[Bigdogder]

My i30 is a nightmare to start in the morning when the temp is in the minus. I put s new battery in and 4 new glowplugs and it is still doing the exact same. Had anyone had this problem? I have spent over £700 as the garage broke 3 glow plug ends and the head required to be removed. Paid 700 and im back where i started

[Dazzler]

Welcome,  That is pretty frustrating,! Maybe a fuel issue made worse by the cold weather?

[Phil №❶]

There's an 80 amp relay in the engine bay to light the glow plugs, is that operating corectly 

[Asterix]

 

If the coolant temp sensor doesn't read the right temp then the control unit won't know how long time the glow plugs should be active, so have the sensor checked.

Consider yourself lucky. Only 700 GBP. I had to spend 2200 GBP as the glow plugs wouldn't leave the head, required a 2. hand head in the end.

[eye30]

I have spent over £700 as the garage broke 3 glow plug ends and the head required to be removed.

Surely the garage should cover this.... unless they said prior to starting it was a possibility

[Bigdogder]

Its not even just the cold. It wont start if its been sitting longer than half a day. The garage broke ends off 3 glowplugs and gave me the car back. Had to take it to another garage to get head removed to get broken ends out. They were trying to say it was a fault in the design of the engine

[Bigdogder]

A friend has a laptop to link to car to check for any faults. Hopefully it will show up something.  Could it be the injectors?  Ive got to the point im ready to trade it in. Its 5 year old and only done 45k

[Phil №❶]

Did the car emit any whitish smoke when it starts, this is a sure sign of glow plugs not operating, but as you haven't mentioned it, you could be looking at the wrong area. I'd be checking the whole system for any leaks, the fuel quality and the fuel filter. Has the filter been recently changed, there are 2 types for i30's. As frustrating as it is, the car won't work properly until the correct fault is rectified.

[Dazzler]

A friend has a laptop to link to car to check for any faults. Hopefully it will show up something.  Could it be the injectors?  Ive got to the point im ready to trade it in. Its 5 year old and only done 45k

It could be the injectors. But they are an expensive fix so hopefully not.

[Bigdogder]

Yea everytime it eventually starts there is a big cloud of white smoke. After i eventually get it started it will start first go for the rest of the day no problem

[Phil №❶]

Well that's glow lugs alright, but I'd still be getting the circuitry checked out as well. If that big 80 amp relay is not sending power to the plugs that it will do what it is doing, but not because the plugs are faulty.

[Bigdogder]

Just had a look at the car and the clear fuse for the glow plugs has blown. Hopefully thats all thats wrong. Does the fuse just pull out?  Would there be anythinh wrong with the relay?

[Dazzler]

Just had a look at the car and the clear fuse for the glow plugs has blown. Hopefully thats all thats wrong. Does the fuse just pull out?  Would there be anythinh wrong with the relay?

Hopefully that wasn't all that was wrong all along? I'd just replace the fuse and do some testing in various conditions.

[sundiz]

If the fault turns out to be in the fuse, you should have a word with the guys who broke down your glow plugs...  You should be able to negotiate some sort of refund.

[Bigdogder]

Sorry for sounding like a beginner, but how do you get the fuse out? I dont think it just the case of pulling it out. Any ideas?

[Phil №❶]

@cruiserfied

[Popgnome]

Thanks for the heads up guy's as I have similar probs. Will look into some of the recommended  Fixes

[diesel1984]

Hi
 Did you tried to check voltage on glow plugs with multimeter?? Do you have one?

If there is 0V on glow plug plate then.. yes you can check the fuse and relay..

Here is the service information how to check the glow plug system on your engine:

PREHEATING SYSTEM
Conditions before inspection :
Battery voltage : 12V
Cooling water temperature : Below 30℃ (86°F)
(Disconnect the water temperature sensor connector).
 
 

Reconnect the water temperature sensor connector after inspection.
1. Connect voltmeter between glow plug plate and plug body (ground).
2. Check indicated value on voltmeter with ignition switch ON.
3. Check that preheat indication lamp lights for about 6 seconds and indicates battery voltage (about 9V or over) for about 36 seconds immediately after ignition switch is turned on. [At cooling water temperature 20°C (68.0°F)]
 
 

Continuity time varies depending upon cooling water temperature.
 
4. After checking 3, set ignition switch at START position.
5. The system is normal if battery voltage (about 9V or over) is generated for about 6 seconds during engine cranking and after start operation. [at cooling water temperature 20°C (68.0°F)]
6. When the voltage or continuity time is not normal, check the terminal voltage in glow control unit, and single parts.

 

GLOW PLUG
1. Check the continuity between the terminal and body as illustrated. Replace if discontinuity or with large resistance.

--------------------------------------------------------------------------------

Standard value : 0.25Ω

--------------------------------------------------------------------------------
 
 
 

Remove oil from plug before measuring as glowplug resistance is very small.
 
2. Check for rust on glow plug plate.
3. Check glow plug for damage.

 

GLOW PLUG RELAY
1. Remove the glow plug relay.
2. Inspect the relay continuity.
–  Using an ohmmeter, check that there is continuity between terminals 2 and 4.
If there is no continuity, replace the relay.
–  Check that there is no continuity between terminals 1 and 5.
If there is continuity, replace the relay.


 
3. Inspect the relay operation.
–  Apply battery positive voltage across terminals 2 and 4.
–  Using an ohmmeter, check that there is continuity between terminals 1 and 5.
If there is no continuity, replace the relay.


 
4. Install the glow plug relay.