No fire

[Buzz]

Just completed an annual tune. Valves, carbs, timing, and plugs. Same distributor,new rotor, same plug wires. The wires, distributor, and coil date to 2005 and 30K ago. I replaced the rotor with an identical spare. the old one had cracked where it indexed on the distributor shaft. The timing was at 12 BTDC.

A week ago I was taking my wife and kids to the beach on Mothers Day, a few days after the tune up, when three miles from the house I had a few back/misfires and then the engine died. It would crank but no ignition. I came home on a strap behind my neighbor's pick up. Bad Mothers Day.

That night I had an inch long spark from the coil but weak spark at the plugs. I changed the plugs and set the timing to 10 degrees BTDC. It ran strong until tonight when I went out for wings about 8 miles from my house. On the way home it did the same thing. I came home behind my other neighbors's truck.

So, now I suspect the coil. Your thoughts? Thanks for you time. - Buzz

[edzz]

Look here http://www.expedition-imports.com/categ ... il_recall/ and here viewtopic.php?f=12&t=6311&hilit=coil

[Buzz]

Thanks for the post. My coil is not one of those included in the recall. Anyone have a part number for the Blue VW Coil referenced in the link?

[Buzz]

Never mind on the part number. I found it after searching the forum. Thanks again!

[Stekay]

Don't keep us in suspense... Molex?

[Buzz]

No chance to touch it today. I retired the Molex a few years back when I had the alternator rebuilt. But I will check it again. I think the voltage regulator is involved. I have replaced both the front turn signals in the last month.

[Buzz]

I mean I REWIRED the Molex a few years ago...

[Buzz]

I cleaned the Molex tonight. No joy in Mudville. Still no start. I separated the hot wire in 2006 at the same time I had the alternator rebuilt and replaced the voltage regulator. A new voltage regulator and coil are on the way from Scott.

[spandit]

Have you changed the ignition (HT) leads? If you're getting good spark at the coil end but not at the plug end it indicates the leads might be at fault?

[Buzz]

The truck is running now and about the only thing I can say is was probably the key switch. I sprayed it out with electric parts cleaner while I was trying different things. In the end I am running the same plugs, wires, rotor, cap, coil and voltage regulator.
I have run it on two 40 minute trips with no problems. It's a puzzlement.