Subject: Re: Spark plug cap update for Guzzi 8V models Wed Jul 03, 2019 12:18 pm
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.
Posts : 92 Join date : 2020-10-17
Subject: Re: Spark plug cap update for Guzzi 8V models Thu Dec 31, 2020 5:14 am
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
lcjohnny likes this post
Pete Roper GRiSO Capo
Posts : 9341 Join date : 2013-05-29 Age : 65
Subject: Re: Spark plug cap update for Guzzi 8V models Thu Dec 31, 2020 3:22 pm
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.
beetle GRiSO Capo
Posts : 9475 Join date : 2013-09-30
Subject: Re: Spark plug cap update for Guzzi 8V models Thu Dec 31, 2020 3:58 pm
Mine would be..if my spark plugs hadn't failed that one time...."updated" the plug caps while troubleshooting. That still irks me.
Subject: Re: Spark plug cap update for Guzzi 8V models Thu Dec 31, 2020 4:22 pm
Call it a Gee Gaw, Mark.
Posts : 103 Join date : 2019-02-17 Age : 45
Subject: Re: Spark plug cap update for Guzzi 8V models Sat Jan 02, 2021 6:02 pm
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.
Dilliw GRiSO Capo
Posts : 224 Join date : 2016-02-17 Age : 59
Subject: Re: Spark plug cap update for Guzzi 8V models Sat Jan 02, 2021 7:52 pm
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.
SMTCapeCod likes this post
Posts : 317 Join date : 2020-12-17
Subject: Re: Spark plug cap update for Guzzi 8V models Mon Jan 17, 2022 5:14 pm
Additional guidance with pictures, albeit Stelvio: [You must be registered and logged in to see this link.]