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WHY LOW BOOST THEN OVERBOOST?

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Old 13 October 2006, 11:00 PM
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SNAP-ON
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Default WHY LOW BOOST THEN OVERBOOST?

Why do i get 0.6psi max one minute then get overboost next minute , then only get 10psi and 8 psi then 17psi ? boost solenoid ?????
Old 13 October 2006, 11:02 PM
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skyline gtr v
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what year is the car
Old 13 October 2006, 11:07 PM
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94 uk wagon
Old 13 October 2006, 11:09 PM
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skyline gtr v
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do you know if the valve is standard?
Old 13 October 2006, 11:11 PM
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yes standard boost solenoid
Old 13 October 2006, 11:13 PM
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skyline gtr v
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try taking it off give it a clean out this sorted mine out
it only takes a few mins
Old 13 October 2006, 11:17 PM
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have done that and cleaned maf and changed all vacumn pipes , checked oil level , changed plugs checked coils all ok
Old 13 October 2006, 11:57 PM
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try changing the valve swap it with a mate see what happens,do you know if it is a 2 way or a 3 valve
Old 16 October 2006, 01:48 PM
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Does the car actually feel like you're getting these sort of boost changes? If not, and boost feels reasonable, check your gauge fitting - make sure you're using "boost" pressure pipework.
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