He may have a failing pre-pump - Saab 900 Bulletin Board - Saabnet.com
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He may have a failing pre-pump
Posted by Chaz [Email] (more from Chaz) on Mon, 14 May 2007 07:18:28
In Reply to: Re: She Only Likes Premium Fuel, CMyles
[Profile/Gallery]
, Mon, 14 May 2007 07:04:29
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This may not be an octane problem but a volume in the gas tank problem.
If the pre-pump is failing you need a higher volume of gasoline in the tank to help the pump work. The added 3 gallons might have more to do with increasing the fluid column pressure and less to do with the octane grade.
Just a thought.
Saabs boost better with higher octane, but they run just fine with lower grades due to the knock sensor. You will lose out on zip, but you will not do damage.
I think higher octane is not a bad idea on any turbo, but I wonder if that is the real culprit here.
My musings. Others may have other ideas.
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