gonguana
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- Joined
- Aug 12, 2011
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Hi guys,
I have a Nissan Navara 9/2005 petrol/gas. When I purchased this truck a few years ago the gas was already fitted. On the compliance plate it stats 2006 for the fit.
The question I was hoping to put forward is maybe 2 fold. Firstly when I am in 5th gear and doing 110 kmh on the freeway it is fine until I start to hit a bit of a hill. Then I can watch the speedo drop down to about 90 – 80 kmh. The foot is flat to the floor and it sounds like the throttle is fully open as i can hear a brrrrrrr sound if it trying to suck air in. Also I might point out that this is when the truck is empty and running on premium fuel. Gas is worse obviously. This unit is naturally aspirated.
I am traveling 130km and using over one quarter of a tank of fuel. Am i just trying to expect to much from the truck. If i drop back to fourth gear and plant my foot the truck picks up speed very slowly and will evntually make it back to the 110kmh speed but be doing over 3,500 rpm.
Q,So, Could the lack of power be simply due to valve wear and I need to get the head serviced and valves ground?
Q, If the above is true, Could the gas conversion have caused this? It’s got 130,000 on te clock.
Also would I be better getting rid of the gas conversion and having the truck re-tuned?
Thanks in advance guys for all your suggestions.
I have a Nissan Navara 9/2005 petrol/gas. When I purchased this truck a few years ago the gas was already fitted. On the compliance plate it stats 2006 for the fit.
The question I was hoping to put forward is maybe 2 fold. Firstly when I am in 5th gear and doing 110 kmh on the freeway it is fine until I start to hit a bit of a hill. Then I can watch the speedo drop down to about 90 – 80 kmh. The foot is flat to the floor and it sounds like the throttle is fully open as i can hear a brrrrrrr sound if it trying to suck air in. Also I might point out that this is when the truck is empty and running on premium fuel. Gas is worse obviously. This unit is naturally aspirated.
I am traveling 130km and using over one quarter of a tank of fuel. Am i just trying to expect to much from the truck. If i drop back to fourth gear and plant my foot the truck picks up speed very slowly and will evntually make it back to the 110kmh speed but be doing over 3,500 rpm.
Q,So, Could the lack of power be simply due to valve wear and I need to get the head serviced and valves ground?
Q, If the above is true, Could the gas conversion have caused this? It’s got 130,000 on te clock.
Also would I be better getting rid of the gas conversion and having the truck re-tuned?
Thanks in advance guys for all your suggestions.