Spark plug gap??

[Adam]

So the Beru spark plugs come pre-gapped to 1.66mm?

[Tool Pants]

If people are using the Bently manual then there are errors.

The 1997-1999 2.5 uses a 2 side electrode plug. The gap is .8 mm.

The 2000 -2004 2.7/3.2 uses a 4 side electrode plug. The gap is 1.6 mm.

You can see both styles of plugs in the picture.

[blinkwatt]

Damn Tool Pants,I swear you have a picture of everything!

[Tool Pants]

Almost.

You can check the gap on the 2 side electrode plug. The factory shop manual says .8 mm. Bentley says 1.6 mm but that is for the 4 electrode plug.

No clue how you would measure/check the gap on a 4 side electrode plug. That style plug is said to be pre-gapped from the factory.

Too many plug threads going on at the same time.

[RandallNeighbour]

The question about berol plugs from Porsche coming pre-gapped was never answered on this thread. This afternoon, I'm changing my plugs and the berol ones (2 sided) for my 97 look ungapped.

Anyone know for sure if they're pregapped or not?

[RobZ]

I have the same question. I purchased my set from Suncoast and have heard that they are and that they are not pre-gapped. I was under the assumption that because you need to specify your year and motor they were pre-gapped.

[RandallNeighbour]

Ok, Rob, I threw caution to the wind today....

1) The porsche 2 prong plugs for my MY97 were very close to .8 mm as ToolPants said they should be... more like .9 though. I left them the way they were and only fiddled with one or two of them that seemed far too close or too far away from the center post.

2) The plugs I removed today were gapped far more than the ones that I put in.

The car runs well, so I think that checking them would be good to do when you get to it.

The project isn't difficult, but does take a lot of time if you've never done it before. The first one took me 30 minutes. The next two on the same side took 15 minutes each. The three on the other side took all of 20 minutes tops. Learning curve.