Had another look at it and i don't think the ball bearing is stuck, tried a good squirt of wd 40 but nothing makes any difference. EMPI
At this stage I would focus on the carb and it sounds to me its still got crud inside, so after soaking overnight, why not take it all apart and clean it up, maybe take it to a garage with an air line and blast it with air. Re the pump, you could remove it and check it pumps ok with a jar of fuel and actuating by hand, and you can leave the pedestal and gaskets in place and withdraw the push rod and check its not worn and correct length. But I would leave the pump until the carb is sorted.
Ok, i'll try carb cleaner overnight, the carb is spotless but if one tiny bit of crap has got in with that ball bearing and it won't come out .... i'll be looking for another carb.
Careful not to make more problems. New fuel pumps can deliver even more pressure than old ones. If the old pump is working, and it isnt dripping petrol out the bottom, stick with it. New pumps also have a habit of stopping working when the pivot pin falls out.. Regarding the acceleration pump, that might be working but there may be a blockage downstream. . Compressed air may be your friend. Certainly on my outboard motor I did all the solvent based cleaning and ultrasonic cleaning but in the end blasting it with 100PSI compressed air worked..after I recovered it when it blew out of my hand.. I would fix the fuel drip first. After all the carburettor was working until a few bits degraded. Sort those and it will be working again. Buy another 34 PICT-3 copy carburettor and it may bring a new set of problems.
Eureka !, cracked it, used a foot pump with red plastic tapered nozzle and that seemed to do the trick, full squirt now. Don't know if i've cured the dripping carb issue yet, just needs oil in engine tomorrow (haven't got enough). Hope it isn't a fuel pump issue because it looks like the alternator would have to be removed to get fuel pump off, top of pump really close to alternator.
Great news, to cut a long story sideways , the engine is back up and running. This has been quite an ordeal and a very sharp learning curve, in fact i think i've been round a 'U- bend' !!. Many thanks to all concerned for helping me through this lot, cheers, Gaz.
Hi Gaz, Did you find a cause for the dribbling acc pump outlet? and was the pump pressure part of the problem. Very interested as I am sure my rebuilt engine is running badly because of over-fuelling.
How do you know your engine is over fuelling? I thought Gaz's problem was crud in the carb which he blasted out with an air jet.
I think the very original problem was a bit of a fuel leak out of the spindle . At the other end of a long train of cause and effect...
Just been out road testing van, all good really especially after re-positioning accelerator squirter correctly. Petrol/ oil mixture that got sucked into the exhaust has finally burnt off, people behind me must have thought i was about to blow up !. I think the initial dripping carb issue was probably just the float valve stuck/ worn out. The engine filling up with fuel was caused by me during the carb re-build, more than likely to do with the accelerator pump non return valve (ball bearing thingy) stuck , only takes a tiny bit of git etc . Running nice now, the only thing that has not totally gone is the slight hesitancy/ dead spot on initial acceleration, this was present even before i recently fitted a proper Bosch 034 dizzy and the carb re-build i've just done. Martinvention, maybe you need to check/set your float valve which controls the fuel level in the carb. p.s. check fuel pump pressure too. checked mine , 2.8 p.s.i. constant at any r.p.m.
