b_killer wrote:Hi everyone
So I'm on my second tank of fuel on my 4.8 so perhaps a little premature, but I managed 30l/100km or 3.34km/L on the first tank and the second isn't looking any better. I was expecting 4.8km/L given the engine, but something must be out of spec. What can I check before the next service which is still a few thousand kms away?
Tinus lotz wrote:Go make a turn at graham let him check the settings. ..if you drive it like you stole if it can even get worse
Alex Roux wrote:Tinus lotz wrote:Go make a turn at graham let him check the settings. ..if you drive it like you stole if it can even get worse
Well, I guess Tinus knows better on that front. I did not even think a heavy foot can do that to a 4.8.
It looks like you live in PE?
In that case it may take too much petrol to get to Graham. There must be another solution.
Tinus lotz wrote:Sorry man didnt see you were far away....replace feul filters check feul pressure check timing have a look at aircleaner ... give graham cumming a call pathfinder on the forum he will assist you over the phone with all the relitive settings pressure ect ...mabe a bit of carb cleaner on the maf o yes blocked exhaust also makes big problems
Herrie wrote:I think that you must check you Patrol's PCV valve as well because if the PCV vavle is blocked or very dirty your fuel concumption is bad.
Alex Roux wrote:
In my recent case, I had two problems. A weak fuel pump (that was on its way out), and the ECU setting being wrong. Both contributing to poor consumption.
Too much fuel pressure is also bad for consumption, but this is unlikely as the regulator should set that right (I assume the 4.8 has its own built-in regulator?). But a faulty underperforming fuel pump is a possible cause. This would however coincide with poor engine performance as well.
I do not know how easily the mapping of the 4.8 ECU can go wrong though. I think not, as I have not heard much complaining about that.
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