good day to kindly member
i have ford explorer 2008 116000 km odmeter 6cylinder
i have check engine light on coming code p0304 (missfire cylinder4) i change all spark plug and wire and coil and i reset code after three days comig engin light on please i need your help to solve problem....fahad

 

Misfire on a particular cylinder may be initiated by several different situations, ignition/spark is only one of them..

A bad/plugged fuel injector can cause the same condition.

You need to connect to a full data scanner and check the parameters.. guessing only cost $$$$$... Philip

 

ok some one talk to me and say maybe it cylinder head gasket

 

That also is a possibility, to eliminate that possibility you will need to

• Perform a pressure test of the cooling system, if it shows leak down
• Perform a combustion gas analysis of the coolant... if there is no indicator
• Perform a compression test, Warm engine, WOT (wide open throttle) Ignition and fuel cut, wet/dry..

Are you having to add coolant????

 

yes i add coolant from week to week

 

That would have been the first clue that should have ben included in your first post...

Confirm the HG leak with a combustion gas analysis to the coolant.
http://www.arrowheadradiator.com/hea...tion_leak_.htm

http://www.ebay.ca/sch/i.html?_nkw=c...2&_from=&_ipg= ...... Philip

 

that means i have leak in cylinder head gasket

 

That is the assumption, until you complete the test.......

I would not proceed further until I had result confirming leak.... Philip

 

you might try this. THe liquid copper stuff works great, and is compatable with antifreeze.

Bar's Leaks Liquid Copper Block Sealer

 

Mechanic in a can is risky business, especially in the heat of the Middle East, Overheating is a probability and engine damage is assured..... Philip

 

i have leak in cooling system so i need change cylinder head gasket
could you show my the picture of gasket and where i can buy copper liquid sealer in saudia arabia and how i can use it..

 

is this liquip copper parmintly solve for this problem

 

yes mr aquanut your talk is right so now what i can do it open cylinder head gasket and replace it only

 

You must be serious about this and follow the steps I outlined to confirm the condition. Once confirmed the only option would be to remove the heads and replace the head gaskets in an orderly and prescribed manner, there are no short cuts to a good job....

I do not know what skill level you have or if you are even capable of such a job. It may be best to locate a confident and capable local mechanic....

The version of engine you have also makes a difference in how you would proceed... OHV (overhead Valve) or OHC (overhead Cam).. Philip

 

i check with big local work shop and they clean all throtle and injactor but they replace injactor from cylinder4 wicth have missfire to cylinder5 and i have p0305 code thats means missfire in cylinder 5 and come back p0304 thats means missfire in cylinder 4 i guess that would be injactor fulire wich i take it from cylinder 4 but there is something else coming with injactor fulire ... could any one please help me.......