View Single Post
  #2  
Old 03-04-2011, 07:58 PM
HUMTECH's Avatar
HUMTECH HUMTECH is offline
Hummer Authority
 
Join Date: Sep 2003
Location: Canada
Posts: 1,251
HUMTECH is an unknown quantity at this point
Default Re: 2003 h2 with p300 code

which cylinders are misfiring? if its 7 or 8 could be water in the fuel rail. Could be a bad injector. \if all cylinders on one bank are missing could be a restricted catalytic converter. Could be a plugged injector due to contamination in the fuel system. Could be intake gaskets leaking.
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
Reply With Quote