Oil Leak At Ignition Coil And Valve Cover

[jsmith20]

Anyone else have this issue?

passenger bank, closest to the firewall.

'99 LS400 with 85k. Bought is at 83k and noticed it after the first long trip.

Took off the coil, cleaned the seal and all surfaces, replaced and torqued (screws were tight before I removed).

Oil leak is back. Do I need to replace the coil or can I just add some RTV/gasket silicone?

Thanks

[steve2006]

Hi,

There is an oil seal (Gasket Spark Plug Tube p/n 11193-16010 $3.60) which prevents oil from entering the tube where the spark plug/coil fits which has probably failed,looking at the exploded diagram it would appear these fit from the outside of the valve cover so you may be able to hook the old one out and slide the new one in without removing the valve cover but if you have a manual I would check this 1st ( there are some cheap CD ROM manuals on ebay).