New life for a neglected YJ - Page 5

jeepsurf · 03-04-2008, 03:42 PM

Quote:

Originally Posted by czjeeper

That's pretty normal on an engine that's sat for a while.
Condensation builds up and you get a superficial (usually) rust ring just above the compression ring.
After it spins with the wrench, shoot some more light oil in there and spin it again with the plugs out. Once the starter can spin it w/out "dragging", change the oil and fire it up. Again, I would NOT try to start it with that nasty old oil and filter. Change the oil and filter, start it, let it run till hot, and change it AGAIN.

I've changed the oil, oil filter, new pulgs, wires, cap, rotor, fuel and air filters, dropped the gas tank and cleaned it out. Also changed to coolant and fushed it. I put marvel mystery oil and turned it over. It should be ready to fire.

joe's_yj · 03-04-2008, 04:13 PM

sounds like its that time. Check the transmission, tranfer case and diff fluids before you go for a drive

joe's_yj · 03-05-2008, 05:32 PM

get it started?

Ctskip · 03-05-2008, 10:11 PM

How much oil did you put into each cylinder to begin with? Enough I hope. Figure it has to coat everything in the cylinder . Wall, Piston. Have you checked the compression. Hold your finger over each plug hole and turn her over with the key to see how it pushes your finger away . Hopefully it'll be about the same for each cyl. Maybe you can do a compression check with a guage? if not it's no biggie. Just add a little more MM about a shot glass full to each cylinder and crank her over with no plugs . Install plugs and fire her up. Good luck. Let us know about the compression test using your finger.
Skip

jeepsurf · 03-06-2008, 10:45 PM

Quote:

Originally Posted by joe's_yj

get it started?

Nope. Tried all day. Got compression, got spark, sprayed ether in the throttle body. Nothing it'll turn over all day. So then I was thinking electrical. Then I noticed when I turn the key to on, no lights or buzzer. I never started a yj before but I'm sure there's something suppost to happen on the dash. I checked the fuse panel under the drivers side dash. The fuses were all old and falling apart so I replaced them. Still no lights on dash. My buddie says there should be a fuse block in the engine compartment. I'm not seeing it. His is a 95, and mine is a 90 so maybe a little different. I guess I'll finally give in and go buy a chiltons. Any advice?

**czjeeper** · 03-06-2008, 11:02 PM

The ECM may be screwy....
Also, with the fuses all messed up, you may have some sort of corrosion/short/ground problem.

BlackRhino · 03-06-2008, 11:02 PM

There definitely should be a fuse block in your engine compartment. In this picture of my Jeep (it's a 91 so yours may be different) you can see the fuse block just in front of the battery on the passenger side.

jeepsurf · 03-07-2008, 01:55 AM

Quote:

Originally Posted by BlackRhino

There definitely should be a fuse block in your engine compartment. In this picture of my Jeep (it's a 91 so yours may be different) you can see the fuse block just in front of the battery on the passenger side.

Nope. I dont have that nifty little fuse box. I wish I did. I need a chiltons. I'ma get one tomorrow

Ctskip · 03-07-2008, 07:37 AM

If you have compression and you have spark, the only thing missing is fuel. Are your plugs wet with unburned fuel? put a plug in the wire and ground the plug to something anything metal and look for spark. With fuel and spark along with compression, there should smiles. Now look for timing to be the culprit. Do you have a way to know if the spark is strong enough? You mention cleaning out the fuel tank. Have you tried squirting fuel directly into the carb? If it will turn over easily using the key, you have juice to the motor. Recheck the timing and the spark. Is it nice and blue? or is the spark white? You need good spark. How do you know you have spark to the plugs? Check the fuel system. Remember it only takes three things to run, Fuel, spark and compression. Good fuel ,good spark and decent compression. Time it correctly. Keep trying. Maybe it's the fuel pump???? clogged fuel line? Keep it up, Ctskip

Ctskip · 03-07-2008, 07:42 AM

I say it's a fuel problem. Your plugs should be wet with unburned fuel, if you have no spark.

Dry plugs mean no fuel getting to the cylinders.

Wet plugs means no spark. Which do you have? wet or dry plugs?
Chiltons are almost useless. Save your money

**docneon** · 03-07-2008, 09:18 AM

me's starting to wonder why this sat for six years...

I'll be following along. Hopefully with the experise of the board, you'll have it running in no time

cheap5.0 · 03-07-2008, 09:19 AM

Quote:

Originally Posted by Ctskip

Chiltons are almost useless. Save your money

They are great if you use them like a road map to get you where you need to go though. I found it to be VERY useful when i started trying to find things and where they were located...

**rustywrangler** · 03-07-2008, 09:21 AM

Quote:

Originally Posted by Ctskip

Chiltons are almost useless. Save your money

Poor advice IMHO. The best is always the FSM but if one cannot get a FSM, using a combo of the Haynes and Chiltons is the best route. The Chiltons electrical section alone beats the Haynes manual.

themonkeyman · 03-07-2008, 09:24 AM

For your fuse box, check the outboard side of the battery tray. Thats where mine is, granted mine is a 6 cylinder, but they might be the same.

Good luck man, we are currently facing similar problems, mine won't fire either, I've got no spark, so, hello ignition re-wire!

**rustywrangler** · 03-07-2008, 09:27 AM

Quote:

Originally Posted by BlackRhino

There definitely should be a fuse block in your engine compartment.

The engine compartment fuse block did not come into play untill '91, prior to that, everything went thru fusable links on the firewall or the fuse block under the dash.