retading timing should stop knock, but you will... - Saab 900 Bulletin Board - Saabnet.com
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retading timing should stop knock, but you will...
Posted by JohnK (more from JohnK) on Sat, 12 Apr 2008 09:48:04
In Reply to: trying to figure out, fueling issue or engine issue?, drupchen, Fri, 11 Apr 2008 16:29:15
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notice a huge loss of power when not boosting. Check your timing retard on the distributor. blow/suck on the hose it should hold pressure. If leaking replace. The next check is to make sure the arm moves when pressure and vacuum is applied. You can bend the stop to allow a tad more retard.
Why isn't your knock sensor cutting the boost back to base? Might be shot.
Is your base boost set at about 6psi?
Assume the wastegate is good since new turbos, but make sure the gate moves freely and the controller works...should hold pressure.
Check out APC solenoid, numerous posts on this.
hope you didn't tweak the K potentiometer on the APC box by mistake.
finally there is a chance that your main ECU is bad, but not common.
posted by 69.249.52...
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