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Please save my old school K-5 Blazer from the scrap yard.

983 Views 7 Replies 7 Participants Last post by  98Hotrod98
My 84 K-5 is giving me issues. It is barey idling in park or in gear. While in park, it doesn't respond to giving it gas like it should and when I put it in gear, it drives ok for about 20 feet then I have to give it more and more gas to keep it moving. It won't really accelerate at all. With the pedal all the way down on a flat road, I'm going 30 mph and I'm heaing a lot of popping sounds.

I replaced the fuel filter, plugs, cap, rotor, and wires. Fuel pump is fairly new, catalytic converter doesn't seem to be plugged. Is it a carburetor problem??? It was lacking power for about 2 months when climbing hills, but not this bad. Aside from the lacking power, this problem started all of a sudden one night.

The vacuum lines are a mess, but they are the same as they were when it was running good. HELP!!!!!!
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Have someone stand on the gas pedal (in neutral) while you are standing by the exhaust. If there is a restriction the exhaust will sound like it is wheezing. If it is restricted it is not necessarily the cat, some of the older GM stuff used a double wall exhaust pipe. I have seen more than one collapse the liner and it will not show on the outside. It may piss off your neighbors but you can disconnect the pipes at the manifold connection and start it up. If the throttle response returns you are on the search for the restriction.
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