The #4 injector on my '86 22re refuses to seal for me <img src="/forums/images/graemlins/confused.gif" alt="" /> The seals are all brand new after I had the injectors sent out for flow balanced/cleaned. I didn't use any type of lubricant (other than gasoline) when installing the injectors. The first three are seal tight (using brake cleaner to squirt on all), but that darn 4th one always has a leak (really affects the idle when the cleaner is inhaled). So.. wondering what you folks would suggest to seal this up. Silicon gasket sealer, perhaps?? Other suggestions.