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Engine will start .If I soak the air filter in petrol it starts but only for a few secs. I guess engine is not getting fuel from the pump. The starter spinns the engine quite easily as if no petrol in the cylinders. Where is the fuel pump so that I can check? Any other checks you can suggest. Is the pump not running because of a sensor somewhere? I have tried to draw petrol throgh the petrol filter but that is difficult and I guess that it is coming through a valve etc in the fuel pump but I cannot find the pump! Any help please. Thanks Paul
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The pump is probably in the tank.
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Thanks for the info. I got some help from another site which said the pump was under the bench??? I guessed they meant the bench seat in the back above the tank. I've looked inside the sank but nothing looks like a pump. Someone said on another thread or site they had 'knocked' the pump several times and got it started. I could not find anything to knock but I unplugged and then plugged on again several times with the connectors. There are 2 plugs on the top of the tank so I guess that is more than the level sensor. It still does not want to pump to the filter. I'm going to check we have power to the plugs and seen if it's a sensor problem not giving the pump power. Will let you know how I get on. Paul
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Take a look at the small fuse/relay box by the battery .This houses the fuel system relay and fuse.Inspect the contacts for corrosion/poor connections.hth
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Thanks elekie. I've checked all these connections and relays but can't find anything corroded or bad. The car hasn't done many miles and was previously owned by a very old gentleman. (90yrs) Yes he was still driving. I was given it for my kids in case they could not handle a gearbox when they came to learn to drive but they all could so it stood SORN on the drive for a few months. I started it from time to time and all was well but now it won't fire up and i'm sure its fuel. One of the connections on the tank has power, one has not. The fuel pump fuse by the steering wheel is OK and has power on the test meter. Any more help please! Paul
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Thanks to all who replied to my earlier post. This is the update but the Micra is still not starting. If I soak the air filter in petrol the engine will start and run and rev until the soaked filter runs out. About 15 secs. So I guess sparks etc are OK. There are no fault lights on the dash such as the NATS light or the engine fault code lights (check).) None of these lights are on when the engine is run with the soaked filter. The petrol pump in the tank was full of muck. I dismantled it and cleaned it all and it runs and primes the filter and fuel rail now. I can hear it running and it stops after about 5 secs until the engine is cranked and then it runs again. The tank is about 1/4 full. I've removed one of the injectors and checked the pulses to the wiring. I put a small 12v buzzer on the leads and it buzzed on a regular basis as the engine cranked. I removed one of the injectors. Power to the injectors does not seem to do anything. I guess they work on a solenoid basis so I expected a slight click or thump as the power was applied but I don't know what to expect. Are they some sort of piezo crystal mechanism? The battery is fine and has started the car during work on it for the last two days. I've re-soldered the PCB connections on the throttle body although they looked fine and I know dry joints when I see them. The distributor looks OK. I've cleaned the rotor arm and cover terminals, and as I said earlier with petrol on the filter it runs and revs. The TPS has been removed and turns OK but as its sealed thats all I can do. Some threads have mentioned the temperature sensor which seems to flood the system onj some cars if the engine is not warmed up but I don't know where that sensor is situated so help there would be appreciated. So I'm still convinced its just fuel to the cylinders but what's stopping it getting there I'm lost for ideas now. A mate has a WM for, I think this model, but he's in London until Monday so if no luck here I'll have to wait and see if the book helps. Thanks to all for reading or any future help. Paul
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More for elimination purposes, our 96 Micra had a problem where it would start and stop within 5-10 secs.
It was caused by a corroded fuel pump fuse in the fusebox by the battery (very prone to damp). The legs had corroded away from the body of the fuse.
It must have been working when the ignition was switched on but the vibration from starting the engine caused it to lose contact.
The engine would stall and the MIL flashed, so the fuel system must be monitored by the ECU.
If you do not get any further on here, try the Micra Sports Club. There are some helpful people on there.
