81 FJ-40 - Hesitating / bucking under acceleration (1 Viewer)

[AYM707]

So I purchased a new distributor cap (mine was chipped) and a new rotor. I noticed the new rotor has a rough edge (black bit) at the tip. not sure if this is a protective coat or something that helps the current transfer. Feels alot like a match box but my old rotor did not ave it, or it wore out years ago. Am I supposed to rub it off or let it be?

 

[MatthewMcD]

So I purchased a new distributor cap (mine was chipped) and a new rotor. I noticed the new rotor has a rough edge (black bit) at the tip. not sure if this is a protective coat or something that helps the current transfer. Feels alot like a match box but my old rotor did not ave it, or it wore out years ago. Am I supposed to rub it off or let it be?

View attachment 3911586

Let it be.

 

[charliemeyer007]

I'm guessing its a conductive compound to wipe the aluminium contacts. I vote you leave it alone and just trust Mr. T. I like NAPA Echlin stuff - they were brass; not sure if they are still.

 

[65swb45]

I'm jumping back on this after a few weeks of "other" things.

I did do some preliminary investigations; opened it up, cleaned / sanded the copper connectors. I have also increased / overcome my fear with "playing" with the distributor. I also experimented with starting / turning the engine with the distributor open / disassembled. Problem is the dwell meter is always reading. When the engine is off, the meter shows ~60 degrees, but when you start / turn the engine, it drops to 36 degrees. This means....this is a 2 person job.

My distributor cap is also chipped where the cable #4 connects. Not a big issue, but ordered a replacement.

@pb4ugo / @65swb45 / @MatthewMcD

I re-read all the threads, so just to confirm what I'm doing one last time...my dwell angle is 36 deg and I need to increase the angle to min 40/41 deg. This means I have to decrease the gap; ie using a slot screwdriver in the slot near screw 2; move the points slightly closer to the cam shaft. I am assuming this is a hair's width adjustment.

Gap decrease = dwell angle increase?

Apologizes, I'm asking baby steps; but dont want to screw this up. Appreciate your confirmation / support.

What does your feeler gauge give for a point gap currently? Remember, as you close the gap, you're also increasing the likelihood that the points will arc and burn.