Spark plug cap update for Guzzi 8V models

Grignapoco Posts : 189 Join date : 2016-09-09

To help the original caps last a little longer add a little silicone grease to top of the plugs. This helps prevent the rubber sticking to the ceramic and also keeps water out. When removing the caps use a screwdriver inserted in the drain hole above the exhaust and push the cap up and off This avoids the need to pull from above.

Biondino Posts : 263 Join date : 2020-10-17

It seems that I am one of the few that still has original factory plug wires. I always use 1" cloth cutting to pull caps carefully parallel with the plug tunnels when accessing plugs. And I utilize ACF-50 inside and out of connectors themselves upon assembly. 52,000 miles

GRiSO Capo Posts : 10706 Join date : 2013-05-29 Age : 67

Mine are still fine, they're off the 2012 wreck I bought for the motor. Never had a problem with them since I learnt the trick of levering them off from underneath with a screwdriver inserted through the cooling tunnel above the exhaust manifold. It's a good idea to put a smear of rubber grease on the sealing rings on the caps as well, especially in damp climates or ridden when roads are salted.

GRiSO Capo Posts : 10198 Join date : 2013-09-30

Mine would be..if my spark plugs hadn't failed that one time...."updated" the plug caps while troubleshooting. That still irks me.

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Don Abbondio Posts : 6086 Join date : 2014-03-13 Age : 69

Call it a Gee Gaw, Mark.

Grignapoco Posts : 105 Join date : 2019-02-17 Age : 47

Add me to the "unnecessarily gimped his plug wires while troubleshooting" club. I had a periodic idle "chuff" in hot weather that ended up being a matter of fuel trim adjustment and other fine tuning measures. Sadly, my poor wires met an untimely and gruesome butchering before figuring that out.

GRiSO Capo Posts : 234 Join date : 2016-02-17 Age : 61

While I appreciate the investment in time and effort to make the OEM caps work, they are still a bad design and prone to eventually fail. Better to switch them to the NGKs and be done with this.

Tiradritto Posts : 324 Join date : 2020-12-17

Additional guidance with pictures, albeit Stelvio:
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