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sorry i havent been on here lately been busy working and in the process of moving but i havent forgotten about everyone on here. unfortunately i was tracking down one problem and discovered another bigger problem. my truck has a habit of fouling out the spark plug on the #1 cylinder. that said i was driving home last week and noticed my truck started missing and carrying on and losing power especially when going uphill. i figured no problem ill jus pull and clean the #1 plug and all will be well. however, when i pulled the plug i noticed it wasnt fouled out. carbon buildup is a problem on this cylinder. as i was re-installing the plug i noticed that that the exhaust was old and grey looking all except the #1 cylinder which has some oil on it and so i decided ok i will just simply let the truck run for a bit and it will burn off but when i got home i looked to see if the oil burned off and it didnt. so i pulled the plug and checked it for spark. has spark so plug and wire and dist connection are all good. then pulled the valve cover off and chedcked the rockers and studs to make sure they were in tact. they were. so i then cranked the engine to check to make sure the valves were opening and closing which again they were. so i pulled the plug again to see if i could see into the cylinder bore to see how everything looked there but i couldnt see anything so i put everything back together and decided to start the truck and let it run for about 10 mins to do my own "test" just to confirm my suspicions and grabbed a bottle of power steering fluid and dipped my finger into the bottle and dropped a few drops onto the 2nd exhaust port and as suspected instant smoke for about 10 seconds until all of the fluid burned off. then repeated this with the 1st cylinder exhaust port and the power steering fluid simply heated up enough to run down the exhaust manifold at a nice speed and then start to smoke once it hit the "hot" part of the manifold. so i kno i have air,fuel,spark,and atleast some kind of compression but nothing on the exhaust side. can carbon build up "clog" the exhaust port and cause a dead cylinder or should i look into something else?? i dont want to pull the head unless i absolutely have to because of my finantial situation i cant afford to replace all the gaskets required to remove the head. also i notice a spitting sound(i thought it was a valve tapping but the more i actually listened to it the more i realised that its a compression leak im assuming on the intake side so that the gases can escape. like i said to pull the head to look at the valves i will because im pretty the main causes for a dead cylinder would be a cracked piston,cracked,chipped,bent,or broken valve. this can be checked with a compression test but i cant do that until next week. so i bring up my main question of can carbon build up cause this condition?? if not what should i look into next. thaks guys and sorry this is so long ive been running myself into the ground lately and am very tired(laughing) but any and all thoughts,pointers,opinions,or anything else is greatly appreciated. thanks in advance,bill