Thread: Running on

a carbonising in the combustion chamber will do it.. so will a metal hot spot or burr..

fortunately usually the first place to get carboning is the plugs if theyre badly carboned ( and your sure all other tuning aspects are correct) clean the plugs and run them again, If you get carboning starting within say 1000km or 10-12 hours change to a hotter plug.

If immediately after putting in the cleaned (or new) plugs the problem still develops try the water trick.. It works for early stages but may not work if the carboning is serious.

Id do it a little differntly than previously mentioned by a, making sure I was in a clean dust free environment with the engine warmed up and b, using a hairdressers style sprizting bottle spray it into the inlet side of businsess at high idle -1500rpm max..

If your really concerend about it mixing about 30/70 metho/water (shake well) will help the water "evaoportate" in the manifold but wont be as effective at decarboning the engine.

Go to subaru and get a can of their "Upper Engine Cleaner" Works wonders, and i tell you what you should have seen the amount of rubbish that came out the back of the 69" Bentley, ran really well after that, as have many othe cars ive used it on, i think it is about $25-30bux for a can. You should only need one. You take a vacuum line off AFTER the carby, and use the nozle it comes with and squirt it in there. Rear the instructions and its easy. and dotn forget to suck it through otherwase you may have a hard time starting it if you dont do it right, but i swear by it.

Originally Posted by MacMan

My old Fiat 124 used to run on if you turned it off at idle. The simplest way to stop when you wanted to was to park, rev it with a short sharp stab of the pedal and kill it just before lifting your foot. It would just spin down normally. Never really bothered trying to fix the problem once I worked that out.

My old 124 used to do this every now and then. The pedal stab used to work sometimes, but other times I'd have to be nasty to the engine and stall it in gear. Bloody high CR in those engines - never bothered fitting an extra head gasket to drop the CR.

My old 124 used to do this every now and then. The pedal stab used to work sometimes, but other times I'd have to be nasty to the engine and stall it in gear. Bloody high CR in those engines - never bothered fitting an extra head gasket to drop the CR.

Nice to see there's another idiot out there who had one. It was my first car, and the one I most loved to hate. Great fun, but full of heartache. I miss mine terribly, but then days like today on a motorcycle make up for it.