Hello all,
I'm a newbie here with a '68 124 Sport Coupe that's pretty new to me and is my first Fiat.
I'm having some trouble diagnosing what I think is valve chatter, and I'll bet someone here has a trick or two to share. The car runs great and has less than 2k miles on a refresh of its original 1438 performed in 2016.
The receipts (in Italian) give no detail, but a set of pistons, some of the valves, and 600€ in 'cylinder head reconditioning' are included.
I'll post a video of the ticking in the comments. The message board won't let me post a URL as a newbie.
Using a stethoscope it seems to me like the ticking is coming from the #4 cylinder on the exhaust side. I checked the valve clearances and almost all are right in spec. Oddly one of the few that isn't is the #4 exhaust valve, which was .018" (I would have thought .001" tight would have made it quieter not louder).
I have a shim on the way to get it to .019", but I'm guessing that sure won't make it quieter!
I'm leaving soon on a 3-week road trip in this car, and I'd love to eliminate this variable. What would you experienced TC folks do next?
Thank you VERY much in advance for any advice you may have!
I'm a newbie here with a '68 124 Sport Coupe that's pretty new to me and is my first Fiat.
I'm having some trouble diagnosing what I think is valve chatter, and I'll bet someone here has a trick or two to share. The car runs great and has less than 2k miles on a refresh of its original 1438 performed in 2016.
The receipts (in Italian) give no detail, but a set of pistons, some of the valves, and 600€ in 'cylinder head reconditioning' are included.
I'll post a video of the ticking in the comments. The message board won't let me post a URL as a newbie.
Using a stethoscope it seems to me like the ticking is coming from the #4 cylinder on the exhaust side. I checked the valve clearances and almost all are right in spec. Oddly one of the few that isn't is the #4 exhaust valve, which was .018" (I would have thought .001" tight would have made it quieter not louder).
I have a shim on the way to get it to .019", but I'm guessing that sure won't make it quieter!
I'm leaving soon on a 3-week road trip in this car, and I'd love to eliminate this variable. What would you experienced TC folks do next?
Thank you VERY much in advance for any advice you may have!
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