Outer Limits 4x4 Board

hey guys im looking into gettin a hilux extracab, its a 1990 with 280,000kms on the clock now the issue is he saids its blowing excessive black smoke through acceleration which then clears. i just want to no if this is fixable without replacing the motor? what could be the cause of this problem. is ...

haha it isnt even close to a shopping kart with 31's on the road so maby i should stare clear of 33's on sand then haha! damn the 4 cylinder

cheers for all the info next time should be alot better on the sand
ill go out and get a compresor and tyre gauge this week which should make droping the tyre pressure easier

thanks heaps for the replys

to be honnest it was my VERY first time out 4x4'n im comlpetely new to this, i never droped the psi :S im guessing that its a must on sand? i couldnt use h4 at all because the motor just stalled, and when i used l4 i could hardly take off i basicaly got almost bogged everytime i tried to stop or ...

just wondering what 33" tyres for 15" rims are very good in sand,

atm im running 31" maxxis big horns and they didnt seem to be the greatest on the beach the other day. its for a 4 cylider 90 4 runner

thanks heaps for the info ill get onto the link now

hey guys was just wondering whats involved in changin my 1990 2 door 4 runner from a 4 banger to a commodore v6 or v8? and which is the better motor out of the 2, am i able to keep my lpg setup? and any info on the costs involved in getting it done at a shop, i cant be bothered changing over another ...