Question about 1997 Chevrolet Blazer

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Start on the engine

My chevy blazer have a trouble shooting with start up the engine; i replace
sparkplugs and they are calibrated, i check the distribuitor cap and rotor and they are ok, i make a text with a spark plug grounded to engine block
and you will see the sparks sendind the electric charge. the fuel pump is ok. this failre happens when i left my blazer without start the engine for one
or two days. when finally the engine turns on you will hear a back fire and
you cant add too much gasoline with the gas pedal because stars to flood
the engine. but after several minutes running in the road my blazer run like new. but today this piece of $#&ht is out of service. i want to know if the problem is caused by a map sensor? p.d. i replace the crankshaft position sensor and its new fresh out of the box. and always happens when i left
the engine one or two days without run

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  • 94 Answers

Either your inlet valves are not fully closing (treat fuel system with redex for a few weeks to remove any carbon build up and allow valves to fully close) or ignition timing is out and needs resetting with a strobe

Posted on Nov 02, 2008

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1 Answer

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swng,
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