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Helmsy Helmsy is offline
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Join Date: May 2008
Location: South Australia
Posts: 281
You can lower your system pressure by a small amount with a thinner shim and it should stop 'dieseling'. You can also jumper bypass the delay-shutdown relay and should solve the problem.

I replaced all my injector blocks and injectors and still had this problem whenever I raised my system pressure. I believe that in my case it is probably my fuel head. Another indicator in my case is going rich under boost even when the signal line to the WUR is disabled.

So check your injectors and blocks but keep in mind it may not be them causing it.
'85 930 - Black on Black
'95 993 Turbo - Silver

Last edited by Helmsy; 09-22-2011 at 04:31 PM..
Old 09-22-2011, 04:29 PM
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