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Re: Detonation at 0.8 bar

At 01:00 PM 8/1/96 MDT, you wrote:
>My '87 5kTQ just got its Charlie Smith spring installed, plus a
>new head gasket.  With the fuel pump grounded per instructed I've
>seen 1.6 bar.  (Without the ground, boy that sucker cuts out
>Anyway, I don't drive this thing much cuz it's got an open
>exhaust from the downpipe back.  Not popular with the neighbors!
>(Its also got a full cage, race seats, Michelin L4's etc).
>The problem:  Yesterday the picture of the engine came on (the
>"check engine" light), presumably to say that it was detonating,
>but at only 0.8 bar.  Very consistent at this level.
>Steve in Calgary
  You have a hole in your I/C to intake hose. Probably on the bottom. The
check engine light indicates that the timing is at max. retard. BTDT on both
cars (both have the Charlie Smith spring). I bought new hoses and have not
had a problem since. It's awesome when the boost comes on now isn't it? 

               Michael Loeks
               '86 5kcstq - Red w/ Fuchs/D60A2 1.8 bar boost
               '86 5kcstq - Grey w/ stock wheels/Comp T/A HR4 1.8 bar boost
               '84 Ford F350 dually flatbed(NOW we're talking utility)
               Warren, Oregon