Classic fiat 500L weber 26 carb rebuild

[daemonoid]

I've rebuilt the carb on my 500L, after only a minor problem with the throttle linkage (I put it on the wrong way round meaning it revved like mad) it all seems to be just about working.

My problem though is trying to set it perfectly - the Haynes manual suggests tightening the needle valve to produce the fastest, smoothest idle. Which I have done and then altered the throttle stop to slow it down a little. The problem is, that the needle valve is as tight as it will go which doesn't seem right to me. I've then played around with both the throttle and needle valve to get a smooth idle without it being so tight, but then I seem to lose power at full throttle (too little fuel I guess).

Anyone got any advice on how to get this tuned correctly? Any hints & tips would be appreciated...

[rijmij99]

i had the same problem with the dellortos on my 75. try running the engine up to temp and then have a fiddle. it took me many afternoons with a flat head and a brick to rest on the throttle. its that or pay someone to do it properly i'm afraid

[daemonoid]

Thanks, after a bit of tweaking I seem to have a fair balance now. I do think the fuel pump is on it's last legs so electric one next.

The top end seems a little better after a moving Italian tune (revved the nuts of it on the motorway on the way to ikea). I'll post a. Comedy pic later - the car was smaller than the shopping trolley!

[rijmij99]

some times cars need a good thrashing just to shake the years off. my 164 was the same when i got it, 3rd gear up the m2 and back and it was running smooth as silk