Engine trouble

[PukkaSilvia]

it wont be the rings unless there damaged or the bores were not calculated properly for the rebore.A fuel gauge is about £15. Also do a compression test,

Is it oil or is it fuel on the plugs? Does the car smoke or breath heavy?

[smoker]

Compression was 140 psi on all cylinders after the rebuild which seemed a bit low to me . I'm pretty certain the bores are sized properly as the ring gaps were all ok.

The plugs are black like it's been running too rich and soaked in oily petrol. I don't think i'm burning much oil now as the exhaust never smokes

[smoker]

Just undo the jubilee clip and remove the fuel hose on the exit of the fuel regulator and get someone to switch the ignition on while you hold the test meter up tight against the hose. The meter will have a cone shaped flexi gromet on the end to make it easier.

Test the pressures before and after the regulator.

Won't I need to test the regulator with the engine running as it relies on vacuum in the manifold to control pressure if i understand corrctly. Maybe i'm missing something

[PukkaSilvia]

Thats a good point.Im getting to used to working on fixed rate regulators at work . Install a t piece on the fuel line then.Sorry.

[umpkin]

to fit a fuel pressure gauge, its as shuan said, i had one on mine too coz my fuel reg went badly wrong and doubled the pressure, you put a T bit in the pipe between the fuel filter and the regulator, and then connect the gauge to the 3rd exit off the T bit.

i personnally would be worried to use your idea pukka, i always end up covered in petrol unless things are tightly piped up just clumsy i guess

[smoker]

If my regulator is faulty would it be best to fit an aftermarket adjustable regulator behind the fuel rail ahead of the filter ??...i guess Nissan would want arm and a leg for a new fuel rail and regulator and a used might be no better ??

[adzs12]

I have a fuel rail and regulator kicking about somewhere no doubt so forget nissan