Petrol 4.2 SGL fuel consumption (TB42 engine)

Engines and Engine Systems
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Alex Roux
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by Alex Roux »

SJC wrote: 16 Feb 2022 18:19 Not sure if the carby been serviced..
Radiator hoses are new.
How often must oil be changed on a high mileage tb42?
Normal oil change interval is 10k...?
Or annual if sooner.
If not done yet, I would recommend to get the carb serviced via one of the mackies on this forum.
It will be like a new car afterwards.
Skilpad, Shortie, Toro & Masewa
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by Tinus lotz »

Fanus
just make a booking and send your TB 42 to Anthony you will thank me later ...what Micheal does to the TD42Anthony is doing to the TB 42 motors Anthony a wissard with them . guys are getting 7 km per liter plus once he serviced and set them up . good honest service and know how . do yourself a favour and make plans
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by SJC »

Got 3.8 on previous tank.
Did service (changed oil/filter, fuel filter & air filter)
And changed spark plugs from bp6es to bp5es.
Now got 3.56/l :redface:
Could the change in sparkplugs require timing to be adjusted ?
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by Tinus lotz »

Fanus ....jy wil nie luister nie anthony sou joy Baie geld gespaar het jy moet 7 kry
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by Tinus lotz »

Laat die Kar by hom Kom Dan gaan jy Baie happy wees
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by SJC »

Dankie vir die raad....:rolleyes:
Maar dit beantwoord nie my vraag oor die sparkplugs nie.
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by Peter Connan »

SJC wrote: 05 Jul 2022 07:56 Could the change in sparkplugs require timing to be adjusted ?
No.
Mag ons ons kenniskry met lekkerkry aanhoukry.
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by SJC »

SJC wrote: 05 Jul 2022 07:56 Got 3.8 on previous tank.
Did service (changed oil/filter, fuel filter & air filter)
And changed spark plugs from bp6es to bp5es.
Now got 3.56/l :redface:
Could the change in sparkplugs require timing to be adjusted ?
Got consumption down to 4.38km/l, by changing driving style...
Keeping revs as low as possible, driving like a granny... :biggrin:
1996 Nissan Patrol 4.2 SGL
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by ricster »

You may not be fast, but you will get there.... :wink:
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Re: Petrol 4.2 SGL fuel consumption (TB42 engine)

Post by Spike »

Keeping revs as low as possible isn't necessarily the answer. You need efficiency.

Better to figure out what the torque curve of the motor is and drive it in the peak torque range, and aim for cruising revs at the top of that torque curve. Then you will be driving most efficiently and your big toe will just be gently touching the accelerator pedal. In my cars I make marks on my rev counters to indicated start of peak torque range, actual peak torque, and end of torque range. It works as a reminder of what to aim for.
I've got that waxed in practice, I hope I've managed to explain it clearly in words.

Driving at super low revs all the time can also have other issues such as engine lugging and low oil pressure etc which can bugger up an engine over time. I've seen it happen.
:oldtimer:
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