1996 Chevy Astro

Tiny
JAKES TRUCK
  • MEMBER
  • 1996 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 209,000 MILES
The check engine light is on. A scanner says something about manufacturer ignition or misfire. Why when the van starts it sounds like its off timing but as soon as its running it runs great. Starts every time. Has new plugs, wires, cap, rotor and the module inside distributor.
Wednesday, October 15th, 2008 AT 4:38 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
You need to be aware, that a fuel problem, can cause a misfire, along with spark--compression--vacuum leak, I can't name everything.

There is a bulletin about that spider fuel assembly, rough idle at start-up. The fuel poppets need cleaning. I can't tell if your problem is spark--fuel related or what. If your scanner will show live engine data, you might look at the fuel trims.
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Wednesday, October 15th, 2008 AT 5:20 PM

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