Hi I have a 2000 gtx rfi and it keeps fouling plugs. I just bought this 3 weeeks ago and was told it is not a fixer upper but it wont run over 700 rpms after plugs foul. Put new plugs in it will run like a champ. Awful lot of smoke comes out when first started. I have used all old gas and added 2 cans of sea foam with 2 fill-ups and still plugs foul. Any ideas?????


