Low boost all of a sudden.

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Nov 25, 2001 | 02:15 AM

Dan Putnam

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From: Washington State

Low boost all of a sudden.

1993 FD3S R1, Single Turbo
Was running around 18-21 psi, now I'm only getting 13. I have NO OTHER SIGNS of any problems, boost just stops at around 13psi. Just happend all of a sudden. Any ideas?
-Dan

Nov 25, 2001 | 01:00 PM

Jerry Nuss

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boost problem

have you checked all your couplings for leakage? maybe a sealing surface is giving way at that pressure.

Nov 25, 2001 | 01:00 PM

bob13bt

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From: St. Petersburg, FL

Most likely a vacuum leak. 3rd gens are known for them. But this would also cause a bad idle. If there are no other problems besides lack of boost, them there might be a problem in the wastegate or blow-off valve.