Engine Knock When Hot
#1
Engine Knock When Hot
This is my first Harley and still getting used to the air cooled engines. While I was at the Laconia Bike Week I got stuck in some pretty dense traffic at Hampton Beach and the bikes got real hot. Was contemplating on pulling over for a little while but we were almost out of the traffic so we kept going. Not too long after when I released the clutch I could hear a knocking or clunking sound. That definitely made us pull over. Waited for about 45mins for the bikes to cool off and the drove away and it never did it again. Happened to me again yesterday in mild traffic but it's extremely hot here lately (Montreal). Any ideas what the hell that is and how bad it is? How the hell can you judge how hot the bike is with no heat guage?
Bike is 2010 Nightster with about 700miles on it.
Thanks
Bike is 2010 Nightster with about 700miles on it.
Thanks
#2
#3
This is my first Harley and still getting used to the air cooled engines. While I was at the Laconia Bike Week I got stuck in some pretty dense traffic at Hampton Beach and the bikes got real hot. Was contemplating on pulling over for a little while but we were almost out of the traffic so we kept going. Not too long after when I released the clutch I could hear a knocking or clunking sound. That definitely made us pull over. Waited for about 45mins for the bikes to cool off and the drove away and it never did it again. Happened to me again yesterday in mild traffic but it's extremely hot here lately (Montreal). Any ideas what the hell that is and how bad it is? How the hell can you judge how hot the bike is with no heat guage?
Bike is 2010 Nightster with about 700miles on it.
Thanks
Bike is 2010 Nightster with about 700miles on it.
Thanks
Put in some 15/50 Mobil 1 and that alone will bring your operating temp down 20º.
A stage one is a good idea to help it run cooler also, the bikes come leaned out from the factory for EPA laws.
For the clunking noise you may need to adjust your primary chain more than likely.
Some Mobil 1 75/95 Gear oil in the primary is a good idea also.
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#8
Synth. oil and a good oil cooler works wonders. If your scoot is shifting correctly, I doubt it would be the primary chain that made the noise, probibally ignition knock from heat and lean condition. Pull your plugs and check them for carbon deposits, that will cause pretty much the same thing.