Heater Plugs

[Guy90]

I'm having to replace the heater plugs on my 2.5N/A for the second time this winter. The tips keep cracking.

Before I put the new engine in only needed to replace every couple of years. Any ideas what could be causing them to fail so quickly?

Guy

[davidlandy]

how long do u pre heat it for?

[Guy90]

how long do u pre heat it for?

Depending on how cold between 30 and 45 secs.

Guy

[iianorthants]

on the series i used to do 10 secs on normal morning, 20 on really cold morning and started every time 30-45 sec sounds a bit long.

[Guy90]

on the series i used to do 10 secs on normal morning, 20 on really cold morning and started every time 30-45 sec sounds a bit long.

Problem is that you only get one possibley two goes at it before you start to loose the battery. 20 secs is what I can get away with in the summer.


Guy

[cstokes]

You said the fault has only occured since you have replaced the engine, this would suggest that it could possibly be a fueling fault or if the engine oil is over filled it could be drawing a little on start up. This would cause the fault with the glow plugs that you are getting. I would start with the fuel pump timing and go from there, you may find it is over advanced a little.

[Guy90]

You said the fault has only occured since you have replaced the engine, this would suggest that it could possibly be a fueling fault or if the engine oil is over filled it could be drawing a little on start up. This would cause the fault with the glow plugs that you are getting. I would start with the fuel pump timing and go from there, you may find it is over advanced a little.

Did have some problems with fuel pump timings. Was set professionally in the end. Plugs are a little sooty as well so maybe not as profeesional as I thought.

Thanks for the tip.

Guy

[hobbit]

Just a quick thought on the glow plugs line,do you have the right voltage ones, assuming that defenders use only one voltage

[hobbit]

Just a quick thought on the glow plugs line,do you have the right voltage ones, assuming that defenders use only one voltage

And have you checked the voltage going through them?

[Guy90]

Just a quick thought on the glow plugs line,do you have the right voltage ones, assuming that defenders use only one voltage

And have you checked the voltage going through them?

Think so. I order from Craddocks and they don't ask about voltage.

guy

[hobbit]

Did you actually test the plugs before fitting, sometimes one can be new but not work

Not had much to do with defenders, so general rules only, if the glow plugs are all working ok, the fuel side must be a consideration, especiall if there is a bit doubt on the timing setting.

[Mace]

Guy. This is not an answer to your problem but an observation about my old NAD. I used to wait 30 secs min when it was cold, 15 secs in the summer. I thought I'd change the plugs over for new ones, cheap as chips from paddocks. It actualy became harder to start with the new plugs in. I cleaned all the terminals and tried to tighten the connectors but ended up breaking them through force. Dare I say it I went to Halfords in desparation and bought some Bosch ones (more expensive) and the starting improved. I reckon you get what you pay for, even though I don't like it.

[diesel_boy]

get your self a blow torch and heat the inlet manifold  save on the heater plugs    :lol:  :lol:

[kevinf]

have you checked the relay?

 is it sticking on and suppling current to the plugs after you have started

 or is the live feed from the ignition switch to the relay still present after  
 the ignition key is released ?

 kevin