2002 Jeep Wrangler Cylinder Misfire

Tiny
MIKEYM311
  • MEMBER
  • 2002 JEEP WRANGLER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 67,000 MILES
I live in south Florida, and recently we have gotten a lot of rain. I have driven through some pretty big puddles, and since then my engine has been shaking quite a bit. It also doesn't have the power it used to. The check engine light blinks when this occurs. I used a OBD-II reader and the code that it gave me was P0300 - Multiple cylinder misfire. It also said that there is an emissions leak. My guess is that moisture may have gotten in the distributor cap, the distributor cap is cracked, or moisture got in the spark plug wires. I don't have a lot of experience working on engines, and want to check the distributor cap, but can't seem to locate it. I think it is hidden between the firewall and engine. I just can't see it. Any suggestions? I am considering replacing the spark plugs to see if this helps too. Any advice would be appreciated. Thanks!
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Saturday, October 18th, 2008 AT 3:43 PM

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Tiny
RASMATAZ
  • MEMBER
A Random Misfire P0300 code usually indicates a vacuum leak or bad fuel

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
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Saturday, October 18th, 2008 AT 3:51 PM

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