Rep Power: 0

I have a ford focus lx 1800 on a V Reg it has lost a lot of power when accelerating, the car revs as normal when you accelerate but not got its usually power there, also not often but every now and again my speedo will stop working and then the car becomes juddery when changing gear until the speedo starts to work again.

 
Rep Power: 613

sounds like an eletrical problem

 
Rep Power: 645

check you o2 sensors and cat, mine svt done the same at thats what the problem was. plus ford do a warranty up to 140k if you can fails etest they replace the parts free of charge

 
Rep Power: 0

How old is your focus? How many miles? Does it happen at a certain speed (ie: 70mph?) Its possible your fuel injector is clogged. Might not hurt to get some fuel injector cleaner and put it in your gas tank next time you fill up. Some decent brand names are STP and GUMOUT. Look for it at a car store like www.autopartsway.ca.

 
Rep Power: 0

My mechanic suspects its the fuel injector. He's charging me quite a bit for the part though. Thanks JayMD. This is very timely. The GUMOUT injector is way cheaper than his estimated cost. I might as well purchase from autopartsway.ca instead and just pay the mechanic for his service.