Mkii V6 Ignition Coils And Sparkplugs

[Chrisall]

Hi, our MKII V6 Galaxy feels a little rough under around 1500 revs, especially when it's cold. I've searched the forum & think one or more of the coils may be faulty. I've checked for faultcodes with VAG-COM, but there's nothing stored. I had a look at the coils today, but came across a number of issues:

 

1) How on earth are you supposed to remove the connectors off the coils? On 3 of mine the little tab that you are supposed to press is broken & I don't want to break the connector any worse than it already is. I was going to remove the coils to have a look at the sparkplugs, but in the end I removed the coils with the connectors still attached.

 

2) Is it possible to test the coils with a multimeter, or is it just a visual check for cracks, arcing etc? I know one of them has been replaced recently (the one nearest the battery) but the other 5 look like the originals and are certainly tight in the head.

 

3) Finally, is there a special spark plug socket available for the V6? I have a resonably long (185mm), thin-walled sparkplug socket but it is still too short and too tight in the head to get a grip on the plug & I don't want to snap an insulator when trying to change them.

 

Thanks in advance,

Chrisall.

[sepulchrave]

1. You can slip a watchmakers screwdriver into the lug and persuade it to come out that way.

 

2. You can easily make a comparative test and the coil which is significantly different from the others is at fault.

 

3. The sparkplugs are very small and are a motorcycle type size, are you using the right size socket?

Edited February 15, 2008 by sepulchrave