I just bought a 1992 Nissan non turbo, having problems with the ingnition, when I turn it on, it raise fuel pressure but doesnt start, but this happens sometimes, and when it started, wont accelerate I clean all sensors and no go,change my fuel pressure reg, and no go, I remove the sparksplug and test the spark on each sparkplug and they have spark, so I have pressure on my fuel line and spark, but the engine wont start,...
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Sort of. There should be a relay that provides power to the pump when you first turn the key on. Then once the engine starts power is provided by way of the oil pressure switch. That way the pump won't run in an accident. The oil pressure switch grounds the fuel pump relay on some models.
do you have spark? have you checked any of your sensors like crank sensor or cam sensor you said you small fuel I would do a fuel pressure test, befor you put a fuel pump in. please let me know if this helped i could have you do few more tests if needed
Are you sure the new belt didn't jump time? How was the belt tensioner when you replaced yhe belt? Did your water pump leak onto or into your crank sensor?Are you sure you have proper fuel pressure?When you replaced the timing belt, did you make sure to find top dead center on cylinder 1 ? Just lining up the timing marks may not have worked if this is indeed what you did.If you had the crankshaft rotated 180 degrees, your motor would be trying to fire on the exhaust stroke, instead of the compression stroke. To find T.D.C. disconnect your battery,rotate your crankshaft until the piston that is marked #1 in your firing order is at the top of its stroke, this can be accomplished by carefully inserting a wooden or plastic dowel into the sparkplug hole of cylinder#1. The dowel will rise with the piston and at the point where it starts to fall will be T.D.C. Now your timing marks should line up,and you will then be on the compression stroke. good luck! hope this helps
Check fluid level first. The throttle position sensor could be faulty or misadjusted.It should be .4 - .5 volts when fully closed and 4.0 volts wide open throttle.
Next check line pressure. Line pressure at idle in drive should be 61 - 67psi.
If the line pressure is ok it will be an internal problem.