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I need help!!

I'm after some wisdom from all you old holden fella's out there. I have a HD 179 thats running rough and stalling when I take my foot off the accelerator. I have changed the points, plugs, leads, new distributer cap, new recon carbie, new rotor button, I've adjusted the idle speed and the fuel mixture. There doesn't seem to be any manifold leaks but I'm not 100% on that. About 8.5 years ago my father and I pulled the motor out and replaced one piston that had a busted ring. I put another 179 piston in and every thing seemed fine. About 1 year after that I gave the car to my father who put it neatly in his shed and never started it again. Earlier this year he got flooded out and so did the car - up to the tops of the seats. I sent the car to a mechanic who got it running and put all new brakes on as the old ones were shot and had to car sent down to me. So therefore the car has done little to no mileage after the new piston was put in.
I'm stumped as to what it could be. Could it be another piston issue? It runs quite rough but when I put my foot down she's off like a rocket and runs smooth, as soon as my foot comes off she's rough and stalls. Any advice would be really appreciated. I'm in the process of stripping the car back and starting again so I'd like to do whatever I can myself to save on $$$$!
Thanks in advance!

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Comments

you need to be 100% that there are no vacuum leaks. confirm this first.

how did the points look - did you change the condensor? (unlikely problem) any chance the dissy advance weights are seized from the floodwater and there is no mechanical advance?? (unlikely - would make it gutless on road, more so than a poor idle)

is the carby the correct one from the engine, with correct jetting? possible just an idle tube blockage or wrong size?? (quite likely)

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The carby I got from Xtreme Fuel Solutions and it's the right one for the motor. Is the idle tube in the carby or one of the tubes going to it? The larger of the two tubes does have a slight twist in it, right where it screws into the carby. Someone did mention the dizzy, would I be best to replace it altogether? Also how did I best check for vaccum leakages?
Cheers

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You'll need to post some photo's of the twist, carby and engine mate...make it easier for our professors to diagnose :)

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Cheers,

Emu

O.H.T.C. original member

Hi again. Just thinking I might need to pull it all apart and check the pistons. It seems to be getting worse every time I start it. If it needs boring should I do that and make it a 186 or should I just pull the whole thing out and put something else in like a 202? I'm not sure what to do. I wanted to keep it original but if it needs boring i may as well change it over to something really good. Thought?

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