Weber idle jets keep clogging

[neilbardsley]

After changing all hoses, filters and cleaning the carburettors the idle jets have clogged again. Angus very sensibly suggested checking the fuel tank which I hadn't before because Andrew had reconditioned. Can't see anything wrong here it all looks clean to me. I kind of wish it had been the issue. Anyone, else see anything that worries them.

Back to refreshing the fuel with e5 and adding a second filter

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[Nine One One]

I would put a filter in, as close as possible to the tank outlet. There is nothing to say having changed the fuel lines, there was crud still left in the metal lines, that hopefully you blew through with a pressure line? Short or getting a camera lens inside the tank, no-one can tell if there is crud further inside the tank on the outer extremities.
The only way to be sure is clean the hole system through with an air line and start again.

[Bruce M]

The weber idle circuit has some design flaws apparently. The air intake on the carb top is one & i think you fitted the extension tubes that help.

I did see a series of videos on YouTube where a guy modified his webers until he resolved the problem but I don’t think he did a final video to summarise the fix that actually sorted it. He did drill through some of the internal passages though. Something to do with pulling the idle jet fuel from the side of the float bowl instead of the base where the dirt particles collect was one modification.

[neilbardsley]

I had the Jet Doctors on for a while and just removed recently. I'm not sure they made a difference as the car clogged up again when I removed them.

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[neilbardsley]

I would put a filter in, as close as possible to the tank outlet. There is nothing to say having changed the fuel lines, there was crud still left in the metal lines, that hopefully you blew through with a pressure line? Short or getting a camera lens inside the tank, no-one can tell if there is crud further inside the tank on the outer extremities.
The only way to be sure is clean the hole system through with an air line and start again.

Good point. There is a filter directly after the tank but I didn't blow through with an air hose. Might honestly be quicker just to change the tank.

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