[h60vy]

read the code on my car with peake tool misfire cylinder 4 turned car off then engine management light went off when i started it again now ok ,where should i start? had new plugs fitted 2 months ago any advice would be great cheers h60vy

 

[xXNealXx]

I would start by looking for leaks in the vacumn pipes first and then investigate the coilpack and possibly re-checking the spark plug on that cylinder. Did your Peake throw up any other codes?

 

[h60vy]

no other code mate ,if it was a vacum pipe fault would the fault be there all the time? cheers for the input

 

[xXNealXx]

Well, some leaks don't show up as faults, but the symptoms are physically there like rough idling, jerking, etc.

 

[h60vy]

think i will give it a once over on the weekend thats if its not too cold and will post update thanks nealp

 

[h60vy]

update ; checked all hoses ok took the crankcase ventilation valve off checked diafram was ok the only thing i could find wrong was that the oil dip stick casing had no o ring , had misfire the other day again but was different cylinder #6 this time no other faults when read the codes , what do think i should do next cheers h60vy

 

[Ronnie]

Hmmmmm http://www.bimmerforums.co.uk/forum/f77/2004-x3-2-5-engine-light-on-and-t6784/

You got Bremi coils?

 

[h60vy]

i have 5 bremi ones and another one with no name on which is on #2 cylinder, the engine starts first time every time only misfires once and a while,when it does misfire if you turn it off then start it again its fine it only misfires when its been standing a long time ie 8 hrs could it be the hydraulic lifters cheers

 

[Ronnie]

i have 5 bremi ones and another one with no name on which is on #2 cylinder, the engine starts first time every time only misfires once and a while,when it does misfire if you turn it off then start it again its fine it only misfires when its been standing a long time ie 8 hrs could it be the hydraulic lifters cheers

Possibility



You losing any coolant? :confused

 

[h60vy]

no not a drop ronnie . cheers

 

[Ronnie]

What plugs are fitted? Also what condition are the rubber ends on the coils?

 

[h60vy]

plugs are NGK R BKRGEQUP ,only been in 3000 miles ,what signs of ware ,corrision should i look for on the rubber ends of coils? so i can check ronnie cheers !and can you replace just the rubbers thanks again h60vy

 

[Ronnie]

You have this type of coil, see number 2 here http://www.realoem.com/bmw/showparts.do?model=BN12&mospid=47615&btnr=12_1051&hg=12&fg=05

It's the later coils that are troublesome so you "should" be OK, see here http://www.realoem.com/bmw/showparts.do?model=BN12&mospid=47615&btnr=12_1104&hg=12&fg=05

 

[h60vy]

update my car hasnt misfired .........fingers crossed