Can anyone tell me the correct gap on a set of NGK BKR6E-11 plugs please for an early 94’ 1.6 MK1. My feeler gauge feels like 0.80 but should be 0.40, is this correct?

Right so I’ve got an old type steel feeler gauge and when I’ve checked it, the gauge that sort of fits has an 80 stamped on it, now will that be 0.80 mm or 0.08mm?

It it’s 0.08mm the gap will be tiny. I’d guess it’s 0.8mm. A 0.08mm blade will be quite flexible, a 0.8mm blade will be stiff. Are the definatly metric blades?

Its prob 80 thou. That is to say 80 thousandths of an inch. 25.4 (metric inch)/1000 X 80 = 2.032mm I have several books of feeler gauges in my possession, metric and imperial. There is no .08mm blade. I have .1 and .05. Those are the thinnest blades in the metric book. It is useful to rememb…

Sorted I think, I put the 100 and the 10 gauge together, I take it this is 1.1mm. The car runs well and seems smoother than before but the gap was definatly smaller with the old plugs.

I was under the assumption that plugs these days are pre-gapped.

They are, in theory! They also have plastic or cardboard protectors over the plug ends to preserve the gap. I always check, and invariably find the gap in error. No doubt all garages do the same, they would never take them out of the box and fit them without a second thought! Regards Geoff …

They are already pre gapped that is what the 11 means in the item number at the end. M-m

Spark plug gap

Technical Area Engine, Transmission, Exhaust etc

Taxi_Driver 9 March 2014 13:31 3

1.1mm or 0.044 in old money