I have a 2001 trail blazer my sparke is good when i first crank it over but a few sec. it gets weak and weaker till there is nothing if i wait for 10 or 15 min. then i have good sparke again but does the same thing again it will not starte hopfuly someone has a clue of what is wrong replaced the sater,coil ,and the cdi still the same HELP

 

Did you replace the plug....I assume you did....Check all of you connections, from battery on to the plug......

 

yes replaced the plug and check all con.

 

also make sure your using the right spark plug and the right gaps(if you replaced it) I can post the type of spark plug up here later when I go and work on my trailblazer. I do know that the gap should be .028 mm

 

it should be a br8es.....I think, that is what is in my sport, and should be the same plugs....

 

Yes that is right.......... daatv, use and NGK type #br8es set at a .028 mm gap and see if that works...

If your already doing that, I dont know what to tell you

 

that is the plug that im using .I put a nother type of plug on the and laid it across the head as long as i held it on there tightly ihad little spark what would be the chances of being a bad stater ? I got off ebay it was new in the plastic.

 

If you have a spark then you should be alrite. If it is to little you may have a bad spark-plug-initer thing. Try giving the pull start a tug and see if that works. if it does, you probly have a bad starter.