Had a diagnostic ran ,they said tune up, did not quite agree ,2001 chevy blazer 54,000 miles ,had 100,oo plugs ,but did it ,no change,so now they say inj.cleaning and fuel filter, i am very limited on funds have been out of work for 8 mos. due to 2 surgeries and med. problems,cash is a big issue need help please!

 

is their a check engine light? if no, then i would suspect a sticking popet valve in the injector spider. a injector should help if thats the problem.

 

there is an engine light is says #4 cylinder misfire

 

check the dist an rotor button the get burnt and cause miss fires and no starts 4.3l are bad for this problem