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Re: several driveability troubleshooting questions
Posted by Todd 83-900T (more from Todd 83-900T) on Mon, 11 Feb 2002 10:48:01
In Reply to: several driveability troubleshooting questions, Chris Cottini, Sun, 10 Feb 2002 01:25:00
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Chris,
Let me see if I have understand what you've done so far. You've changed the filters, cleaned the injectors, replaced the distributor cap and rotor, tweaked the apc system, and adjusted the wastegate all to straighten out a driveability issue.
If it was me I'd set the apc and wastegate back to factory specs and look at some of the fundamentals. I'd start off by looking for vacuum/boost leaks at the ignition advance diaphram, the boost pressure kill switch, checkvalve on the vacuum reservoir, at the injectors, turbo couplers, evaporative canister, all the nipples...etc I'd spend at least an hour with a vacuum pump and a half bottle of your favar flammable liquid looking for these little devils. Vacuum/boost leaks are the bane of the CIS system. If you don't have any leaks then I'd do a injector spray pattern test and leakage test. Have you check the Lambda duty cycle?
Next I'd move on to the ignition system and replace the plugs with what's specified in the owners manual and check the wires? If they aren't bougicord or magnicor I'd replace them. The heat from the turbo is really hard on wires. If you're breaking caps and rotors you're putting them on wrong. What's the timing set at? Have you tested to make the vacuum/mechanical advance is working correctly
Only after you get it running right without boost should you start tweaking the apc or wastegate.
Todd
posted by 128.110....
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