Preventive Maint

[90lincoln]

I need to know what the diferences are between the crankcase ventilation filter and the crankcase emissions filter. and if they are the same where is it? would it happen to be that tighyly compacted steelwool under the PCV would it? if not I need to know where so I can replace it.

I'm also getting some crappy fuel miliage, so I think I'll replace the plugs. I replaced the spark plugs about 6 months ago and still look good, but they were some real cheap ones. Any recomendations?

I also replaced the plug wires at the same time with a set of lifetime warrenty ones from AutoZone. I replaced the Dist cap and rotor about the same time. I read that dist caps with brass contacts are much better, so I may get another cap and rotor. Any advise I believe the coil is the original. I might replace that as well.
I've read that 02 sensors can cause poor gas miliage. is that so? I doupt if they have ever been replaced. To bad they just can't be cleaned. expensive little bugers.

I have a 1990 Mk Vll LSC with 106K miles. I cleaned the EGR the Idle control valve, and the EVR filter. I've replaced the front airsprings and all four 0-rings at ea front selonoid. The air compressor/dryer combo are also new. I also put a new clutch in.
I've considered trying the SEAFOAM thing. I'll do the seafoam before I replace the plugs.
The car really runs great. I get alot of compliments on it. I would just like to get better gas miliage.
ANY ADVISE MIGHT HELP

 

[JoshMcMadMac]

The filters are the same. The PCV valve is behind the intake, near the firewall on the back of the engine. It is somewhat hidden, but not impossible to replace. The filter is under the PCV valve; your best bet is to pull it out and leave it out.

As long as the plugs were gapped properly (.048-.054) you should be fine. Expensive plugs are not the answer. Simple Autolite copper plugs do an excellent job.

I would leave the O2 sensors alone unless you are getting an engine code implimenting them.

Seafoam is cool stuff, and certainly isn't a bad idea if you intend to replace the plugs afterwards. It won't hurt, but may not net any major gains.

I would pull engine codes to make sure that there is not an underlying issue that you are missing, check the timing, and go ahead with the routine maintainance.