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Old 08-09-2012   #2
scottfab
 
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Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,193
Default Re: Need Advice: Miss, low rpm stumbling

Quote:
Originally Posted by EWest View Post
Power key off = same behavior. I never got a chance to check the fuel pressure under load, but would that cause a problem in 2 specific cylinders, and only under 3000RPM?
absolutely. If you get to a low pressure situation one cyl is going to go lean before the rest. The "miss" has to start somewhere.
I assume the wires were checked out? Length on a few are the same so they can be swapped. AND if one plug was cracked I'd not rule out more damage to others. These aren't those funky Bosh plugs are they? I've seen multiple problems with those.
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