Hi everyone,

My 91 chevy blazer seems to sputter once it starts to warm up. I starts up fine and idles fine runs good, but once it warms up to about 100-150 deg., it starts to sputter and sounds like its missing...I changed the spark plugs,cap, and rotor, also put a new fuel filter in. That gave more power but same problem. The distributor is rusty up top i read on another post he replaced that still had some problems. Im not sure if its the distributor or the Intake on the carb, anyone have any ideas. Thanks

 

Have you checked all of the vacuum lines and gaskets in the intake tract for signs of a leak?

 

i havent checked for leaks, ill have to take a look. it seems it could be a number of things to make an engine sputter, nothings simple anymore .