7mgte ignition issues

Tyroneous

New Member
Joined
May 8, 2020
Messages
1
Hi everyone. I have an issue on my mk3 7mgte auto.

It starts easily and runs ok except it doesn't appear to be running on all cylinders all the time.

Using a timing light, the coil that does #1 and #6 does odd things. #1 will fire as it should but #6 won't show anything on the timing light, sometimes it does but the light flashes a lot faster than #1. And if i take #6 lead off then the engine definitely runs rougher. Have new plugs and have tried various 2nd hand leads.

Have checked coil packs out and their resistance is in spec and there is 12v to them. Any ideas?
 

3p141592654

90T
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Oct 11, 2005
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Thousand Oaks, CA
You need to isolate which cylinder is bad. Disconnect plug wires one by one and find the one that doesn't make a difference to engine speed.