The Ford Barn

mcgarrett · 04-06-2025, 02:40 PM

I agree with what Synchro said above - I watched an old experienced mechanic do this procedure back in 1969. A customer left an older car with him that ran pretty rough and apparently had a lot of miles on it, The mechanic did a complete tune-up; new points, plugs, condenser, adjusted timing, mixture, etc. and then put a piece of cardboard in front of the radiator and ran the engine until the temp was above the normal driving temp. He then took a Coke bottle and slowly poured water into the carb while holding the throttle open enough to keep the engine from dying. I couldn't believe the amount of carbon and debris that shot out of the tailpipe! After he did the water trick, he removed the cardboard while the engine was still running and let it cool down to normal temperature. I couldn't believe how smoothly that old engine ran!

04-06-2025, 02:40 PM	#3
mcgarrett Senior Member Join Date: Dec 2013 Location: Corsicana, Texas Posts: 1,306	Re: HC head conversion advice I agree with what Synchro said above - I watched an old experienced mechanic do this procedure back in 1969. A customer left an older car with him that ran pretty rough and apparently had a lot of miles on it, The mechanic did a complete tune-up; new points, plugs, condenser, adjusted timing, mixture, etc. and then put a piece of cardboard in front of the radiator and ran the engine until the temp was above the normal driving temp. He then took a Coke bottle and slowly poured water into the carb while holding the throttle open enough to keep the engine from dying. I couldn't believe the amount of carbon and debris that shot out of the tailpipe! After he did the water trick, he removed the cardboard while the engine was still running and let it cool down to normal temperature. I couldn't believe how smoothly that old engine ran!