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Old 21-11-2012   #76
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Re: 500F Rebuild

You're not helping.
Thanks RogerNZ thanked for this post
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Old 08-12-2012   #77
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Re: 500F Rebuild

All,

it lives!

Starter motor took over two weeks to repair and I put it in this morning. Motor cranked but would not fire up. Plenty of spark, static timing looked good so I took the carb off had a look, found nothing, put it back and lo and behold it fired up.

Having borrowed a timing light, I used it to adjust the timing. Short of it was the car was OK starting when it when it was 'cool' but after a short drive, it refused to start afer sitting for 10 minutes.

Only way I can get it to start is when I set the static ignition and didn't even think about the timing light. Don't pretend to know what is going on here but I have one theory that I will check tomorrow.

For the moment I don't care. This arvo the car ran, started hot, no oil pressure issues no leaks and nothing fell off. Best of all, strangers smiled and waved as we drove by.

It may be premature but I may have turned a corner here.

Tomorrow I have another look and go from there. I will report back on my progress. Now I can't wait to come across a new 500 on the road so I can terrorise it............


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Regards

Joe R
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Old 08-12-2012   #78
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Re: 500F Rebuild

Excellent news - another road warrior up and going

Now don't go speeding or you'll get a ticket. Come to think of it, if I got a speeding fine in a 500, I'd frame it - they must be quite rare ...

Seriously though, congratulations on a job well done.

Chris
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Old 08-12-2012   #79
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Re: 500F Rebuild

Thanks Chris.
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Old 08-12-2012   #80
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Re: 500F Rebuild

Hi Joe,

Maybe I can help with your hot start issue. In general once the engine is hot you should not add any choke or touch the gas pedal until the engine starts, then blip the throttle a little to keep the engine running once it starts.

Ignition timing and idle mixture will effect how easily it is to start the engine. My stock 500L when cold starts before the engine even makes a full revolution. When hot, it starts within 3 seconds of turning over.

Ignition timing: You need to have the dwell set correctly. If you have an electronic ignition then you can bypass this. If not, I highly recommend that you install one before proceeding. I used the Pertronix system which works great. Points removal should be the first modification anyone does to a 500. Dwell affects timing.

Forget about static advance (10 degrees). You need to set the engine up for maximum dynamic advance. This is 18 degrees. On the pulley locate the TDC mark. Now make another mark 25mm clockwise from that mark. This is 18 degrees BTDC. Loosen the distributor so it can be turned (but not too loose). Install your timing light. Start the engine and rev the engine to at least 3000 rpm. Aim the timing light at the mark on the timing case and turn the distributor until the 18 degree mark you made lines up with the mark on the timing case. Tighten the distributor down and recheck the timing.
Idle Mixture for stock carburetor: If this is too lean or too rich it will also make hot starts difficult. With the timing set first, and the engine running, turn the idle speed down as low as possible, but still with a smooth running. Now turn the idle speed mixture out until there is no increase in engine rpm. Now start turning the mixture screw in in 1/4 turn increments until you just hear a decrease in engine rpm. Now turn the mixture screw out 1/2 turn. Your done.
This should put your engine in a good state of tune and improve starting in general
John
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Old 08-12-2012   #81
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Re: 500F Rebuild

Hi Joe, congratulations on finishing your build and getting back on the road. Looks like a fine job. I am very jealous as I won't be on the road for at least six months - which means a whole summer will pass by with no top down motoring!
Cheers Roger
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Old 08-12-2012   #82
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Re: 500F Rebuild

John,

I am doing what I have always done which is why I am having a hard time working out what is going on. Have not had a chance to look this morning, I will work my way through your note and see how I go. I may decide to leave it for now (given that it was OK yesterday) and just enjoy where I am at.

Electromnic ignition is an option down the track, but again, I have had the std distributor in place for 26 odd years. All things being equal this should perform the job. (but from eveyones reports I would have to agree that an upgrade to the likes of a 123 unit will be of benefit)

Roger,

not finished yet as there are small details to be looked at. I would expect that there will always be a degree of tinkering to be had in the future so I am not sure if I will ever be finished.

Don't be jealous, the photo's are misleading. 7 or 8 out of 10 I think. Use this as incentive (not that you need any given what I can see). As Chris has noted elsewhere, Down under and across the ditch we need to keep waving the flag and gtting these little cars back on the road.


Regards

Joe R
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Old 09-12-2012   #83
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Re: 500F Rebuild

Joe,

A fairly cheap distributor upgrade is to ditch the points and condenser and replace them with a Hall-effect sensor. The rest of the distributor remains standard so you still have to content with the old style mechanical advance though it is usually not a major problem.

Chris
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Old 27-03-2013   #84
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Re: 500F Rebuild

I'm interested in buying a Classical Fiat 500 to restore.

Anybody willing to sale one, even in a bad condition?

Many thanks
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Old 27-04-2013   #85
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Re: 500F Rebuild

I've just put one of those hall effect sensors in place of points and condensor. Easier starting and smoother acceleration. Well worth doing in my opinion. 33 off ebay
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Old 03-05-2013   #86
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Re: 500F Rebuild

I agree!
I had also hot starting problems last summer with my 500F. Correct timing and adjusting the valves+carb settings sorted things out. When I fitted the whole 123 ignition it now starts very easy, just in 1-2s and a small pulling from the starter switch. 228€, worth every penny.
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Old 15-04-2014   #87
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Re: 500F Rebuild

Joe, all this time I hadn't realised you had a whole restoration thread to yourself. A brilliant and entertainingly written Saga. I like the honesty and modesty about it all. Do you still have the car as an everyday runner?
Please show us recent pics and give us an update as it must have settled back in now and be developing a new patina.

thanks for the inspiration.

Peter
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Old 19-11-2014   #88
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Re: 500F Rebuild

Quote Originally Posted by JakeF View Post
I agree!
I had also hot starting problems last summer with my 500F. Correct timing and adjusting the valves+carb settings sorted things out. When I fitted the whole 123 ignition it now starts very easy, just in 1-2s and a small pulling from the starter switch. 228, worth every penny.
Having spent about 30 years making my living as a mechanic, I kind of like setting ignition points once in awhile. It is points and condenser forever for our 1972 500L. It always runs great and I love the fact that it is original!
Bruce
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