odd starter

[bobhope]

getting more frequent now but engine turns over and starts , try to rev and cuts out , try to restart just smokes but does start as if fuel starvation ?

when trying to restart all the dash lights that come on when stating iluminate and the buzzer for the glow plug is continuous .

leave for a few miniute and starts ok , only happens so far when cold and not all the time.

only started to happen past few days any ideas , the filters were changed 4 weeks ago , so no issues dirty filters .

any ideas ?

 

[zippy656]

my GUESS take a look at the battery terminals.. see down load section..

 

[clivvy]

yeah does sound electrical, perhaps a bad earth or as Zippy says, possible bad connection, broken clamp or cracked wire.

 

[zippy656]

http://www.nissan4x4ownersclub.com/downloads/workshop/wk12.pdf

this is what i was thinking of..

thought the earth is also a week point

 

[Adz]

Air lock although that should clear itself
Blocked filter housing
Crack off an injector pipe & make sure its squirting out not dribbling

As above

Check wiring

Also...

What fuel do you use.?

 

[bobhope]

sorry for late reply working nights and just got up

well , freezing cold this morning when came out of work , fired up on the button , i did think glow plugs were causing as only happens when cold . so guess that fine.

I just run on diesel dont use bio fuel . from the cloud of smoke when trying to start i would think that fuel getting through but not burning , when it fires up it runs perfect no smoke at all .

these intermittent faults are a pain , will check the earths as mentioned .

 

[bobhope]

well checked all earths and connectors all seem ok . today a real pain to start even when warm, so my next thought is fuel . since the problem has mainly started since the fuel filter change im thinking that the diaphram in the priming pump has split , the filter is on tight , does anyone have spare i could buy .

now when you start its like the fuel is slowly pumping through to start then eventually fires up

 

[Timbo_1975]

If you are sure the filter is on properly, and its sealing, then could well be the primer diaphragm.

Also check the rubber & steel hoses on the bulkhead...

 

[bobhope]

filter is on as tight as can get it , even after running the priming pump goes soft , pump it and goes solid again :naughty it just seems that it wont hold any pressure.

 

[Timbo_1975]

Insert length of clear hose before and after filter and look for air bubbles.

 

[bobhope]

thank you for reply timbo . i've just had a look and can hear the bubbles of air coming from top of plunger . going to work in bit , got to use the wifes car.

 

[Adz]

To eliminate the filter, bypass it by just looping a hose to the 2 bulk head pipes :thumbs
If the problem goes then you know its the filter or filter housing. :thumbs
If its still there then move backwards to the tank by getting a jerry can & stick the hose in that so your then by passing the tank, pipes, filter & housing. :thumbs
If its still there then it will be from the pump up to the injectors. :thumbs
Crack off all injector rails & mini filter to make sure diesel is getting through constant with no bubbles. :thumbs
Simples :lol :augie :thumbs

 

[bobhope]

dosen't the priming head also have a 1 way valve (diaphram)to keep the pump side pressurised , i know fuel getting through cause it does start eventully just seems to take a while to pull through .

if i eliminated the filter housing and just connected the hoses together from the filter head would this not show same fault as no pressure in line .

 

[Timbo_1975]

thank you for reply timbo . i've just had a look and can hear the bubbles of air coming from top of plunger . going to work in bit , got to use the wifes car.

As an emergency measure i've run a bead of silicone around the primer knob to seal it up til you can replace the filter head.

 

[bobhope]

thanks timbo , off to work now will try your idea tomorrow when i get up , dave