, has anyone else had this problem or any ides of the cause/solution...

Fingers Crossed

Casper

your motor oil is leaking past your piston rings and getting into the engine cylinder and mixing with your fuel and ultimately burning along with the gas. That leakage is getting compressed with the gasoline in the combustion chamber and the burned oil makes the blue smoke. Your car probably also doesn't have as much power as it used to and is probably running rather rough too. If it isn't yet it wont be long and it will evetually cause the oil to break down loseing its viscocity and not properly lubricateing the pistons. Because what is also happening is some of the gas is leaking past those rings too in the opposite direction and mixing with the oil in your crankcase and thinning it out. When this happens the engine will overheat from excessive friction and it will seize.

it wont be cheap a decent garage should have seen the blue smoke and should know what to check honestly they arent cheap but get it to either a volvo or ford garage before you end up needing a new engine

Thanks for the advice.

The blue smoke is only seen on start up, then every time the car is started afterwards there is no smoke or rough running?

Worryingly it has been into a Ford dealer who said they could only find the fault with the fuel pressure sensor?

Thanks

Casper

Thanks for the advice.

The blue smoke is only seen on start up, then every time the car is started afterwards there is no smoke or rough running?

Worryingly it has been into a Ford dealer who said they could only find the fault with the fuel pressure sensor?

Thanks

Casper

no offence but ford couildnt find the engine without a map take it to a diesel specialist and they can advise you better but for what its worth the mpg isnt that bed its winter youre using more electrics the price of diesel has gone up etc

hi

i too have 1.8 tdci diesel it too smoke blue when cold only,and very bad, should be taking to garage on monday hopefully to find out problem. ill let you know what they say or if any work is to be done.my mpg has fallen from 40 to 35.8 around town.tou say low fuel pressure when you had that replaced did it stop smokeing?thanx