Need some help here.
Recently I've changed engine kosong (just block and head) from 4G92P to 4G93 SOHC.
Everything else remain stock from 4G92P.
This is originally a Wira 1.6 manual.
Right now I can only hit 300km/38L(about RM80) as compared to easily 500km/38L when it was still using the 4G92P.
New spark plugs were white (too lean) after 1 month.
I tried driving with extreme decency (shift below 3000rpm and cruise at around 80-100km/h only) but still unable to hit past...
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