R5FORD

iTrader: (1)

Hi guys,

Got a strange one when im accelerating hard and my drivers window is open ican occasionlly hear a pinging/ ticking noise never heard it before and only strted happening since last friday.. It almost sounds like theres a stone in the tyre but as it happens irregular its not that so any ideas?

Now iv checked my wheel nuts and checked for loose wiring etc and all good..

I have been told that it could be pre det and have come to the conclusion that it may be down to spark plugs..

Heres a quick write up i did on FRSOC

ok I just remembered something.. when i first started modifying my RS I had a problem with idle and the car had a very strong smell of petrol but the spark plugs seemed as the car was running lean.. and I'm pretty sure the tips of the spark plugs had burnt of down to this.. I then swapped them with the spark plugs put my old ST they had done 45,000 kms.. Now I thought id better put my original RS ones back in forgetting that they had been burnt and i did this yesterday today I'm still getting the pinging noise at high rpm/speed.. and boost issues.. it feel very hesitant and almost like the boost is blowing the spark out but only at high rpm..


Heres one of the new RS ones ( when the car was smelling of fuel but spark plugs indicate lean running)







Heres a pic of my old ST ones and my New RS ones when I initially changed them about 1,500 kms ago




as you can see the one at the TOP was from my ST that had covered 45,000 kms and the below one is from the RS which had prob done about 500 kms with rough idle but about 3500 kms in total the RS one seems to have burnt the electrode and I was having boost issues in 3rd and 4th gear today it felt very hesitate at the top of the rev range..

Now could this pinging be pre det and be happening on the ST plugs because they have been used for 45,000 kms and be doing the same on the RS plugs because there burnt out? or could it not have anything to do with it?

I could just go and buy a set of plugs but there not cheap here and don't want to be throwing money away if the ST ones are ok., they are the same plugs according to the part numbers and ran fine before I was really giving the car some stick last friday night.

sorry about the essay


any ideas guys? could it be do to with the plugs or nothing to do with them

Rax

iTrader: (1)

Do you know what gap they are supposed to be ? If its modified then I dont suppose the original gap of the plug would be the same as you need now.

R5FORD

iTrader: (1)

Have no idea mate.. Maye something i should check

Rax

iTrader: (1)

From what I have just read the NGK IFR6B comes pre gapped.The Denso IKH20 come 1.1mm = .43.These were listed for ST and RS.I would speak to a tuner to see if the standard plugs are up to the job with the mods you have if thats what you are using.Have you never had this problem with any of your Cosworths ?.I had it once with it blowing the spark out.New Ngk bkr9eix gapped .65 all sorted.This info maybe of no use but I hope you get it sorted

Lambchop

iTrader: (1)

Not to do with your issue but I didn't know you had a green frs there. Was it sold there or was that imported? Is that why you sold the blue one

GVK.

Is it modified? Shit fuel ?

R5FORD

iTrader: (1)

yhep mate sold the blue one and the day after bought this one.. Ford imported 315 Focus Rs into Australia and this was the last brand new one for sale

stayed standard for a whole 400kms and 390kms of that was the drive home from the dealership

R5FORD

iTrader: (1)

nope never had any spark plug issues before

I don't think that info helps mate as each plug is different s i might just ago it to the same as the original ford ones..

thanks anyway mate

R5FORD

iTrader: (1)

yhep 400hp mate.. I thought may be bad fuel aswel so going to put new plugs tomorrow after i refuel

R4N SS

iTrader: (6)

love the reg plate

Lambchop

iTrader: (1)

Awesome mate

If you dont mind, how much did ford sell them for there?

R5FORD

iTrader: (1)

varied in each state mate.. some in perth were advertised at $80k

they were advertised between $62-67k here in Vic..

I don't think there was any lower than 60k but i heard one guy paid 57k so not sure..

I paid just below our advertised price but traded in my ST for good money and bought a Fiesta at the same time so expected a very good deal.

Lambchop

iTrader: (1)

Cheers, you know why I am asking

Fucking silly expensive really!

R5FORD

iTrader: (1)

yhep i know

check your pm mate.. going to shoot you one over