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Redail · Jun 20, 2007, 08:15 PM

Hi I have a Ford F350 2005 with 40050 Mile ,when a I start it in the mooring engine idle good but ,when start running it vibrate till it reach it Temperature ,But when I trotel up it smoke black all the time when accelerate , I feel I lose power.Let me know what the problem are .Thanks

mikeapple01 · Jul 18, 2007, 10:03 PM

Sounds like the air filter could be clogged, If you haven't changed the air filter or if you drive your truck where there is a lot of dust, try changing the air filter.

TxGreaseMonkey · Jul 18, 2007, 10:22 PM

Black smoke is caused by an over rich mixture and normally occurs whenever the engine is working hard; e.g. going up a steep grade, being loaded heavy, or during heavy acceleration. More black smoke can be observed when the vehicle is operated at higher altitudes, because the air is thinner. A dirty air filter is also another cause of excessive black smoke. If black smoke is noticed while the engine is idling at low altitude, or under normal driving conditions, this condition should be diagnosed ASAP to prevent engine damage.

Redail · Jul 19, 2007, 07:45 PM

Originally Posted by mikeapple01

Sounds like the air filter could be clogged, If you haven't changed the air filter or if you drive your truck where there is a lot of dust, try changing the air filter.

Hi mike I clean the air filter several time ,I change the Map air flow sensor no luke at all ,I am in Island no prof help ,thanks for your anser

Redail · Jul 19, 2007, 07:53 PM

Originally Posted by txgreasemonkey

Black smoke is caused by an over rich mixture and normally occurs whenever the engine is working hard; e.g., going up a steep grade, being loaded heavy, or during heavy acceleration. More black smoke can be observed when the vehicle is operated at higher altitudes, because the air is thinner. A dirty air filter is also another cause of excessive black smoke. If black smoke is noticed while the engine is idling at low altitude, or under normal driving conditions, this condition should be diagnosed ASAP to prevent engine damage.

Hi Tx the truck is not smoking in idle or no load ,only when I start to drive I put a new map air flow sensor ,clean the air filter change fuel ,oil filter every 3000Miles I live in a Island .I had it check by Ford same thing ,let me know .thanks

TxGreaseMonkey · Jul 19, 2007, 07:59 PM

I'm not sure you even have a problem. Your maintenance program is almost overkill.