Xc70 D5 2005 slow start only when cold

[Brendan W]

Measure the resistance of the plugs not the voltage at the terminals.
Ignition off, plugs disconnected, meter on lowest resistance setting.
You are looking at 0.7 Ohm or thereabouts.
Probes on plug terminal and head of motor.

[vampwitch]

I've had a similar problem and it looks like I'm right about my battery from other posts so far. Going for a 900CCA battery to be on the safe side. Hopefully that will cure that side of things. Next the injector!

[OWF]

Originally Posted by Brendan W

Measure the resistance of the plugs not the voltage at the terminals.
Ignition off, plugs disconnected, meter on lowest resistance setting.
You are looking at 0.7 Ohm or thereabouts.
Probes on plug terminal and head of motor.

Thanks for your suggestions, I have now tried to test the resistance of the plugs, but unfortunately didn't have any luck.

I put the multimeter on the lowest setting it has and tested to see the resistance within the wires themselves which read 0.2. However I cant seem to get a reading for the plugs themselves. The screen doesn't give a sign of any resistance reading.

I have put the negative lead on the head of the engine and on a few other places and the positive on the top / around the glow plug and nothing is given back.

Is this a faulty multimeter maybe?

Thanks again for your help.

[OWF]

Originally Posted by vampwitch

I've had a similar problem and it looks like I'm right about my battery from other posts so far. Going for a 900CCA battery to be on the safe side. Hopefully that will cure that side of things. Next the injector!

Yes will definitely be going for more CCA next time, seems like it could resolve this issue. Injectors seem fine after the leak back test.

[Leyburn]

Originally Posted by OWF

Thanks for your suggestions, I have now tried to test the resistance of the plugs, but unfortunately didn't have any luck.

I put the multimeter on the lowest setting it has and tested to see the resistance within the wires themselves which read 0.2. However I cant seem to get a reading for the plugs themselves. The screen doesn't give a sign of any resistance reading.

I have put the negative lead on the head of the engine and on a few other places and the positive on the top / around the glow plug and nothing is given back.

Is this a faulty multimeter maybe?

Thanks again for your help.

Your current local ambient temperature must be around +10'C, how is the car starting?

[OWF]

Originally Posted by Leyburn

Your current local ambient temperature must be around +10'C, how is the car starting?

At around 12'C (reading on dashboard) today it started pretty swift on the first turn. Longer cranking / a few attempts to start happens when colder, just above 0'C and below.

Can I only test the battery's CCA when below a certain degrees?

Thanks

[Leyburn]

Originally Posted by OWF

At around 12'C (reading on dashboard) today it started pretty swift on the first turn. Longer cranking / a few attempts to start happens when colder, just above 0'C and below.

Can I only test the battery's CCA when below a certain degrees?

Thanks

No glowplugs needed at 12'C. If your starting was still problematic then that would have ruled out glowplugs.

I would assume that cold cranking capacity would drop as temperature drops, there's probably a graph somewhere