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First off, are your running premium gas? If not, try a tank of 91 octane (US measurement) and see if that helps. In my experience, the '88 9000T for some reason is very tolerant of low octane gas, but your car might just be on the hairy edge. Also, you might have a poor tank of gas - it might have said 91, but they stuck in 87 (it happens). Don't worry until you've gone through a couple of tanks of known good gas. Manufacturers vary the formulations with location and season, and that could be affecting you.
Next, check your timing. If the timing is too advanced, you'll be more prone to knock, and boost will be reduced. If the spark plugs are old, they may have developed hot spots that can cause knock.
Posts in this Thread:
- Weak boost levels, Steve Keil, Wed, 31 Jan 2001 23:31:57
- Re: Weak boost levels, Ari
, Thu, 1 Feb 2001 10:36:42 <-- Viewing This Message - Troubleshooting first., Gerhard, Thu, 1 Feb 2001 10:28:47
- Re: Weak boost levels, Matt, Thu, 1 Feb 2001 03:04:06
- Change in quality of gas? (n/m), Jeff Malin, Thu, 1 Feb 2001 00:29:46
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