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1995 f-150, 5.0, black soot in tailpipe

Declining power on 170,000 mile, ford truck 5.0 engine. increased black carbon in tailpipe

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That carbon in pipe is more likely to be an engine supplying too much or inefficiently burning the fuel.Do a compression test to determine engine health should be roughly 140psi +for the engine ageYour ignition(plugs/leads etc)may need to be looked at also.While doing compression test you may want to change plugs to non resistor NGK V groove they work extremely well at burning off most extra(within limits)oil deposits caused by wear and tear.May want to try a can/bottle injector cleaner in fuel tank to try and clear up the varnish and deposits left over by time.

Posted on Nov 01, 2008

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ps your 4 thumbs up is appreciated!

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