Ok well I spoke to my dad the other day and it turns out he DID NOT take the carbs apart, just soaked them in carb cleaner and gave em' a good outside clean - this was because he couldn't get into them due to some screws being threaded. Nevermind.
Anyway he gave me the same tip as interfuse did - pour a few drops of petrol into each carb and then try and fire it up. 1st I did this with the old plugs in, it gave a few promising coughs, then 5 seconds later a almighty BOOMing backfire that startled some people passing by!
After doing this twice I decided to change the plugs to the new ones I had bought and did the same thing again. Success! - After a few coughs it then promptly revved up to about 8K then cut out (bear in mnd this was when the fuel tank was not attached). I repeated this serveral times with the same result and feeling confident put the fuel tank back on. No luck however, just spluttered a few times (prob the remenants of the fuel I poured in) then did nothing. I then poured some more fuel into each carb (this time with the fuel tank properly attached, fuel hose, vacuum hose, primed the carbs ect) and it revved up again to about 8K before cutting out.
Thinking that by putting my hand over each carb and then trying the ignition may clear out some passages, but nothing really happened. I did feel suction in all 4 carbs, but some were stronger than others. Carb 1# suction felt quite weak compared to carb 3# which was much stronger and it almost sounded as it wanted to start!
Would it be fair to come to the conclusion that the carbs are clogged up somehow (yes I know that many of you wise people suggested that straight away, but I thought my dad had taken the carbs apart properly and cleaned them!). Should I just bite the bullet and get them professionally cleaned and synced?
Its a wieght off my mind that I have isolated the problem to the carbs, its now just a case of getting them working properly!
