hey
i was inspecting me engine and noticed it's fairly sooty from the intake manifolds, pistons and all the spark plugs. (it's 8yrs old)
sometimes from cold starts i noticed it misfires initially when i hold the rev for few secs (like as though 1 cylinder is skippin) but runs ok after warming up.
i suspect it's running too rich so i cleaned up the Throttle Body, O2 sensor & plugs, ran the engine afew minutes, then re-check the plugs and they have a light layer of black soot. also noticed after overhaulin the TB, from all the crusty dirt, that it idles a little faster (1100rpm min) than before (500-600rpm)
anyone know what could be causing it?
i'm thinkin its might be:
-worn plugs? not sparking proply so unburnt residue builds up
-worn O2 sensor telling injectors to run rich?
i was inspecting me engine and noticed it's fairly sooty from the intake manifolds, pistons and all the spark plugs. (it's 8yrs old)
sometimes from cold starts i noticed it misfires initially when i hold the rev for few secs (like as though 1 cylinder is skippin) but runs ok after warming up.
i suspect it's running too rich so i cleaned up the Throttle Body, O2 sensor & plugs, ran the engine afew minutes, then re-check the plugs and they have a light layer of black soot. also noticed after overhaulin the TB, from all the crusty dirt, that it idles a little faster (1100rpm min) than before (500-600rpm)
anyone know what could be causing it?
i'm thinkin its might be:
-worn plugs? not sparking proply so unburnt residue builds up
-worn O2 sensor telling injectors to run rich?
