Oil and Filter Change


Plugs, Cap, Rotor, Wires



Wire Routing - Click to Enlarge

4X4 ICON 2000 - 2008 The DVD! - Click here for details!

4X4 ICON 2000 - 2008 The DVD!


Oil and Filter

While my six-year-old stood around asking his usual 20,000 questions about the job, I changed the oil and filter.  He got a lesson in basic maintenance and I got a good buddy to keep me company while I did an easy job that is otherwise fairly boring.  One filter and 6 quarts of Castrol later, we called it done and went in for supper.

CastrolFRAM Tough Guard FilterFRAM Tough Guard Filter


Plugs, Cap, Rotor, Wires

I finally got around to changing my plugs, cap, rotor, and wires.  I'm not going to admit how long the wires were in place, but with 130,000 miles on my Jeep, I decided it was time to replace them all.   No sense tempting fate.

Autolite Resistor Plug 985 .035 OE Style
Mopar CABLE PACKAGE, Ignition 8350 7178
MoPAR CAP, Distributor 5602 6876
 ROTOR, Distributor 5602 7019

I bought the parts, with the exception of the plugs, at the dealer.  I figured that since the ones I had were manufacturer parts and they had lasted so long, why fool with a good thing?

Assembly - Click to Enlarge

My history with vehicles predates most peoples birth so I have a long history of messing with gapping points and installing condensers.  What a joy not to have those to deal with!  In their stead, there was nothing more than the reputation of the number one plug to confront, and some sticky plug wire boots to wrestle off. 

Wire RoutingWire RoutingWire RoutingWire Routing

I decided to take no prisoners - grabbed a drop-jaw pliers and twisted off all the wires, one at a time, after carefully marking them to their respective locations and routing, and laying out the new cap and wires in the same pattern.

Firing Order - Click to Enlarge

One of the wires came off in pieces, the others are probably compromised by the rough handling and their sheer age.  I unscrewed the first of two retainers that hold the cap in place.  It came out nicely.   I started to unscrew the second and it snapped off like a piece of dry spaghetti!   DOH!  This is not good!  I finished the disassembly while bracing myself for a troubled finish.

When I got the cap out of the way, I struggled to retain my civility when the kids came by to see what I was doing.  No sense hurting their feelings with my bad attitude.  I got myself calmed down and located a center punch.  Put a mark on the center of the broken screw.  Got my drill set up with a little bit, and started drilling.  The screw must have been hard metal because the drill didn't even touch it.  I got a slightly larger and much harder bit and tried again.  This time it went through it like butter.  Just when I thought I was home free, the hole on the distributor housing broke off!   Double-DOH!

DOH!  Cap Screw hole cracked off! - Click to Enlarge

Now I had the broken screw out, and almost nothing left to fit a new screw.  Why in the world did they use screws?   The Volvo's I used to work on had clips like the ones that hold the cover on the stock air filter box, and they never broken, were very reliable, and easy to handle.   That's Bosch for you...  Oh well here I am with a broken distributor housing and a job to drive to in the morning...

I decided that I might as well put the plugs in and reassemble everything as best I could, then deal with the fastener for the cap.

I took the old plugs out one by one, working from cylinder 6 to cylinder 1.  No sense in continuing my bad run of luck by starting with the infamous cylinder 1 plug!  Each plug came out with little problem though they were a little tight.  The beauty of the right tools, experience, and some leverage made the removal process pretty easy.  The Jeep is just a little too tall to get enough leverage by standing on the ground so I found myself up on the front bumper to get at it.

I checked the gap of the new plugs before installing them - they were all spot-on (.035).  I put a dab of anti-seize on each as I threaded them back into place and snugged them down.  Routine.  Finally I reached the number 1 plug.  It is tucked behind the A/C compressor.  But the plug socket snaked down in nicely, the universal adapter snapped in place, and the extension put the ratchet in a great spot to twist out the plug with no more trouble than the other five.  Bah!  Must be a bunch of sissy girls working on their Jeeps that made that rumor up!  (See you on Jerry Springer, ladies!)

With the last plug in place, I dropped the cap into place on the distributor after first putting the new rotor in place.  I ran the wires to their respective plugs and made sure they were all properly seated and threaded in the holders, like they came from the factory, nice and pretty... 

  • #1 goes from the cap to the plug and the wire goes in the lowest slot on the front loom holder
  • #4 goes from the cap to the second lowest slot on the front loom and runs forward to the end of the loom and then ducks behind the loom and up to the middle loom holder which has two rows, then to the plug
  • #2 goes from the cap to the top slot on the front loom and then to the plug
  • Coil goes from the cap, down between #1 and #4 to the coil, routed so the wire does not touch anything, away from the block
  • #6 goes from the cap to the top slot on the rear loom and then to the plug
  • #3 goes from the cap to the middle slot on the rear loom and runs to the rear then ducks behind the loom and comes up to the middle loom holder and then to the plug
  • #5 goes from the cap to the bottom slot on the rear loom and then to the plug.

For this to work, you have to have the correct wires connected to the cap in the correct positions. You might be able to tell something by the shape of the ends in the pictures on my write-up; I figured out which wires went where by copying what was in my Jeep, probably factory original or set up by the dealer when it was last done...

Then I threaded the remaining good screw holding the distributor cap in place.  My first thought was to use a long screw and nut that I had lying around to replace the one that would no longer thread in because the hole to hold it was gone...  I found the nut and bolt too short and momentarily considered how my wife would feel about driving me to work at 5:30 AM...  Then it occurred to me that I just might be able to hold the cap in place temporarily with a wire tie.

Wire Tie Temporary Fix
Wire Tie Temporary Fix Detail - Click to Enlarge the Pain

I retrieved one from my supply store and soon had the distributor cap snugged down and seemingly secure.  I reviewed the plug wiring pattern and then fired up the Jeep.  I was very happy to see it start right up, run smoothly, and not make any untoward noises or unexpected behavior.  I will run down to one of the hardware stores in the next day or two and find a nut and bolt that will be suitable to replace the temporary wire tie that currently holds the cap in place in the front.  Another little job out of the way!




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