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I strongly recommend the NGK iridium plugs over the Champions. In my Diablo 6.0 (same plug), the NGKs solved a number of poor idle/ignition...
I appreciate that alot of the folks here are following my valve guide problems with some concern, and that it raises questions like the one seen...
I wouldn't sweat the valve guide issues too-much in a 2003 model. Given everything I've found, the latest model year this effects is 2001. You...
My car had 24,000 on the clock when the leaky valves started. A couple of other relevant points FYI: 1) I put about 1500 miles on the car since...
This month's issue of Forza does state that all the 456s suffer from valve seal problems. Given my experience and what we've learned here the...
I don't have a direct answer to this, though the bulletin date in late 2001 suggests that some of the MY2001 cars may be affected. The text in...
I'm not aware of a valve campaign for the 456 nor is Ferrari of Denver. Unfortunately, this is something I have to cover myself. Let's hope it's...
Brian, As always, thanks! I've asked for pictures of the piston and chamber tops for the oiling cylinder; I'll post them here when I get them....
They look pretty good on Silver cars, as well. Here's my old Diablo with yellow calipers. [ATTACH]
Thought I'd include a picture of a cylinder w/o the leak, for comparison. Here it is... [ATTACH]
As promised, I now have pictures of the leaking valve guides. I have little experience in this area, so the experts here can comment on the...
Some news on the original problem that started this thread (crop-duster level of smoking from the 456). FoD got the left head off today. They...
Thanks! I will of course keep others informed as to the problem/solution. I do hope mine is an isolated incident as in-general, the reliability...
Some interesting news on my 456 smoking problem. Nothing on my car, still waiting on head removal at FoDenver. I spent this weekend in Vegas...
I vote to *leave* the For sale posts in this section. I wouldn't think of going to the Ferrari Marketplace to look for Lambos. I've bought a car...
No overheat in the car since I acquired it this summer; I never saw the water temp over 190. The repair records do show a fix for a leaky...
I'm on business travel through next Sunday, and FoD has 1 other car with a deep-diagnostic/repair order. I don't expect they'll have the heads...
My 456 was running very poorly, noticeably down on power, but that isn't the bad part. Over the last few miles before I parked it, the car began...
IMHO, a compression test is about worthless for determing the condition of an engine. Sorry if that's harsh, but I have a *very* good reason....
I asked FoD to take pictures of internals on disassembly for this same reason. I'll post as soon as I have them.