1994 L400 Cold Start trouble

[outdoorzy]

Cold start issues. My L400 runs great, except for the cold start. I let the plugs warm up then start. Always turns over but rough and blows smoke. Few seconds later it runs good. Anyone have the same trouble?

[Rising Sun Auto Import]

Cold start issues. My L400 runs great, except for the cold start. I let the plugs warm up then start. Always turns over but rough and blows smoke. Few seconds later it runs good. Anyone have the same trouble?

Replace glow plugs if not done yet.
Very simple.

Steven

[mac_stang]

Yup, replace those plugs...but use good ones, my cheep chinese plugs didnt even last 20k.
Mitsubishi plugs are often changed out due to miss diagnosis.
They are supposed to last quite a long time...apparently?


Brad.

[jessef]

Read this before you replace your glowplugs.

Could be cold start adjustment, injection pump main shaft seal and/or glowplugs.

http://www.delica.ca/forum/problems-sta ... -8560.html

[MardyDelica]

hi, check the glow plug but not the glow plug all the time:
this is not 4d56 engien its a 4m40 engine:
diff type of system. big job to do replacing the seal
e-mail me pls if need help
cheers;
Mardy

[ragenasian]

I have just replaced the injection pump seal and o-ring. It wasn't that bad but just make sure you mark everything so you can put it back in the right way. If you don't you could get the timing off. Also replaced the glow plugs and put in a new generation glow plug rail. Starts great now and am interested in seeing how it starts on these soon to be very cold days.

[Steve, Melissa & Family]

My van was starting really rough, with clouds of white smoke, and charging light dimly flickering, rebuilt the altenator and all is good again.

[Van Diesel]

Try this out as a good temporary fix. I had the same problem and the canola oil worked. I also plan on eventually replacing the injection pump seals.

http://www.delica.ca/forum/white-smoke- ... -7463.html

[delicat]

Same here, pajero isn't starting easy. This morning i had tomcrqnk for over a minute and smoked myself out. I rebuilt the wire/bus-bar at the glow plugs, put new glow plugs, rebuilt the ECU and i'm pretty sure I still have 0v at the glow plugs! Starts fine if I hook the glow plugs directly to the batteries. I'm getting out of ideas and very frustrated!

[tonydca]

Same here, pajero isn't starting easy. This morning i had tomcrqnk for over a minute and smoked myself out. I rebuilt the wire/bus-bar at the glow plugs, put new glow plugs, rebuilt the ECU and i'm pretty sure I still have 0v at the glow plugs! Starts fine if I hook the glow plugs directly to the batteries. I'm getting out of ideas and very frustrated!

Duff glow start relay or the connections to it? Can you hear it click when you first turn the key?

If so, could check for 12V on both sides of the relay when it fires up...

[delicat]

It's a 2.8 so no click (quick plugs). I could test and trigger the relay I guess?

[tonydca]

Is the 2.8 Pajero and 2.8 Delica glow plug system the same or different for the same engine? (4M40)

On mine (late-94 built), when it is stone cold, as soon as I turn the key to "On", there is an immediate and loud "click" from a relay which I am 90% sure is in the upper-left passenger side of the engine compartment just below the hood line.

After about 3 seconds, there is another click, which I understand is the "fast-heat" system switching off when (supposedly) the plugs should be warm. Crank, start, and away we go, the amount of smoke depending (for now) on how cold it is.

After driving for about 1 min or so, I hear a second "click" off, which I understand is the lower-power plug circuit switching off once the engine itself starts to get warm.

So on your system you don't hear any relays triggering at all? Hmmm......

[tonydca]

With the temp dropping to a brisk +6 degC this morning (Brr...) it was a real pig to start up. Gotta get those glow plugs. Frustrating...

[delicat]

Quite interesting tonydca what you're saying about the clicks. I'm pretty certain the newer Paj and 400 have the same system and I've only driven both only in the summer so never heard any clicks which are more typical on pre-94 L300 (double click system). I was under the impression that the newer style (quick glow) didn't click, just wait a second and crank... I could be wrong.

I'll test my relay (isn't there 2) today and will let you know.

Cheers,
Mr. D

[ShaneA]

My L400 operates exactly how Tony describes.