MayDay!! - Hard Accel Killed Idle

[AnotherOldJeepGuy]

This makes it look way easier than it seemed in words..

https://youtu.be/olxXzyzMF-4

 

[Ωhm]

Good video. One man show with him. 

[AnotherOldJeepGuy]

Yeah.  I sure wish my electric fan came out that smoothly, mine is a much tighter fit.

[AnotherOldJeepGuy]

Here is a video that seems to show T13

https://www.youtube.com/watch?v=gMf56Lv5L98

 

[AnotherOldJeepGuy]

If am understanding a little better, I believe what I did this morning is not "Indexing", but "Index Checking."  In the video I posted on setting TDC, that guy's fingers had to be much longer that mine, there was no way I could get any finger or thumb in there to check for compression v exhaust cycle, but I am willing to bet until someone tells me otherwise that if I captured the exhaust in the images below, the engine would not be running at all.  So I am assuming what I captured is TDC #1 combustion.  What I do know is that the notch is exactly aligned with "0".  What I do not know for 100% certainty is that I am at 100% TDC combustion.  I don't have a dowel or anything similar yet to put in the cylinder and try to confirm this is the point at which the piston is completely at the top.  I used a long zip-tie but since it was flexible there is some amount of ambiguity.  But I do know it is close.  Image Top Right shows where the rotor is.  The pic alone seems only somewhat useful.  (I now see the point of cutting up a dist for this check, I wish I still had the one I took off in Jan).  However I scratched a pointer to the center of the rotor contact and put the dist cap back on, the bottom pics show there is not a 100% alignment.  My expertise doesn't include knowing how far off it would have to be for this to cause a problem.  An of course I have now way of knowing if this amount of misalignment has been there since I bought the Jeep in 1990, or if it has only been there since the "maneuver incident".  I am going to get a dowel or a long fireplace match, or something stiff but not scratchy and try to confirm if the notch at 0 is really TDC.  Since I don't believe I have any way to make my fingers longer, I am going to stop at the local hardware store and see if there happens to be any threaded pipe on the shelf that just happens to be the same size and thread as the spark plug so I can move the hole in the block out to where I can actually reach it with a finger and then I can also confirm this is actually TDC combustion rather than exhaust.  If there isn't perhaps that is the invention I can use to fund my retirement.

 

So the questions to the experts is obviously, do the pictures indicate an issue that MUST be corrected, SHOULD be corrected, is an OPTIONAL correction, or is this an alignment within the range that the ECU "should" manage it fine as is.  And of course if this is not acceptable, would it account for my engine issue?

 

[Ωhm]

All photos look good. You didn't jump a tooth or two.  Indexing is not your problem.

[AnotherOldJeepGuy]

Glad to hear that!  I was not looking forward to doing the full index procedure.  The two videos I dug up made it look less off-putting, but then I also watched this one, and that changed my mind.  Watch from about 12:30 to see why...

https://www.youtube.com/watch?v=4aNvypX24ek

Basically, putting the dist back it is hit or miss, literally, and you have to be able to tell by listening if you get it correct, yikes.

 

Also, when I pulled plugs to aim at TDC, I snapped a pic.  If you go way back in this post you can see the black with I took them out before.  This is from that time, when I put in a new plug, until now.  It's true that I've only put on 10 or so miles max, but have also run it in the driveway maybe a total of an hour, so this is a very short time test, but, for what it's worth it looks very clean at the moment.