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Thanks Primera 97. All fuses seem OK. I'd heard that the fuses and holders corroded but these fuse boxes in-car and under bonnet are O.K. I've found the location of the temp sensor. It's below the dizzy. The diz has to be removed to get to it but on other sites they suggest poor data from the temp sensor will disrupt injector setting and I presume lack of fuel. I'll give you an update if I get any closer.Thanks again.
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Certainly looks like a fuel issue here.Is it possible to lift the injectors from the manifold while still connected to the fuel rail?Crank the engine to see if there is any fuel spray.A faulty temp sensor and/or throttle body will not cause the engine to not start.Also try starting engine with Tps disconnected.Some Efi systems have a "clear flood "mode whereby the system will shut off the injectors if a full throttle condition is seen by the engine ecu.hth
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Thanks 'elekie' for the new info. If the temp sensor does not stop the engine from starting I'll try disconnecting the TPS and then I'll take the injectors and fuel rail off and see if the injectors spray. I think the rail has a flexible pipe at the pump/filter end so with a bit of wriggling it should move enough. It's too late tonight to do any more so I'll try again in the morning. Thanks again and I'll let you know on this thread how I get on. Paul
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Thanks 'elekie' for the help. I took the fuel rail and injectors out and there was no spray. Messed about abit and got a 4 jet spray from each one. Each spray was about 6in 150 mm long. I thought that was it, problem solved...unfortunately I put it all back together, but would not start! I took the rail off again, primed the system, applied 12v to first injector, 4 jets 2 - 3 feet long. I guess there's plenty of fuel pressure, so what's missing now is a good pulse to get the jets to fire. It must be down to either a sensor or the ECU. The petrol problem has been solved but the electics now need sorting. Any help out there would be grately appreciated. Thanks in advance. Paul.
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hi i am working on a 1999 k11 micra that has the same problem as yours .my injectors are getting a pulse from the ecu (checked with led) but wont open and let fuel out .the bigger of the two wires on each injector have 12v going to them but the earth/pulse will only let .01/.1 v trough (volt meter) when i crank the starter so i think there might be a problem with the ecu .have checked all the earths at the ecu and all good .can you tell me if you sorted your car thanks RYAN
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are they getting any fuel though
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only if i pulse the earth wire on injectors with a wire from - pole on battery
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is it possible you have a problem with the relay for fuel then seeing as it might be getting its earth via the injector to earth circuit (or even a fuel pump earth problem)
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everything is working as it should be but the injectors are not getting the right pulse (not strong enough ie voltage) i have good fuel pressure good spark ,2 second hand dissys ,2nd hand throttle body ,fuel pump relay working , My engine check light is flashing all the time when i put on the ignition and i tried to get the flash codes but they cane out different to any other micra i have worked on in the past ,they flashed 14 slow and 1 fast then 14 slow and 2 fast
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hi just put in a second hand ecu ,transponder and key and its running fine .the problem was in the ecu .the ecu was not pulsing the injectors properly (enough voltage )hope this will help someone else
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yes im sure it will
did you put a starter charger on your car or something to melt the ecu as ive always seen these as being tough little ecus
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its a customers car .he said over the last few weeks it missed every now and then and the engine check light would come on and off .he drove home last week came out next morning and car would not start and had a good battery .i know they normally dont give any bother and that is what confused me and the fact that everything was working including the injectors (i checked pulce with a LED) but i think the output from the ecu was not strong enough to open the injectors .if any body has any trouble with a k11 micra try the flash codes first and if it flashes in a way other then it should i would go 4 a secondhand ecu transponder and matching key but try a distributor or trothlebody and a temp switch (under distributor 2 wires) first .ps if your checking your injectors while still in the engine bay but upsidedown be carefull
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Hi there
I have got what appears to be the same problem on a nissan micra automatic petrol,ie the engine starts but then conks off.Could you be so kind to tell me how you solved your problem
kind regards kevin
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Check the fuel pump fuse and holder in front of the battery.
The pre-R reg are VERY prone to damp.
Is the Engine warning light on?
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