rough on one mag on 912ULS

Before you cut any Tyes, take a mental picture (Or an actual picture) of WHERE and HOW TIGHT the tyes are.

When you are finished, duplicate the placement.

The tye-Wraps should be around the outer insulating jackets and Not around the actual Spark plug cables.

Despite heavy silicon insulation, the insulation on a 30,000-volt plug cable is marginal at best.

If you touch a brand new plug cable on a running engine, it might not set you on your butt, but it definitely WILL get your attention.

You do NOT want to cause two Plug Cables to touch directly together and you Do Not want to be cranking down the Tyes to the point that they compress any insulation.  Easy does it!!!

- - -

A pet peeve of mine is that all tye wrap tails are to be cut off FLUSH with the heads.

Those cut tails are way sharper and more dangerous than you might imagine.

If you get your hand in the engine and get poked by a protruding tail, your natural instinct is to jerk your hand out quickly.

I have personally witnessed more than one fellow technician getting stitches to close the ensuing wound.

Do not leave ANY tail showing.  The shorter you make them, the stiffer they become.

Thanks again, Bill.  Yes, pictures are our friend :-)

I trust that "around the outer insulating jackets" means the plug boot.  Right?  That's where these are zipped now.

I think that "Not ... to the point that they compress any insulation" is descriptive. Thanks!  It makes me wonder what good the zip tie does, though...  Why can't I just use an RTV silicone or similar to hold the boot on the wire? :-)

We wholeheartedly agree regarding tie tails, just like safety wire!  If it's reasonable, I won't cut and instead just leave an inch or two since longer is, indeed, more flexible and the manufactured edge is soft.  I can't afford lovely $80 Knipex flush-cut pliers, so I use ... nail clippers! :-)

Thanks again to all!

Actually I was thinking more of tye-Wraps that might have been farther up the harness an not the mini-Tyes on the Spark Plug connectors that are mostly ineffective.  I forgot about them.

You can usually unscrew the plug connectors without removing the tyes.  They seem like a good idea that didn't work out and are now mostly for show.

. . .

Perfectly serviceable Flush Wire Cutters can be had for under $10.

Het Bill, I sure don't want to hijack this thread, but having a similar misfire, I found your suggestions to be excellent. My ignitions drop on A is only about 30 rpm, whereas B drops about 300 rpm.  I measures my coils and found the lowest to be 15, 150 ohms, and the worst was 16, 490 ohms.  Just curious if you would see that as satisfactory?  Thanks for your thoughts............Tom

Oh!  Good to know.  Thanks again :-)