Need more info, is this a brand new set up or was it used. Has it been on your engine for awhile?
What I'm getting at is it sounds like the carbs may not be the same or they could be dirty, the float levels may be off, so many possibilities.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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