Re: Engine Noise - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Engine Noise
Posted by Dean [Email] (more from Dean) on Mon, 13 Feb 2006 09:45:36
In Reply to: Engine Noise, Dave, Mon, 13 Feb 2006 09:36:01
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pull the plugs and read the deposits, confirm that plug is BPCR6ES11 and regap or replace
clean injectors with Techron Concentrate, use every 8K or 3x/year
knock or ticking sound? if a slow ticking sound, could be sticking valves or lifters. if a buzzing sound there is trouble with the timing or balance chains.
you can pull the valve cover and inspect timing chain, sprockets and look for sludge, while retorquing the head bolts
does the low oil pressure warning light come on before cranking the engine? if not, the oil pressure switch needs to be replaced
you should change the serpentine belt and upper idler pully now if orignal... which I expect
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