docdgt@com

In my 1997 ls 440 (Gen II) at 110,000 milesI decided it was time to change some of the ignition parts due to their age, not the fact that it was running erratically; in fact, I had no complaint at all as it seemed to be running as well as it could run.

I had the distributor caps and rotors replaced, new Denso ignition wires, and new NGK Iridium long life plugs. I must say that after examining the old parts I was surprised! The plugs looked good considering their age and use and the only thing that seemed even remotely off was that the rotors showed a little black pitting. No doubt the previous installation could have gone on for many miles. Since having the new parts put in it doesn't run a bit better than it did previously; I think it is a compliment to the parts it had as originals.

At what ages and mileages have you replaced your ignition components?

python

iTrader: (4)

140,000 i replaced everything, the casing was cracked on some of the wires but everything else looked ok...make sure to buy oem stuff from the dealer, especially the wires as they come with the plastic routing to hold the wires in place

PK_Celsior

iTrader: (18)

i think my 1995 has only 5k miles on the ignition system. everything been pretty much replaced on my car, because wear and tear. recent thing i change was the starter, because it took a poopiee lmaoo

RA40

iTrader: (6)

I did mine at the suggested intervals. 60K for plugs and like yours, they were clean. Ignition wires, cap, rotors when I did the timing belt at 97K miles.

omarg

my 93 has the original plugs and wires at 260k. I checked them and they seem to be in fantastic condition. i was looking through service records and the dealer checked them at 180k when the timing belt was done and only changed the caps and rotors because the wires and plugs were still good! My car has run premium since day one, so i think that might have something to with it.

Brandicus

iTrader: (6)

wow omarg, i thought i was late getting 190k out of my originals. nice job

deanbrown

202K on mine and I changed them last night. They were powdery light gray on all 8, very nice, no oil or burning. These were the originals from day 1.

I use mostly regular gas too (for the last 100K), though never get unfamiliar brands (try to stick to BP or Sunoco).

-Dean

docdgt@com

Boy, nice going with the mileages! It seems that I pulled the trigger too soon.
Judging by what you state, mine must not have even been broken in!

What prompted this was that there was some oil drips that they said was caused by the failure of the valve cover gaskets; the mechanic said that at least one of the plugs had been exposed to this oil from said leakage on the rubber plug protectors, so you now know as much about it as I do.

I use only 97 octane and have done so for over a year with nary a bit of trouble with anything. In town it will yield about 19 - 22 mpg and on a highway trip the mileage will vary from 23 to 27; I have yet to reach 28 but am trying.

Thank you for your interest.

deanbrown

I don't see any problem with there being oil on the top end of the plugs, there is sludgy stuff there on most cars. You have to be careful when changing the plugs though to blow that out as much as possible to stop the crap falling into the cylinder.

Don't remember what its like on the 1UZFE, but on most engines you can tighten up the cover bolts - and that would probably stop the leak.

-Dean

docdgt@com

omarg: I have tried to send you a private note but I don't know how to send it; I don't understand "BCC recipient" so I can't send it. Will send parts today via US mail.

docdgt@com

omarg:

Parts sent to you today via US Post Office. Shipping cost: $6.94.

Let me know what you think of them; I think they are pretty nice as stated before.