Rochester Carby problem
OK so my Rochester is on the 57 Fleetwood not the 64 but I know I can get some feedback here on the problem... Carby went off the car and went for a refurb. Engine would not idle and the idle screw would do nothing. There was no bakelite spacer which I believe feeds the air to the mixture screw but now have installed that. Carby back from refurb on it goes and same deal.. The idle screw does nothing and the engine blows lots of black smoke at idle (too rich I assume).. Any ideas what is wrong with this carby?? I have had an idea to quick swap the carter off the 64 and try it --- would that work? cheers all
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Comment by john chalk on May 18, 2014 at 3:54am
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this is now fixed... took the Rochester 4 jet to a fella I met in the caddy club - aircraft engineer - new his stuff - at the bottom of the accelerator pump there was a small part missing. he made up a replacement and off we went. cold start easy as ....
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ok thanks gents all good info... Russ yes its very minor seepage. will keep on it. Dan it seems finding a good carby rebuilder is just as hard in US as it is in Melbourne!
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thanks Russ thats interesting info. I noticed the difference compared to the carter. Now I have also noticed at the base of the carby some small amount of fuel. This is an indicator that the shafts are worn I assume? It is a pity since its been overhauled but its obvious those shafts were not done. Are they easy to fix and change?
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thanks Russ - when you say leak at the bottom do you mean from worn out shafts or is there some other problem they develop?
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ok pulled carby off. pulled it apart. not good since I just paid for it to be overhauled. blew out the needle and seats. rechecked and adjusted the floats (one side just out). reassembled and reinstalled, changed spark plugs. blew out the shite in the exhaust and engine and it seems to now be OK. I can now adjust the idle with the mixture screws....
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anyone?
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ok thanks Russ... I may need this explained to me of course - a vacuum leak would that not increase idle and lean out the mixture? I understand it may depend where the leak is. Also I was thinking of float level? Does the Rochester 4 jet have any know issues of overfueling or leaking fuel at the base? Any feedback or ideas would help I would like to fix this and show the car off!
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