1995 blazer 4wd

[Nspencer2010]

I have a 1995 blazer that i have cently bought .. i installed new plugs ..passenger side valves was bad smells like gas and carbon ...i belive it has 178k miles ...the problem i have is its been idling rough and whem i drive it and give it gas the motor cuts out and backfires sometimes ..but always boggs down i lift from the gas and it picks back up ..i can come to a stop and sometimes it dies ...and other times i can hit the gas and it will take right off like there is nothing wrong ..that only happens every so often ....please help ...its our only transportaion for me and my wife and kids ...i dont know where to begain

[old_master]

Make sure the fuel filter is not restricted, then check fuel pressure and leakdown. Key ON, engine OFF, fuel pump running: Pressure must be 58psi to 64psi and must remain above 53psi for 3 to 5 minutes after the fuel pump shuts off.

[jeepkiller]

isnt it 60psi to 66 psi for a s10_blazer? sorry for butting in i had the same problem so i sold mine< but im thinking of buying another very soon n_____n' get a cpu diagnostic so you could know about any sensor malfunctions... and dont sell your beautiful car like i did... fix it! (:

[Jerry80871852]

Originally Posted by jeepkiller

isnt it 60psi to 66 psi for a s10_blazer? sorry for butting in i had the same problem so i sold mine< but im thinking of buying another very soon n_____n' get a cpu diagnostic so you could know about any sensor malfunctions... and dont sell your beautiful car like i did... fix it! (:

Depends on year model. Mine is a 92 W engine, its fuel pressure is 55 to 60, yet later models are a bit higher.

[jeepkiller]

Hmmm mine was a 94 approximately 58-64psi for 1995 ; at idle pressure should drop 3-10psi for a CMFI vin"W" engine . I was off a bit hehe. make sure you get the cpu diagnostic im no mechanic but I believe this might be a MAF,MAP or o2 sensor problem as symptoms such as those stated have been commonly produced by such sensors... is your SES light on?