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Old 08-06-2014, 04:39 PM   #1
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Location: Melville NY
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986 Vaccuum Leak Help Please !

OK.... I did a smoke down test on my 98 2.5 Boxster. She is running super rough and previously I changed all the plugs, coils and O2 sensors. I bought a new Maf, cleaned the throttle body and associated solenoids. Smoke is leaking from the insulated oil filler tube, got that.
Should I assume the air oil seperator needs replacing? I cannot get the cars idle running long enough alone to test with the oil cap suction.
I also have a leak coming from the body of the valve circled in this picture. Does anybody have a name and or part number? I think it is a PVC valve but I cannot identify it anywhere in my books or service manual. thanks, Lee

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Old 08-06-2014, 05:14 PM   #2
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The counter part to the AOS canister that remove crankcase air emissions from the 4-5-6 head 99610704751 Connector piece

It has an O-ring that seals the tube to the head (99970715440) and another o-ring that seals the crossover hose the connector (99970744640).
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust

Last edited by jsceash; 08-06-2014 at 05:25 PM.
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Old 08-06-2014, 05:30 PM   #3
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Cracked Vent Tube

Great! So if I can get to this vent behind the drivers side back seat cover, I just pull it out to replace it?
I guess the AOS, oil tube and vent all need to go. Mucho gracias !
E bay cable clamp wrench on the way !

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