2007 Chevy uplander idels rough smell gass lifters rattles on 2007 Chevrolet Uplander

Replaced maf senser throttle body senser oxagan senser crankshaft senser

Asked by for the 2007 Chevrolet Uplander
Possible defective fuel pressure regulator and now gas mixed with oil in engine!
Thanks for help. How would I check that
Check engine oil to see if overfull and smell of gas on dipstick. IF either, seek help for checking press. reg.!
1 more answer , 1 more comment
agree with pushrod but seek diag and est