why does it have a weak spark?

1993 MITSUBISHI ECLIPSE
170,000 MILES
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MCHUGHC
  • MEMBER
  • 2 POSTS
Died while driving. changed spark plugs,wires,checked gap,distrubtor cap,roter,ecu,mfi,battery and conections still has weak white spark.will try to start but wont turn over.
May 10, 2012 at 6:12 PM
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DJCL
  • CAR REPAIR CONTRIBUTOR
  • 767 POSTS
A weak ignition coil will give you weak spark
May 10, 2012 at 6:22 PM
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MCHUGHC
  • MEMBER
  • 2 POSTS
I tested it too, all within normal resistance.
May 11, 2012 at 2:34 PM
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DJCL
  • CAR REPAIR CONTRIBUTOR
  • 767 POSTS
Testing a coil for resistance is not a very good test. The coil is not under a load. You can give it 12 volts with a jumper to make shore your not droping voltage on that line. If it can't jump a spark tester gap or @ least a quarter of of an inch gap and its not bright the coil is week.
May 11, 2012 at 11:17 PM
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