More troubleshooting (and trouble)!

First things first

Troubleshooting the cutting off/not restarting issue.

I adjusted the timing by vacuum reading. I adjusted it until I got the highest vacuum reading, then backed off a little bit. I still only have 10# of vacuum. The miss came back when I did this.

Next, I tested the coil using a method off of WillysMJeeps website. The coil tested out fine cold.

I took a test drive of about 10 miles or so to get her good and hot – there wasn’t any more power than before, so I moved the timing back until the miss was gone.

Then I tested the coil while it was hot – it tested fine then too.

I was going to check my rear differential, but I couldn’t get the pinion nut off – I guess the rear diff needs work, not just a loose pinion nut, because it was definitely tight – the impact wouldn’t take it off.

I checked the generator output – it is making 25v at idle, and 25,2v at ~3000rpm – not good. It is keeping the batteries charged, but it is also supposed to be 27-29v @ 3000rpm. I am trying to figure out why I keep blowing headlights, and this is one of the possibilities – the generator putting out too much voltage. I disconnected the battery and pulled the cover off of the regulator. I was hoping that it was something obvious – the points weren’t stuck, but I ran a points file between them anyway – for good measure. I buttoned it up and checked again – no change. I guess I’ll have to do some adjustment on it after I do some more reading about the procedure.

While I was working with the generator, I decided to try to troubleshoot where the generator was vibrating against the engine. I looked all around it with a flashlight and couldn’t see anywhere where it might be touching. Then I tried reaching all around it to see if I could feel anything – no dice + it was a little hot to the touch. Then I took a scrap piece of wood and started wedging it in different areas to see what helped the most – this is what I cam up with. It is wedged between the oil fill tube and the generator.

I did figure out  that she won’t start back up after you let her die. If you rev her back up when she starts to die, she will run another few minutes before she does it again. If you cut the ignition off, she will start back up.

Another test drive

I got in her to go for another ride and she wouldn’t start! This time I decided to hold the throttle down on the floor while cranking – she fired up with a little smoke!

I took her out for another test drive of about 10 miles and to take my Step Dad and his grandson (and Jordan, my daughter) for a ride. Near the end of the drive, about a mile from the house, I hit a bump and both front tires started wobbling so bad I had to slam on brakes! I pulled into a side road because I thought that something had come loose. After a fairly thorough check of the steering linkage, I decided that it would be safe enough to drive – slowly – home. I drove back up the same road, hitting the same bumps, albeit a little slower, and it didn’t happen again. Daniel took some video with his phone, so I’ll post it up here when he gets it uploaded or gets it to me.

When I got back in the shop, I pushed and pulled on the top of the tire and it feels like the bearings are loose! I don’t see how that could happen! I guess it will be the next week before I can pull the front end apart to find out, because I go back to work tomorrow!

I did good this week – I put 50 miles on her and fixed a few problems. I do have a bunch of oil leaks to fix (front and rear differentials, rear transfer case seal, and front engine leak), front end problems now, and a fuel problem (cutting off/hard starting).

Oh yeah, here’s the pic of the field modification – seat hold down device installed yesterday. It works well.

Did a little troubleshooting today

I got started today with a little troubleshooting on my “cutting off” problem.

– I pulled the plugs, cleaned and gapped them and put them back in

– I pulled air horn (top) off the carb and adjusted the float (it was set at about 3/8″, which is way low – it is supposed to be set at    9/64″), and checked to make sure all the ports were clear.

– I soaked up the gas in the bowl (it was clean though) and tried to pull the metering rod and diaphragm out – it was stuck. I could   not even turn it. I took some channel locks and got it to turn and pulled it out. I cleaned it up with steel wool and checked the diaphragm for holes  – then put it back in and tested it to make sure it moved.

– I pulled the accelerator diaphragm and checked it – it was fine.

– I blew out all the passages that I could get to.

– I ran a wire thru the idle screw hole and cleaned up the screw with steel wool.

After I got all of that cleaned up and functioning correctly, I put it all back together and fired her up. She fired right up and idled pretty good. I adjusted the idle until she idled smooth and lean with no hesitation when the throttle was pressed. I guess the stuck metering rod was the cause of the miss that I have been hearing since I first fired her up, because that is gone too!

Test Drive

I went for a ride down the road (about 6 miles total). It seemed like she had a good bit more power – a was able to get up to 45mph a lot quicker and even went to 52mph without too much trouble! I pulled back into the shop for a little fine tuning. After a couple of minutes idling, she cut off! The good thing is that she fired back up with a little persuasion.

A few other little things on the list

While I was waiting, I thought I would work on a few other things that needed to be done. I pulled the distributor and checked the cap, rotor and point gap – all were fine.

I painted my seat hold down device (it is actually a 4″ door lock that was an Army field modification) last week, so today I had a few minutes to install it. They were brazed on by the Army, but it was a little too close to the gas tank for me to be throwing flames or sparks around, so I installed it with machine screws and nuts – works fine like that. I’ll put a pic on here of that tomorrow.

