| Re: Car running funny (Help) |
Subject: Re: Car running funny (Help) by hulagan808 on 2008/6/28 14:30:17 sudden idle problems are (almost) always from unmetered air, weather internal (IAC-egr-intake manifold-MAS-tps-MAP) or external (hoses-intake manifold-exhaust)plugs clean to glazed., a vac gauge and multimeter is cheap and tells alot. ignition problems usually backfire through the intake. exhaust/oil smells like gas, plugs may be wet.timing light and vac gauge tells alot fuel usually either falls flat,pings, retards timing, white, blistered, speckled,or extreme- melted plugs,(lean). (rich) black smoke on acceleration, backfiring through exhaust (esp. on decel) sooty plugs, cat is way hot, poor mileage and bucking. pressure gauge is cheap and tells alot. wide band o2 is not but tells all and getting cheaper all the time, don't forget a dirty, wet or restricted air filter can cause a too rich condition as well. you may only have some of these symptoms but they should fall into a category. take your time and have fun and remember there is no voodoo. if you do a (real) tune up first before you diagnose you will usualy fix the problem. Aloha |
