Re: Another misfire question - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Another misfire question
Posted by Dean [Email] (more from Dean) on Thu, 10 Mar 2005 10:21:29
In Reply to: Another misfire question, Marshall, Thu, 10 Mar 2005 08:38:28
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yes, check the plugs and regap, blow/vac sand from plug well 1st
routine FI cleaner is good practice in any case, Techron Concentrate
check the 4 digit date code on DI sticker when checking plugs
vacuum leaks on T5 systems do not cause problems like this unless the hose to the MAP sensor, FPR or solenoid purge valve are bad.
When on boost, the hoses have positive pressure and leaks would be outward, no inward.
Check for signs of oil leaking out of the (4) DI coils.
Secure DI screws with some loctite blue
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