Does an 81 E4ME work ok without AIR pump and lines?
Thread Starter
Intermediate
Joined: Sep 2013
Posts: 33
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Does an 81 E4ME work ok without AIR pump and lines?
About to rebuild my E4ME QuadraJet and just want to make sure I'm not wasting my time. I pulled off the air pump, canister and related vac lines to clean up the engine bay and plugged any open ends. Then I replaced the chip with a Hypertech which turned off my Check Engine light and replaced the base carb gasket and all the plug wires and dist cap which smoothed out the idle. Now she starts perfect, idles almost smoothly and pulls hard at WOT. But she still bogs at partial throttle and surges at cruising throttle and occasionally backfires. I'm guessing she's still running too lean.
I'm sure the rebuild won't hurt but an E4ME can run properly without all the pollution control vac lines, canister and air pump can't it? Or will the computer always be trying to compensate for the pollution equipment removal?
I'm sure the rebuild won't hurt but an E4ME can run properly without all the pollution control vac lines, canister and air pump can't it? Or will the computer always be trying to compensate for the pollution equipment removal?
Last edited by Give'rBuddy; Jun 24, 2014 at 01:19 PM.
Drifting
Joined: Apr 2008
Posts: 1,992
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From: Antioch IL
:agree: I have hooker headers with side pipes so I removed the air pump and kept the rest of the system (including the canister) works fine.
Thread Starter
Intermediate
Joined: Sep 2013
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I kept the canister in the shop but don't really know what it does. Just that it seemed to run better without it. What's its purpose?
Race Director
Joined: Jan 2000
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From: San Jose CA
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About to rebuild my E4ME QuadraJet and just want to make sure I'm not wasting my time. I pulled off the air pump, canister and related vac lines to clean up the engine bay and plugged any open ends. Then I replaced the chip with a Hypertech which turned off my Check Engine light and replaced the base carb gasket and all the plug wires and dist cap which smoothed out the idle. Now she starts perfect, idles almost smoothly and pulls hard at WOT. But she still bogs at partial throttle and surges at cruising throttle and occasionally backfires. I'm guessing she's still running too lean.
I'm sure the rebuild won't hurt but an E4ME can run properly without all the pollution control vac lines, canister and air pump can't it? Or will the computer always be trying to compensate for the pollution equipment removal?
I'm sure the rebuild won't hurt but an E4ME can run properly without all the pollution control vac lines, canister and air pump can't it? Or will the computer always be trying to compensate for the pollution equipment removal?
