Planet Minis

donkjote · 05-08-2008, 01:50 PM

I have a 1978 Z50 and the engine is making a clattering sound. It runs fine but the noise worries me. Attached is a video with sound. Can anybody tell what this might be?

[ame=http://video.google.com/videoplay?docid=737108351965083663&hl=en]1978 Z50 with noisy engine[/ame]

delzy · 05-08-2008, 04:11 PM

I notice that's a '73 tank, and I'm not sure about the side cover. But yes, valve adjustment is in order for your bike.

donkjote · 05-08-2008, 09:15 PM

Thanks. it is a 1973 model. i don't know what i was thinking. it also makes other noises, especially when cold. then as it warms up it stops. i have attached another video. is the sound heard in the video related to the valves? I have never worked on these bikes but would like to learn. Is there anybdy in the DFW metroplex that works on them or can show me a little? [ame=http://video.google.com/videoplay?docid=1142516135158829149]More different noise from troubled Z50[/ame]

FastMC · 05-08-2008, 11:11 PM

The first clip it just sounds like ticky valves, but in the second clip it sounds like cam chain clatter. I'd pull the cam end cover off and check the cam journal for wear. The cam may have a lot of slop in the head.

slapaho16 · 05-08-2008, 11:18 PM

don call me tomorrow names ryan im in arlington during the week and in mesquite on the weekends so ill be around 2147340615 ill get you fixed

slapaho16 · 05-08-2008, 11:22 PM

also it sounds to me like a blown head gasket

05-08-2008, 01:50 PM	#1 (permalink)
donkjote PM Newbie Join Date: May 2008 Posts: 4	Z50 in DFW Metroplex, Need Help I have a 1978 Z50 and the engine is making a clattering sound. It runs fine but the noise worries me. Attached is a video with sound. Can anybody tell what this might be? [ame=http://video.google.com/videoplay?docid=737108351965083663&hl=en]1978 Z50 with noisy engine[/ame]

05-08-2008, 04:11 PM	#2 (permalink)
delzy PM Newbie Join Date: May 2008 Posts: 2	Re: Z50 in DFW Metroplex, Need Help I notice that's a '73 tank, and I'm not sure about the side cover. But yes, valve adjustment is in order for your bike.

05-08-2008, 09:15 PM	#3 (permalink)
donkjote PM Newbie Join Date: May 2008 Posts: 4	Re: Z50 in DFW Metroplex, Need Help 1973 model year Thanks. it is a 1973 model. i don't know what i was thinking. it also makes other noises, especially when cold. then as it warms up it stops. i have attached another video. is the sound heard in the video related to the valves? I have never worked on these bikes but would like to learn. Is there anybdy in the DFW metroplex that works on them or can show me a little? [ame=http://video.google.com/videoplay?docid=1142516135158829149]More different noise from troubled Z50[/ame]

05-08-2008, 11:11 PM	#4 (permalink)
FastMC Sporting the Merkin Join Date: Mar 2004 Location: boston area Posts: 5,072 My Mood:	Re: Z50 in DFW Metroplex, Need Help The first clip it just sounds like ticky valves, but in the second clip it sounds like cam chain clatter. I'd pull the cam end cover off and check the cam journal for wear. The cam may have a lot of slop in the head.

05-08-2008, 11:18 PM	#5 (permalink)
slapaho16 3rd Gear Member Join Date: Apr 2006 Location: Fort Worth TX Posts: 5,382 My Mood:	Re: Z50 in DFW Metroplex, Need Help don call me tomorrow names ryan im in arlington during the week and in mesquite on the weekends so ill be around 2147340615 ill get you fixed

05-08-2008, 11:22 PM	#6 (permalink)
slapaho16 3rd Gear Member Join Date: Apr 2006 Location: Fort Worth TX Posts: 5,382 My Mood:	Re: Z50 in DFW Metroplex, Need Help also it sounds to me like a blown head gasket

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