Hello all..
now i could post this on a car forum but i cant be bothered joining yet another forum so i thought i'd run this by you guys.
I have a 2001 focus 1.6 zetec that after a long run for the family holiday started to misfire on Cylinder No.3
I change the coil pack and ht leads (this had happened before) but the problem was still there.
the spark plug in no.3 is covered with black sooty crap.. and after being replaced it soon builds up again.
my mechanic says that it's probably a burnt valve.. and when i hold a peice of paper to the exhust it sucks it towards the exhust pipe and then blows and so on.. so i guess his diagnosis is correct.
But this has me wondering maybe the valve is stuck (i assume open) .. do any of you guys no if a stuck open valve will have the same symtoms as a burnt valve?
and if the answer to the above is yes.. can i add deisel to the crank case prior to an oil change to try and free the stuck valve?
i've thought about a new head but my Mech says that the new head will probably cause the bottom end to go plus the cost of the job will be more than what the car is worth.... same goes for a engine swap.
so i guess i'm hoping the symtoms for a stuck valve are the same as a burnt valve and there may be some hope?
now i could post this on a car forum but i cant be bothered joining yet another forum so i thought i'd run this by you guys.
I have a 2001 focus 1.6 zetec that after a long run for the family holiday started to misfire on Cylinder No.3
I change the coil pack and ht leads (this had happened before) but the problem was still there.
the spark plug in no.3 is covered with black sooty crap.. and after being replaced it soon builds up again.
my mechanic says that it's probably a burnt valve.. and when i hold a peice of paper to the exhust it sucks it towards the exhust pipe and then blows and so on.. so i guess his diagnosis is correct.
But this has me wondering maybe the valve is stuck (i assume open) .. do any of you guys no if a stuck open valve will have the same symtoms as a burnt valve?
and if the answer to the above is yes.. can i add deisel to the crank case prior to an oil change to try and free the stuck valve?
i've thought about a new head but my Mech says that the new head will probably cause the bottom end to go plus the cost of the job will be more than what the car is worth.... same goes for a engine swap.
so i guess i'm hoping the symtoms for a stuck valve are the same as a burnt valve and there may be some hope?