Pretty incredible Dave, thanks for posting this. Do you have any other car videos from your trip?
That's awesome, can't wait to see the other videosI have several will be posting later in the week. The next best one was going thru a tunnel in the Ozark mountains. The trip started in central florida, thru GA/AL/MS/AR/MO/KS/CO going out, back was CO/KS/MO/IL/KY/TN/AL/GA/FL. I was averaging 800-900 miles per day, drive or sleep at a rest stop until I got to Pikes Peak. It was full on vanishing point...
I would like to make the Denver to SF in to honor Kowalski.
I assume my system is working as it should, have not found anything about the L jettronic having issues at extreme altitudes. I can only think the AFM flap was too much of a restriction, but that is just a SWAG. I was hoping someone could chime in with some experience with like altitudes to confirm or deny the problem.Nice video. I can see why turning around on that road had to be done VERY carefully!!
I'm surprised, I would have thought that the FI would have operated regardless of altitude. But there you are...!
Can you explain a bit about how to check the EGR? Where is the diaphragm that you lift?I assume my system is working as it should, have not found anything about the L jettronic having issues at extreme altitudes. I can only think the AFM flap was too much of a restriction, but that is just a SWAG. I was hoping someone could chime in with some experience with like altitudes to confirm or deny the problem.
Note I changed the plugs at the end of the trip, they looked fine, very light tan color on the insulators, some blackish color on the metal rim. This is with about 9k miles on them, I just wanted to see if I had a chronic mixture problem. The current setup is pretty lean (will die very quickly if the oil filler cap is removed). I am running about 10 degrees of advance at idle. (California car) the EGR and PCV are all in place, the EGR appears to be working (at idle I can lift it up at the diaphragm and the car will stumble). Vacuum as sea level is a little lower than I would like (just barely 17 inHg). I can improve it with a richer fuel mix and more advance, but that is the way it is. I have not checked the cam timing, maybe its a bit retarded. I will check the valve lash since its been a while. I "think" I can hear a slight vacuum leak, around the intake manifold, will check with smoke. Cleary a vacuum leak could mess things up....
So if my EGR is not working, when I push up on the bottom, nothing will happen, right?the EGR valve is opened and closed by atmospheric pressure. So when there is a vacuum applied in the servo top, the bottom is pushed up, pulling open the valve. at idle it should be closed, you can put your finger under the servo and simply push it up, the car will stumble but should settle right back down as soon as you release it. the bottom of the servo is open and connects to lever that pulls up on the EGR.
with it idling that is correct. what can happen is the valve get so carboned up that it can hang up and not close, causing a air leak that will mess up the injection system. The valve needs to be cleaned of carbon periodically and the action of the servo should be tested with a vacuum source.So if my EGR is not working, when I push up on the bottom, nothing will happen, right?
If your car is not a California car (originally) or Colorado car, it likely doesn’t have an Altitude Switch installed. There is wiring in the F/I harness near the steering column that could be used at high altitude by installing a jumper and/ or a switch to manually engage the altitude fuel reduction of about 6%. Wires should be probably taped to the main F/I harness with a piece of blue tape. Two wire T shaped connector likely with plain white wires. On ‘HIGH ALTITUDE’ vehicles (California and likely Colorado) there was a pressure sensing switch that comes on around 3675 ft above sea level to reduce fuel by 6%. This probably would have got you to the top of the mountain.
Let me know, I'm 2.5 hours away. Really lucky it gave out at home!!!Tail of the dragon is next on my list. 1st is I have to fix a broken timing chain guide (tight side), must have happened on the trip, but did not cause any damage, it must have gave way and then dropped harmlessly away, I found it when checking valve lash. Anyway got the rad out, getting it rodded out or re cored as required, it was not leaking but had about 20% build up in the core that I could see. I am removing the cover with the engine in the car, was going well but now I think I will have to move the AC compressor to get at a couple of the small bolts. will have to see if I can unthread them enough to remove the cover or if I have to loosen the comp mount and tilt it out of the way to get access.