Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 51,575
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
I love antiseize.. all my tractor plugs get it..
soundguy
soundguy
I know it's a gamble, but I do like my Excursion. I change the plugs every 30k and make sure I use anti-seize on the threads. It's a PIA, but it's the best preventative maintenance I know of to prevent the spark plug spitting. I mean, c'mon, how expensive would it have been back in '99 for Ford to have redesigned the spark plug holes in their heads to allow for more threads? Another issue is that due to the depth the plugs sit down into the cover (about 4"), moisture collects at the bottom of the holes the plugs sit in and the threads get corroded. With too few threads in the head, it's way too easy for someone to strip the threads trying to get the plugs out. That's the reason you'll see every mechanic using anti-seize on the plug threads when they change these plugs. If you make the mistake of waiting until 100k to change the plugs in one, you're almost guaranteed to strip out some threads in the heads.
If you do have a Ford gas engine, I'd make darn sure to change your plugs every 30k miles and make doubly sure that the plug threads are coated with anti-seize when reinstalled. Just be prepared to have some mechanics refuse to change the plugs though. Any who have been around a while are paranoid of stripping the threads and being blamed for the damage and, therefore, absorbing the cost to fix the damage. Every tech I know has the customer sign a waiver indemnifying them from blame if the heads strip. I just mention this because I have found that the 30k plug changes with anti-seize greatly reduces the chances of plug spitting. Of course you'll find nothing about doing this in any Ford manual though.