OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Honda Engines Honda GXV160 giving slight dark smoke puff when revving?

@Tyler,

Just curious - you've recommended the BPR5ES rather than the BPR6ES I have been using - I know this is the next 'hottest' compatible plug on NGK's scale - would you feel if going to a 'hotter' plug will assist, is moving a single increment likely to be discernable as opposed to going with the BPR4ES etc?