Question about 2001 Isuzu Rodeo

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Ignition detonation problems

T have a harsh knock in my engine when reving high in 1st and 2nd , in all gears actually when revs get up, pulling well and not over heating what can i do. I beleive it should run on unleaded OK a 2001 holden rodeo 142000 kms, a mechanic said I should go to premium unleaded dont want to do this if unnecessary because of fuel costs.Any help out there PLEASE.
The noise is scary and i am concerned i will do further damage.Bernie

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Um, theres 2 things you can do, 1 is to switch to premium just like the mechanic said, because the extra octane helps prevent knocks and pings. or the other is to go pick up a bottle of fuel and engine cleaner, pour that in ur tank(read the instructions first), then go out, and with every tank of gas, or every other tank of gas to save a lil money, pour in a bottle of octane boost(make sure to read wut kind of vehicle its meant for first. you cant run high performace octane boost on a average car). i recommend gummout, or STP, both of them work really well, and itll actually restore some lost horsepower, prevents the knocking and pinging, and also, CAN increase gas mileage, but like i said you have to use it on an almost regular basis.

Posted on Sep 26, 2008

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