lgreen88095

lgreen88095

Member
Hello there is a material type of pipe coming off my fuel filter but I dont know where it is supposed to be connected to. I will put some pictures on here hope someone can help as I am still having problems with cold starts despite changing glow plugs and testing the power on the plug leads with a multimeter.
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Its probably the map sensor pipe it goes from the filter to the air intake manifold underneath near cylinder 4/5
As for glow plugs hope you bought decent ones
If you have taken off all the wires and tested each wire Individually for voltage and all is well
Put a multimeter on the positive of the battery and the negative on each Individual glow plug thread tip .
Should read around 11 volts if one Doesn't register or really low duff plug
 
Last edited:
Glow plug more likely check you haven't any bubbles in the fuel fitter to pump pipe the clear one,next when you leave it overnight .
 
Grit Valve said:
Its probably the map sensor pipe it goes from the filter to the air intake manifold underneath near cylinder 4/5
As for glow plugs hope you bought decent ones
If you have taken off all the wires and tested each wire Individually for voltage and all is well
Put a multimeter on the positive of the battery and the negative on each Individual glow plug thread tip .
Should read around 11 volts if one Doesn't register or really low duff plug
Click to expand...
You will get a reading of about 1 or 2 volts doing that as you are reading the volt drop between the positive battery terminal and the positive applied to the glowplugs.:rolleyes:
 
Datatek said:
You will get a reading of about 1 or 2 volts doing that as you are reading the volt drop between the positive battery terminal and the positive applied to the glowplugs.:rolleyes:
Click to expand...

Yes true, well pointed out .
Normally I would just do a spark test via the tip and positive on the battery no spark no plug :)
 
Grit Valve said:
Yes true, well pointed out .
Normally I would just do a spark test via the tip and positive on the battery no spark no plug :)
Click to expand...

Even that is wrong, if you have 12 volts at both ends there will be no spark whether the glowplug is good or bad unless you mean with the glowplug feed wire off. Even then it will only show an open circuit glow plug, not one that is under performing.:)
 
Datatek said:
Even that is wrong, if you have 12 volts at both ends there will be no spark whether the glowplug is good or bad unless you mean with the glowplug feed wire off. Even then it will only show an open circuit glow plug, not one that is under performing.:)
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Yes with the feed wires off ok you can do an oms test as well but I find they usually go completely I've never had a under performing one either works or not
 
Glow plugs either work or they don't there is no in between. Remove the wires from them and do a continuity test terminal to head. If there is continuity, providing you have sufficient voltage feed they will work, if not they won't simple as that.
 
wammers said:
Glow plugs either work or they don't there is no in between. Remove the wires from them and do a continuity test terminal to head. If there is continuity, providing you have sufficient voltage feed they will work, if not they won't simple as that.
Click to expand...
There are plenty of cheapo glowplugs around, as members on here have found, that work but do not heat up sufficiently to start the engine. None of the tests suggested will show that up, an ammeter in series with the glowplug is the only possible way and even that is not a reliable test.
 
Datatek said:
There are plenty of cheapo glowplugs around, as members on here have found, that work but do not heat up sufficiently to start the engine. None of the tests suggested will show that up, an ammeter in series with the glowplug is the only possible way and even that is not a reliable test.
Click to expand...

I have never seen a glow plug cheap or otherwise that providing sufficient voltage was available would not heat enough to start the engine. However cheaper versions do tend to fail more readily. Having cheap plugs and a Hot Fix fitted is a fail waiting to happen.
 
wammers said:
I have never seen a glow plug cheap or otherwise that providing sufficient voltage was available would not heat enough to start the engine. However cheaper versions do tend to fail more readily. Having cheap plugs and a Hot Fix fitted is a fail waiting to happen.
Click to expand...
Ah well, for once I have seen something you haven't seen, new cheapo glowplugs that just did not get very hot:eek:
 
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