Engine not getting fuel - Alfa Romeo Bulletin Board & Forums

 
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post #1 of 8 (permalink) Old 02-26-2017, 10:32 AM Thread Starter
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Engine not getting fuel

So, after over a year of sitting, I have put everything in the engine compartment back together. Reinstalled Weber carbs. Car wants to start with starting fluid, but ALL plugs stay bone dry when trying to start. Fuel pump works, I get fuel to the carbs, but nothing to the cylinders. None of them. Could all jets be plugged/gummed up at the same time? Am I missing something? Time to rebuild the carbs? How difficult is that? Sorry, a lot of questions, but any and all input is appreciated!!

Peter

Currently: '65 Giulia TI

Previously:
'76 Alfasud Ti/'75 GT Junior/'87 Alfa 33
'91 Alfa 75/'95 Alfa 164/'79 Alfa Spider '69 Euro 1750 GTV, '67 Duetto, '84 Spider Veloce
'91 164L
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post #2 of 8 (permalink) Old 02-26-2017, 08:52 PM
Richard Jemison
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Carb issue

Pull the idle jets and accelerator jet squirters,

Idle jets often clog up, as do the squirters as holes are very small.

With the squirters out opening the throttle should pump fuel out of the access hole. If not carbs need full and complete rebuild.

I suggest Gordon Raymond.

Richard Jemison
RJR Racing

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post #3 of 8 (permalink) Old 02-26-2017, 09:01 PM
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It might be as simple as a stuck check ball for the accelerator pump.

There's a great thread here with info on the accelerator pump circuit:
Accelerator Pump Circuit

Even if other stuff is clogged you can usually at least get the car to start if the accelerator jets are squirting fuel when you hit the throttle. A mirror looking down each throat while someone pumps the gas will show you which squirters aren't squirting.

Jason Arrington
1989 Spider driver
1974 Spider restoration project

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post #4 of 8 (permalink) Old 02-27-2017, 06:28 AM Thread Starter
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Thanks for the suggestions! Can anyone share a visual of where the idle jets and accelerator jet squirters are located? Sorry, never worked on carbs before. tried to find a picture, but maybe nomenclature varies because I can't seem to find anything useful.

Peter

Currently: '65 Giulia TI

Previously:
'76 Alfasud Ti/'75 GT Junior/'87 Alfa 33
'91 Alfa 75/'95 Alfa 164/'79 Alfa Spider '69 Euro 1750 GTV, '67 Duetto, '84 Spider Veloce
'91 164L
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post #5 of 8 (permalink) Old 02-27-2017, 07:45 AM
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Webers? Here's a diagram from Centerline's site. https://centerlinealfa.com/sites/cen...weber_info.pdf
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post #6 of 8 (permalink) Old 02-27-2017, 07:47 AM
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you should have this : Alfa Romeo Giulia 1750, 2000 1962-1978 Owners Workshop Manual: 2000 by Autobooks 1588500373 | eBay

I have no affiliation with the seller, but recommend this book, it has all the info you need to overhaul your TI including the carb info.

current:
83 Spider Veloce
ex:
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post #7 of 8 (permalink) Old 02-27-2017, 08:40 AM
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Check out the diagram in post 7 of the thread I linked to. There's a larger and a smaller screw on each side - the accelerator jet itself is under the large screw and the weight and check ball is under the smaller screw. Before performing any major surgery or even removing the carbs I'd remove and clean the jets, check ball, and weight then use some carb cleaner and a straw to clean out any gunk from the passageways (in yellow on Gordon's diagram).

If everything is clear you should be able to pump the throttle and see fuel squirting up through the open screw holes. Reinstall everything and hopefully you should now see the accelerator jets squirting into each carb throat when you pump the throttle.

Jason Arrington
1989 Spider driver
1974 Spider restoration project
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post #8 of 8 (permalink) Old 03-05-2017, 11:45 AM Thread Starter
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I also talked to my local club members at our monthly meeting, and I ended up taking out and cleaning the jets, and basically cleaning everything that I could. Managed to get her started!! She even idles pretty well now, throttle response is not great yet though. Fuel is very old though. I'm going to run some sea foam through the system, and put in fresh gas. Looks like we'll get this sorted. Thanks for all your input...learned something new!

Peter

Currently: '65 Giulia TI

Previously:
'76 Alfasud Ti/'75 GT Junior/'87 Alfa 33
'91 Alfa 75/'95 Alfa 164/'79 Alfa Spider '69 Euro 1750 GTV, '67 Duetto, '84 Spider Veloce
'91 164L
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