Had some great help here before thought I'd give it another try!
Got a 98 blazer, had some issues running rough for the first 10-20
minutes when first starting it, had it looked at and the engine code
read.. Mass Air flow error and repeating misfires.. The shop I had it
in wanted to change out the fuel injectors, which Im sure you could
guess, is worth more then the truck. So took it home went to work
myself.. New mass air flow, and new distributor cap/rotor.. Ran
AWESOME for a month..Like a brand new truck.. Then it rained and it
went to shit.. Now Im stuck where I was, but it never clears up.. It
just idles rough as hell.. I can tell it's still mis firing.. Changed
the plugs and wires same thing. Anyone got any ideas? Or am I stuck
with an injector problem?
Thanks in advance.
My guess is its still in the ignition system. You should see the Miss
a timming light if its pick-up/camsensor related. else it might be
plug wires. also, 1/16 turn to tighten plugs with out gaskets, else
you'll crack the insulators.
I have found that bad coils or ignition modules can cause all kinds of these
problems. Have you tested fuel pressure? Have you scanned the system for
codes or monitored the fuel trim? Can you smell gas? You might want to
pick up some cheap noid lights and check to make sure your injectors are
Let us know. These problems can be as simple as a cracked plug, shorted
wire or even maybe an ignition wire in the wrong location??
On 10/10/08 7:28 PM, in article gcoofi$ihb$ email@example.com,
Take a hard look at the coil for "grey'' streaks around it's body, signs of
arcing out the side.
Had one give me fits on my '89 Blazer and also one went bad on my '99 Yukon.
Had misfires in my Yuk, distrib. was bad at 98k miles.
Misfire codes and no others point to secondary ignition probs.
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