I tracked down the rattle finally. I was starting to get worried because it was sounding more and more like a main bearing knock. It turns out that it really is the generator vibrating. I’m going to have to figure out how to stop it, because it is mounted with rubber bushings in the main generator mounts.

My windshield wipers don’t seem to have enough vacuum to work, so I thought I would try to find out why I don’t. I unhooked the line coming from the distributor and plugged that hole – the wipers worked! So then I checked the distributor line for the small orifice that is supposed to be there – it wasn’t. I pulled the one off of my parts Jeep and put it on – problem solved! I checked vacuum and only have 10# – I think it is supposed to have around 19#. The experts say that if you adjust your timing to maximum vacuum, it is timed correctly – so maybe I will adjust the timing this way tomorrow.

Another test drive

I took another test drive up the driveway and back – parked in the shop and idled a little while – she cut off again! I was able to start her back up though – with a little persuasion again.

I’ll try adjusting the timing a little tomorrow – maybe that will fix the problem.

The only other thing I can think of is maybe the coil is overheating or bad – maybe I’ll check that too.

Started putting a few miles on her yesterday

Yesterday afternoon after I cut grass I thought it was time to start putting some miles on the Jeep – the Steel Soldiers Georgia rally is less than 3 months away and I have not even put 2 road miles on her!

I took my side curtains off and she fired right up. I took off up the driveway and down the road. I was just going to go about a half mile to a secondary road and come back. Once I got there I followed that road to the end where it branches off and goes through some real hilly areas, She struggled a little on the steep hills, but nothing a downshift didn’t handle. After I explored all of the little side roads, I turned around and went back to the secondary road. On the way back I noticed the charging gauge was all the way over, so I kept an eye on that – it worked its way back to a neutral position, so I guess that is normal. I headed back up the secondary road and took the next side road and explored it until I reached the dead-end at a private drive – so I turned around and headed back. I worked my way back to the main highway to go home. When I got close to my driveway, I decided to keep going, so I went into town and turned around at the fire dept.. On the way back I decided to explore a road that goes to an old asphalt plant and a dump site for old asphalt and gravel. Back to the highway. I went back past my drive and about 5 miles farther. Then I turned around and came back with a short  run around the field near the house.

The ride lasted about 30 minutes and 16 miles. Once I got used to her screaming at me at all speeds, I slowly upped my speed during the outing. I decided that 45mph was as fast as I was comfortable going – the whining of the drive train just made me think I was going to blow it up! I got back home and pulled up in front of the shop and parked her. I checked underneath for any new leaks – there wasn’t any, so I guessed that I didn’t break anything.

About an hour later a storm came up, so I ran out to put her back in the shop. She wouldn’t start! I tried quite a few times, but no start. I finally had to spray starting fluid in the crossover pipe and crank about 10 seconds to get her to start-up! I drove her up the driveway and back, turned her off, and she fired right back up! So then I backed her back in the shop and closed the door.

I worked on her a little this morning doing a few little things. I changed my brake and clutch pedals around (I had them reversed) and adjusted my steering gear to take some of the play out. Then I went for a ride.

I rode down the highway to the secondary road that I explored yesterday and drove about a mile down it and turned around to come back. On the way back, I went to the field and took a spirited ride around it and down the old logging road. On the way back I pulled the manual throttle out one click (for cruise control) and took a slow ride back. It started to skip every few seconds, which had me worried, so I pushed the throttle in and used the pedal to speed up and hurry to get back home. As I rounded the last turn in the field, she cut off! I cut the switch off and checked the gas gauge – almost a 1/4 tank! I pulled the cap – I only had about 3/8″ in the tank! I guess the gas gauge doesn’t work after all. Good thing that I wasn’t on the road! I was only a short walk through the woods (on my newly finished 4 wheeler trail) to get home. I loaded my gas cans in the truck and ran to the store as quick as I could because it looked like rain. I drove the truck to where the Jeep was and put 5 gal in her. I hit the starter and she fired right up! I took off to the house. The kids (mine and a friend’s) came running out wanting to go for a ride when I pulled up in the yard. I told them I would take them after I got the truck home.

I walked my trail back to the truck and brought it home – where the kids were waiting patiently in the Jeep. I started her up and off we went. We went through my neighbor’s back yard to get to the field (because I don’t have seat belts and didn’t want to take them on the road without seat belts). We rode around the field, down the logging road, down a road to the pond and back to the house. They had a ball! After they got out, I backed the Jeep into the shop. When I was about to cut her off, she cut off. Then she wouldn’t start back up! I opened the hood and confirmed that there was gas in the fuel filter. I didn’t feel like troubleshooting, so I left her like she was and closed the shop door.

I’m guessing the problem is one of 5 things. 1)The carb needs to be cleaned (trash in it). I bought it back in 1998 as a rebuilt one and haven’t done anything to it since I started the engine last year.  2)The cam is bad, causing the fuel pump to not pump gas like it is supposed to. The cam IS bad on the fuel pump lobe – I was just hoping it would keep on working! 3)Plugs are fouled – easy enough to check – another day! 4)Points are fouled or out of adjustment – again, easy enough to check and adjust. Or, 5)Timing is off. Or it could be a combination of these.