About 6 mths ago I had problems with starting and it was running rough. Actually stopped a few times.

Checking the the spider injector showed a loss of pressure and I installed a new upgraded Spider. All went good for a few days and problems starting continued. There was a sensor, bottom of the engine on drivers side. Stuck it together and poured Gorilla glue on it and again things worked good for a few days.

For months I had hard time with starts and finally replaced the mass air sensor which is the middle of air intake. $30 from AM parts online. Didn't help much and I continued with the hard starts. Had to keep charging the battery because I found trying and trying would get it started. Once it was started it would be ok for the day.

I finally broke the starter and replaced it. I once again talked things over with my mechanic and he found an article about the blazer distributor being a major problem with the Blazers.

I replaced it today 3/27/14 and everything works GREAT! I can feel the Blazer running and starting it top shape.

Just wanted to pass this problem with the Blazer along.