Forum Discussion

lonfu's avatar
lonfu
Explorer
Mar 16, 2016

p30 stumble problems/ fuel pressure regulators

Ok, so having a problem with up towing stumble when under load. I have 98 454 "j" 26wu Itasca on the last year that chevy produced it's P30 chassis. This stumble has been a real bummer, I checked the ...
Class A
allbrandauto's avatar
allbrandauto
Explorer
Oct 01, 2016
fuel trim of -5 to-7 is not bad I would be thinking more of a vacume leak maybe from intake manifold gaskets if you could find somebody that had a smoke machine it would be easy to see

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