I am posting this because I think these forums are the best thing ever for the guys who refuse to give in to the American sprit of I'll fix it myself. I have solved many probelms on my Harley with forums, but I serched posts for an answer to this and found nothing;

I bought a high milage 99 Silvardo, 191K with the 4.3L W with the spider injection system. Ran great untill one morning I went out and nothing. Canked two little sputters and then nothing. I serched forum after forum. I had good spark ( I thought ) I kept pulling plugs and had a great white brite spark......the plugs were wet when I pulled them. I tried everything. Here is what my hours of frustration have found.

The distributors on the early W's sucked and GM knew about and put out a bulliton. Especially if you have a/c from what I found. If you have a problem like me just go out and buy a new distributor, cap and rotor. The OEMs sucked! Chances are even if you are getting a good spark when you pull a plug the cap / rotor may be junk and the way the distributor is designed sucked. They are plastic and develop small cracks letting moisture in. I got in for $80 bucks and problem solved. Truck fired right up and runs great.

I hope this helps some one sometime. Good luck if you having problems.

 

welcome to our forums first of all, and great info. thanks for sharing it. every little piece that someone posts could def help someone somewhere along the way.