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Louie
Louie, Technician
Category: Motorcycle
Satisfied Customers: 11427
Experience:  25+ yrs. experience
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I have 2004 250 trailblazer and it is very hard to start. i

Customer Question

i have 2004 250 trailblazer and it is very hard to start. i replaced the plug and noticed that it was not wet. when we get it running it runs great as long as you don,t shut it off
Submitted: 1 year ago.
Category: Motorcycle
Expert:  Tim's Auto Repair replied 1 year ago.

Hi, My name is ***** ***** for the delay.

I will do my best to assist you

does the engine light stay on?if so,cann you give me the computer codes?

how many miles is on the blazer?

Customer: replied 1 year ago.
Hi Tim there is no engine but the "n" light lite stays on. I have no way of giving you the code #,did not know their was codes?
Expert:  Tim's Auto Repair replied 1 year ago.

ok

Expert:  Tim's Auto Repair replied 1 year ago.

how many miles is on the blazer?

Customer: replied 1 year ago.
Sorry Tim but the atv has no speedometer?
Expert:  Tim's Auto Repair replied 1 year ago.

does it always start good cold?

Customer: replied 1 year ago.
no that's when it give's us the most problem?
Expert:  Tim's Auto Repair replied 1 year ago.

ok,,please stand by..i will opt out,someone will be right with you

thanks

Expert:  Louie replied 1 year ago.

Hi and welcome to JustAnswer,

Thank you for the question and your patience. Should you still need assistance for information purposes only...

Initially (and if have not been tried), the prescribed preliminary approach would be; inspect the battery & ground lines and/or check/clean the battery cables + terminals as a preliminary consideration. Better yet, have the battery externally charged and then load tested (even if new and just for purposes of eliminating it as a suspect).

Still, attempt to start again with throttle partially open. Then proposed preliminary checks (if have not been done) :

  • • carefully remove the sparkplug;
  • • check the burn color of the ceramic at the tip end;
  • • results would indicate:
  • - if black/sooty, then rich and/or vacuum leak issue;
  • - if oily, then an internal engine problem;
  • - if light brown to whitish, then lean and/or an air leak concern;
  • • check if the tip is wet with fuel; and then
  • • cautiously perform a spark test;
  • • results would indicate:
  • - if not wet or overly wet, then fuel delivery issue;
  • - if no/weak spark then electrical/ignition concern;
  • • consider replacing the sparkplug.

Further checks on the possibility of over/under-voltage, regulator/rectifier and/or stator issue. With a volt/multi-meter, determine the battery voltage when:

  • • ignition OFF and then when ON;
  • • when starting the engine;
  • • engine at idle;
  • • when attempting to rev the engine.

And also strongly consider a compression test or better yet, a leak down test.

Please post back results / observations of the above once tried.

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