Stock SX heavy on fuel

rat · Post by **rat** » Mon Jan 14, 2013 8:46 pm

Hoping someone got an idea for me. Car is heavy on fuel. R100 to do 40kms driving at 100kph no boost.

No smoke runs smooth. Car Stock expect walbro pump

What i have done / Checked:

ECU no error codes.
Replaced injectors which sorted some issues out.
New cam belt and tensioners, Belt lined up to marks
New Water pump
Checked for air leaks (could be one)
Cleaned AFM
Checked grounding
Timing 15deg
Compression even on all 4 and in spec

Charlvdw · Post by **Charlvdw** » Mon Jan 14, 2013 9:19 pm

Bov?
Have you any idea what the afr's look like?
Is the knock sensor connected?

rat · Post by **rat** » Mon Jan 14, 2013 9:21 pm

Charlvdw wrote:Bov?

None. Stock T25 boosting 0.6 / 0.7 bar. As stock

SonOfAnarchy ZA · Post by **SonOfAnarchy ZA** » Tue Jan 15, 2013 9:26 am

you dont know anyone with a spare ecu that you can just test and see. the ecu might be seeing different readings from your sensors beacause its broken. and have you changed the engine coolant temp sensor?

SonOfAnarchy ZA · Post by **SonOfAnarchy ZA** » Tue Jan 15, 2013 9:30 am

you gonna have to check wiring from ecu to the main things that are gonna affect fuel consumption MAF engine coolant temp sensor ect. if a cable is not dead short it will change the value that the ecu sees

FUEL PERFORMANCE · Post by **FUEL PERFORMANCE** » Tue Jan 15, 2013 10:34 am

Pull the CA out, Fit a SR/RB , have it Tuned with Decent Management................... Fuel Sorted!

rat · Post by **rat** » Tue Jan 15, 2013 11:01 am

SonOfAnarchy ZA wrote:you dont know anyone with a spare ecu that you can just test and see. the ecu might be seeing different readings from your sensors beacause its broken. and have you changed the engine coolant temp sensor?

Got another ECU and AFM ill test with. Still stock coolent sensor might have another one as well.

O P R wrote:Pull the CA out, Fit a SR/RB , have it Tuned with Decent Management................... Fuel Sorted!

Skyline's RB also has fuel problem and its going to get worse with GT2860R's -7

FUEL PERFORMANCE · Post by **FUEL PERFORMANCE** » Tue Jan 15, 2013 11:50 am

There seems to be one common problem in this whole equation.

SonOfAnarchy ZA · Post by **SonOfAnarchy ZA** » Thu Jan 17, 2013 2:18 pm

Any luck rat

*Nissan 200SX Club - South Africa

Stock SX heavy on fuel

Stock SX heavy on fuel

Re: Stock SX heavy on fuel

Re: Stock SX heavy on fuel

Re: Stock SX heavy on fuel

Re: Stock SX heavy on fuel

Re: Stock SX heavy on fuel

Re: Stock SX heavy on fuel

Re: Stock SX heavy on fuel

Re: Stock SX heavy on fuel