Engine is developing a skip

[JohnW63]

After changing the fuel filter ( which appearantly was quite clogged ), and the MAF, my '95 SHO has been running better and smooth. In the last week or so it has developed a little miss or skip at random times. I checked the shop manual and found there isn't a second fuel filter, so I am wondering what to check for. I replaced a spark plugs a couple of months ago, but not the wires. I need to replace the plug well seals, because some amount of oil is collecting around the plug. What are symptoms of the timing belt wearing out, because I havne't changed that either. The car has over 100K miles.

What is the best deal on a "real" code reader for my car ? I think I'm going to need to get one.

JohnW

 

[stevetatro]

We don't need no stinkin' code readers! Seriously, even some of the "real" code readers just flash a light or emit a beep, so you still have to count. Unless you really want to spend the $$$ that spells it out for you. I've always found the paper clip & CE light method works great!

Anyway, I doubt the "skip" is in the fuel system. It's almost always an ignition problem, so that indicates plugs, wires, and like you mentioned, oil in the plug wells. Especially with no codes, this is the direction I would go if I were you.

If you drive with oil in the plug wells for awhile, there's a good chance you'll ruin at least the plugs (which you said you replaced) and even the wires. When you replaced the plugs, did you use the OEM Motorcraft plugs or some other brand? Many folks have found that only the Motorcraft plugs fit/work properly.

When you finally get around to doing the wires, which it sounds like you should, check out the Ford Parts Network. They usually have the best prices on that kind of crap. Oh, and if you want to ensure the new wires last for some time, don't buy aftermarket brands of those, either!

As for the timing belt, I don't think a worn one would actually cause any symptoms you could feel by driving. You should get it replaced pretty soon, though, or it'll snap and leave you stranded! Luckily, it shouldn't cause any damage when it does because the wonderful Yamahammer is a non-interference engine.

Later...and good luck!