The Ford Barn

smurph · 10-14-2019, 10:21 AM

My 1929 engine has developed a disturbing noise which I can best describe as a rattle, or a Â“clack, clack, clackÂ” (not a clank). The noise usually does not occur at idle, but appears once revs increase (maybe 1500 rpm) and then will usually , but not always, stop as rpmÂ’s increase above 2000(?).
When driving under load there is usually no noise, but when I take my foot off the accelerator the Â“clack, clack, clackÂ” frequently appears.
I think the problem may be coming from cylinder #2 because when I short out the plugs one by one, I get the expected decrease in revs from #Â’s 1,
3, and 4 but in addition I hear a definite but more subdued rattle or chatter or clack coming from #2.
Any thoughts about whatÂ’s going on would be much appreciated.
Thanks,
smurph

10-14-2019, 10:21 AM	#1
smurph Senior Member Join Date: May 2010 Location: Cold Spring Harbor, NY Posts: 102	Engine Noise My 1929 engine has developed a disturbing noise which I can best describe as a rattle, or a Â“clack, clack, clackÂ” (not a clank). The noise usually does not occur at idle, but appears once revs increase (maybe 1500 rpm) and then will usually , but not always, stop as rpmÂ’s increase above 2000(?). When driving under load there is usually no noise, but when I take my foot off the accelerator the Â“clack, clack, clackÂ” frequently appears. I think the problem may be coming from cylinder #2 because when I short out the plugs one by one, I get the expected decrease in revs from #Â’s 1, 3, and 4 but in addition I hear a definite but more subdued rattle or chatter or clack coming from #2. Any thoughts about whatÂ’s going on would be much appreciated. Thanks, smurph