hi all
my 1.6 focus is sick what happened was. i was race a golf home saturday afternoon and all of a sudden it started running on 3 and missing like fook so i took it back to work to sort out ive fitted a aftermarket coil pack ht leads and spark plugs started and everything was fine till i went to drive home now when u rev it above 3 grand it sounds like a old car pinking .i need this car at the mo as my rs is not ready yet CAN YOU HELP.

 

the coil pack was one of them cheap euro parts one has anyone fitted 1 and had problems

 

Are you using BOSCH spark plugs ?, if so llok around the base of the porecalin for leakage marks, very common in zetec engines with these plugs had it myself too.
2 out of 4 plugs were duff within 200 miles.
tabetha

 

sorted misfire (i think)but now it sounds like pinking only under load
if you rev the engine out of gear light i cant hear it but there a misfire at about 5 grand
under load there a rattle between 2.5 and up like pinking
has anyone had a problem. its something in the head maybe valves/cams/followers/valve spring help please as its booked in at ford monday morning and havnt got the money spare for ford prices
it cant be the knock sensor as the mk 1 1.6 hasnt got one

a check picked up misfire on number 4 and been to 4 garages and 3 checks and no one can help

 

new spark plug and leads fiitted and distributer
the car has only covered 52k and always change the oil. could it be a sticky valve?
one last thing first of all i took the lamber sensor off and cleaned it but the next day i took back out and found that it was covered in black soot which it wasnt like when i first took it off

 

what would happened if the cam belt streched so that when under load theres a small amount of play making the car sound like its pinking or there was play in the the adjuster
the car has had a hard live the last 20k

 

would be very hard to stretch cam belt as it would only really stretch at one point not the whole belt, may have jumped a notch on the belt putting your timing out a bit, or check your fuel injectors for right pressure and fuelling it happened on my cossie, nearly whipped the head off but it turned out to be a bust injector??

 

i changed the sparks around first to check, then moved the injectors into difo ports to check them too, each time pulling the leads off to narrow down which bore is missing, hope this helps

 

slack in the cam belt is common on zetecs, normally the slack ends up between the two cam pulleys

 

should i have new cam belt done as the cars done 52k

 

1.6 focus is a zetec-se remeber guys, not a mondeo/escort type zetec-e.

I'd suggest that if your lambda sensor is coming out completely sooty that quicky then you're running very rich (or firing VERY late on that cylinder) and probably ruining the CAT. Is it a silver or black top se? (marked S or SE?).

Chris

 

check your getting a spark at the leads cos the coil packs can break down

 

Hi, try using Shell V power as I had the same problem. I had changed the plugs, leads and coil pack, it ran better but still occasionally had a slight missfire.Today I needed petrol and only use Shell regular as I don't trust supermarket fuels. I gave Shell V power a go and believe it or not the power is back and no missfire.! (I WAS ACTUALLY GOING TO POST A QUESTION ON THIS FORUM TO SEE IF ANY ONE ELSE USES IT OR HAD THE SAME PROBLEM AS ME),when I saw your plea for help. So I hope this help's.
Cheers.