Re: Oddest problem - intermittent bouts of running *rough* - Saab 900 Bulletin Board - Saabnet.com
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Re: Oddest problem - intermittent bouts of running *rough*
Posted by Simon S (more from Simon S) on Fri, 26 Dec 2003 15:04:03
In Reply to: Oddest problem - intermittent bouts of running *rough*, Dan Schleifer, Fri, 26 Dec 2003 06:46:43
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I doubt it's boost control, that couldn't cause boost levels below base-boost without other hardware failures. The boost hiccups are probably caused by misfire: no combustion makes for no exhaust pressure for the turbo. Since your plugs aren't particularly old, how about everything else? Ted's thought of it being a boost-timing issue may be right on. You do say you're running 30# and a 3 bar FPR. I think that's way too much gas at low-end, and that may be a cause of a misfire, try the old 2.5 bar FPR, especially if your plugs are fouled. btw, what plugs do you use? under what conditions is water injected?
posted by 148.78.24...
Posts in this Thread:
- Oddest problem - intermittent bouts of running *rough*, Dan Schleifer, Fri, 26 Dec 2003 06:46:43
- Re: Oddest problem - intermittent bouts of running *rough*, SDP, Sat, 27 Dec 2003 07:39:06
- Re: Oddest problem - intermittent bouts of running *rough*, Simon S, Fri, 26 Dec 2003 15:04:03 <-- Viewing This Message
- Check this out..., Ted, Fri, 26 Dec 2003 13:27:22
- When was the last time you looked at your plugs? nm, Simon S, Fri, 26 Dec 2003 12:13:40
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