Fuel Consumption. 4.2 EFI about 22 L per 100ks

[kbchez]

I know they do drink alot but 22L per 100ks Now to tune the engine more. Taking out the lpg mixer to air intake.
Then check timing. Repair airbox its broken. has anyone got the text readings for the water sensors so I can make sure they are working correctly.

Many Thanks
Kevin

[rods gq]

Yes a little high but even all tuned up and if on all terrains will struggle to do better than 17

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[kbchez]

Thanks mate.

That will be about 5l per 100k's better. thanks

[kbchez]

What was the nissan saying when they first came out about the fuel consumption.. that would be interesting

[dom14]

I know they do drink alot but 22L per 100ks Now to tune the engine more. Taking out the lpg mixer to air intake.
Then check timing. Repair airbox its broken. has anyone got the text readings for the water sensors so I can make sure they are working correctly.

Many Thanks
Kevin

For a 4.2(EFI), it looks ok. I haven't seen or heard of many 4.2s with 15L/100km figure.
Heavy car/bigger engine combination is not built for fuel economy.

[Bigcol]

I used to get about 15L Dom - and as bad as 26L when towing
thats why I had it re-tuned for Gas performance


they are thirsty big buggers,
but
get all the wiring sorted
electronic Ignition
extractors
good tune up

you will be amazed at how good you can get them to run

[kbchez]

thanks bigcol,
Its already got extractors,
What sort of electronic Ignition, you talking about.
I will be removing the LPG for now. It leaks gas under the bonett and its old as type.

[billyj]

where are you located mate? it wuold be a good idea to get someone to plug in a scan tool like an ecu talk so you can see exactly what the sensors are reading while running.
you dont need an electronic ignition the tb42e is already computer coltroled for the timing and fueling. its only the carby boys that replace the points in there dissys with an electronic ignition setup
other things to check are the thermostat as if its not getting to proper temp it will run rich

my best econ was 13l per 100kms avg being about 20l. currently getting 20-25l per 100km towing 2 tons daily but my tb42e is turbo charged these days

[dom14]

where are you located mate? it wuold be a good idea to get someone to plug in a scan tool like an ecu talk so you can see exactly what the sensors are reading while running.
you dont need an electronic ignition the tb42e is already computer coltroled for the timing and fueling. its only the carby boys that replace the points in there dissys with an electronic ignition setup
other things to check are the thermostat as if its not getting to proper temp it will run rich

my best econ was 13l per 100kms avg being about 20l. currently getting 20-25l per 100km towing 2 tons daily but my tb42e is turbo charged these days

Hey BillyJ,
How did you manage 13L/100km economy on TB42?!
What did you do to get that economy?
Thanx mate

[kbchez]

thanks all,
I'm in Albany WA.
A scan tool would be great, The first thing I changed was the thermosta. put in a high flow. The old one was not opening properly and it was bent.
That scan tool you are talking about is it a OB2 scantool. The sparkplugs are a white colour. Timing light on order. via ebay.So I cannot do much more till the timing is reset. I do know that if its close the ECU computer should work it out to correct timing. So Im just going to turn the dissy till it sounds better for now.
I have been thinking thats dangerous. These patrols where proberly designed for the US market. so fuel consumtion not a worry. Most likely If these machines where geared down about 500RPM. fuel usage would improve. But what a drama that would be. Is the Auto gear boxes on the petrol the same as the diesel. ??????.....

thats enough for now lol.

Thanks
Kevin