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5

If the vehicle has GDI (Gasoline direct injection) then yes there will be a low pressure or lift pump and a high pressure pump. One run on 12 volt the other run by the engine. I don't think your vehicle is equipped with GDI but I am not sure. I am not aware of any gasoline production vehicles other than GDI that come equipped with more than one fuel pump.


4

Sounds strange. I can understand that the absence of a crank position sensor signal can prevent the engine from starting (the ECU won't allow the car to run without it). The lack of signal could also prevent the fuel pump relay from activating and priming the fuel lines. But I'm struggling to buy that a bad crank position sensor would result in physical ...


2

If there is enough of a variance in tire diameter, it could most definitely be the problem. If the front tires are registering one speed and the rear tires are registering another speed, the difference could be causing the ABS computer to have fits. The difference would need to be a bit though, but don't know exactly what the difference would be (is probably ...


1

Sounds like the clutch may be going bad in the A/C compressor. If it was slipping when engaged, you'd be hearing a terrible noise when the compressor is turned on, then water on it would definitely cause it to change in pitch. I don't know how you could test it, but I'm pretty sure if you remove the belt and then engaged the clutch, you could probably tell ...


1

The two most likely causes are: Something is wrong with your battery. Your car is more than old enough to have gone through several batteries, so it may be due for one more. There are many ways that a battery can fail, so the green indication might not be telling you the whole story. If the battery is relatively new, it may still be under warranty. A ...


1

There are really two related questions here: How is the engine constructed (timing belt vs. timing chain), and What is the service interval on the belt or chain. As has been pointed out there are design tradeoffs. Chains, in general, tend to last longer. Belts, in general, are quieter and might be easier and/or less expensive to change. The service ...


1

The engine in your Primera should be the QR25DE. According to the Wiki page, it should be equipped with a steel timing chain, not a belt. Your mechanic is spot on. Timing chains are usually good for the life of the engine (rare occasions otherwise). A timing belt/chain connects the camshaft and crankshaft together, making them work as one. The camshaft ...


1

I am not sure sounds like ground to computer or the Rev circuit in computer going out .when it gets bad won't let engine reach but a certain rpm then shuts motor off .I'd take it have computer checked ? loseing ground on that Rev circuit make get shut down quicker.less Rpms to kill motor.bad as I hate to say it sounds like circuit losing it's ground or ...


1

I am inclined to believe that your engine bay is heating up to a certain point and causing some component that controls engine fuel or spark to fail with said increased heat. I would say check your camshaft or crankshaft angle/position sensors. Especially if they are positioned near the top and rear of the engine but this would depend on the car.


1

Ok, as it turns out, the "whining" noise, was actually caused by a leaking hose (ventilation from the valve cover), annoying and hard to find, one of my friends nailed it right away. Thanks a lot for your help after all.


1

It sounds like your engine is oil starved due to how old/dirty your oil is (mileage). The first thing you need to do is get your engine flushed, then quickly followed by an oil change (with filter). 13000km (or ~8000 miles) is quite a bit to put on an oil change/filter. I would bet your owners manual probably says to change it every 5000km. Smaller engines ...


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