We have all heard the horror stories of blown plugs, stuck plug parts in the heads etc... So when did ford fix the issues? How did they fix them? This is just another part of researching the purchase of a class c for us. ( knowing if the issue was fixed on 2007 and after etc....stuff like that) I am thinking that when we do buy a class c to just have the plugs changed anyways by the dealer

I have an '01, and seems like it was said they fixed it before that.

The threads in the head were too short and they fixed thatThe threads on the plug were too long and would carbon up so they wouldn't come out and they fixed thatThen on the 3 valve they had a two piece plug and they fixed that

I have a 1999 Ford V10 that is supposed to be one of those that has the above mentioned problem. It just rolled over the 100,000 mile mark and I had the plugs replaced for the 1st time. My mechanic said that there was no problem with it. I have no idea how many older Ford V10s have had this problem but several past posts on this forum have asked for survey responses as to who has had this happen but got very few responses.Mine may blow tomorrow but I'll worry about it when and if it does.Dave

I have an '04 and I changed mine at 127,??? And had no problem.

I too had the 2004 three valve engine and it had over 100K on it when I upgraded truck in 2010. No issues...Roy Ken

V10 spark plug issues? | Good Sam Community

23 Replies

dbates
Explorer
Mar 28, 2014
I have a 1999 Ford V10 that is supposed to be one of those that has the above mentioned problem. It just rolled over the 100,000 mile mark and I had the plugs replaced for the 1st time. My mechanic said that there was no problem with it. I have no idea how many older Ford V10s have had this problem but several past posts on this forum have asked for survey responses as to who has had this happen but got very few responses.

Mine may blow tomorrow but I'll worry about it when and if it does.

Dave
K_Charles
Explorer
Mar 28, 2014
The threads in the head were too short and they fixed that
The threads on the plug were too long and would carbon up so they wouldn't come out and they fixed that
Then on the 3 valve they had a two piece plug and they fixed that
RJsfishin
Explorer
Mar 28, 2014
I have an '01, and seems like it was said they fixed it before that.

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V10 spark plug issues?

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