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ENGINE TROUBLE MAJOR HELP NEEDED PLEASE

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Old 14 February 2009, 11:52 AM
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Mitch WRX
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Question ENGINE TROUBLE MAJOR HELP NEEDED PLEASE
Ok i posted a thread re my sti v3 misbehavin,she is hunting on idle an a bit rough up to 50mph,from 50mph she is hesitating/tryin to cut out,it aint the maf sensor,it aint any of the sensors an it aint the fuel pump nor the idle control valve HOWEVER this is a tricky one,pressure through the manifold is VERY low,supposed to be anywhere within 18-22" mine is coming in at 6",any ideas??? fuel is 1/2 bar high but thats ok,she is runnin 3 litres of fuel per minute,she is currently doin my head in,is there anyone out there that has come across this at all,please please i want my baby back,any help any ideas!!!!!!!!!!!
everthin else is runnin as it should be.....
MITCH

PLASE EMAIL ME PRIVATLEY
mitchcoxqualters@aol.com
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Old 14 February 2009, 04:04 PM
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merlin24
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A healthy engine should have approx. -17.5 " of vac - are you sure you havent got an air leak on the inlet manifold eg vac hose perished/split or brake servo hose connection leaking ??

Mick
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Old 14 February 2009, 04:19 PM
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99greenwagon
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i know it sounds a bit silly but it could be ur spark plugs.
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Old 14 February 2009, 04:40 PM
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wessie# 112
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ur sure ur blow off valve aint leaking
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Old 15 February 2009, 12:22 PM
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djsparra
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Check the gaps on ur plugs?
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Old 15 February 2009, 12:26 PM
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TonyBurns
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Last serviced? (plugs etc?)
O2 sensor
Lambda sensor
(its a big list, if in doubt, go to a garage )

Tony
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Old 16 February 2009, 07:25 PM
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Matt578
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If your manifold vacume is not correct on tick over you have a vacume leak im affraid. Get checking those hoses
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