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Re: High idle

Posted: 06 Sep 2007, 15:13
by Sam Danenberger IV
Hello All-
Thanks to you(all) for the informative and ammusing discussion.
I will report the cure when found.
I agree with Ed,
its' probably linkage or cable related, maybe friction on the rubber mounting as Shaun describes.
I'll hopefully find out this weekend when I have time to work on her.
Thanks again.
Sam

Re: High idle

Posted: 06 Sep 2007, 20:10
by jogo48
what is a dremel ? I assume a tool & not a zebra !

Re: High idle

Posted: 06 Sep 2007, 20:14
by jogo48
ha ha ha, that is really ferry vuny. Not so hi-falutin, but ferry vuny. I probably will not have an opportunity in this life to 'build this into a conversation asi it was my own invention', which is probably OK,

High idle

Posted: 06 Sep 2007, 20:21
by jogo48
twonders of google ! I now know a lot more about a dremel, when&where it was invented & by whom etc

Re: High idle

Posted: 07 Sep 2007, 19:25
by John Simister
Not a synchronisation problem unfortunately. The idle is smooth, stable and consistent. Just too fast.

A carb rebuild seems the only answer. It would be good if a trusted carb rebuilder or Fulvia specialist could offer exchange rebuilt 42 DDHFs but I suspect the sales volumes would be so low as to make it unviable to hold rebuilt carbs in stock.

I've just done the Tour Britannia in my HF. High idle apart, it was fantastic. The Fulvia behaves like no other front-wheel drive car I've driven: keep the power on, whatever the bend, and that front just latches on and pulls you through. Amazing bite, amazing traction, no torque steer. Brilliant.

John

Re: High idle

Posted: 07 Sep 2007, 19:47
by Peter Cripps
Coming late to this thread ....

Just wondering if you've checked timing under low idle and high idle conditions? The reason I ask is because my Fulvia had a similar problem; as the engine warmed up, all off a sudden the idle speed increased substantially. After checking carbs, linkage, etc., etc., I decided to see what the timing was doing, and, sure enough, there was a significant shift in timing just when the sudden speed up occurred.

The problem seemed to be caused by excessive end play in the distributor drive. Not exactly sure why this would cause the timing to shift, but after re-shimming the distributor shaft the problem went away. I also cleaned the advance mechanism and lubricated everything at the same time.

Might be worth checking to see if there is significant timing shift in your case.

Peter

Re: High idle

Posted: 07 Sep 2007, 20:56
by Shaun Pond
John Simister wrote:

>
> I've just done the Tour Britannia in my HF. High idle apart,
> it was fantastic. The Fulvia behaves like no other
> front-wheel drive car I've driven: keep the power on,
> whatever the bend, and that front just latches on and pulls
> you through. Amazing bite, amazing traction, no torque steer.
> Brilliant.
>
It looks like there are a couple of pictures of you and your HF up on the Tour Brittannia site:

http://www.tourbritannia.com/catlist.aspx?CatID=81

Looks like it was fun!

Re: High idle

Posted: 08 Sep 2007, 05:07
by Randy Adams
My recommendation: follow Huib's and Shaun's hints first. Check to see that there is some actual empty space between the throttle lever and the top edge of the one-piece carburetor mount. These two parts should not be making contact at all. I remember having to file out about one-eighth of an inch to get proper clearance.

You didn't do anything with the air cleaner, did you? You are running a standard one, correct? I've found cars pick up at least 100 rpm when you pull the air cleaner off and some even more. A non-standard unit would require rejetting the carburetors. Please accept my apology if this reads like an insulting question; that's not my intention.

The worn distributor idea is interesting. Usually if the ignition is racing because of being over-advanced the engine will have a nervous almost galloping feel to it; it will not be smooth. If you have something like that going on, you can certainly loosen the distributor while the car is idling too fast and slowly retard it and see what happens.

I always found the Fulvia to be unusually responsive to trial and error adjustments.

Re: High idle

Posted: 11 Sep 2007, 23:29
by Huib
Now that you mention the air filter, the support of the air filter box should be firmly fastened on both ends. If not so, movement of the airfilterbox may affect idle

Re: High idle

Posted: 12 Sep 2007, 15:37
by Sam Danenberger IV
Hello All-
Problem solved we think, at Autosprint Ltd.
Carb Synchro was off slightly and the idle was ever so slightly adjusted.
Now purrs as it idles at 800-1000 rpm, but I have yet to test this fix under 90 degree + F conditions.
Off this weekend to Elkhart Lake for the Vintage Race Festival.
Car was invited to the "Gathering on the Green" at the Osthoff Resort.
Upholding/representing the Lancia marque, a joy and an honor.
Ciao!
Sam

ps as I drove home yesterday I found I had no headlights!!! Argh.