I had just had my nissan pickup motor rebuilt and the timing was a lil off. So a certain mechanic told me it would on cost 100.00.$ to fix.. After 4 days an several added parts thats i wasn't contacted about prior to purchase of there over priced of auto parts. i was stuck with 500.00 $ bill.. An when i did i pick up my vehicle. The brandnew less than 50 miles new motor was smoking very badly along with the TBI injection back fires in the air cleaner.....Its truly heart breaking when a trusted friends reference back fires an im left with a still much needed repairs for my only truck...i worked hard for my money to have my motor rebuilt an now its smokes like a coal train.. please message me if you have been treated the same..