Date: Wed, 30 Aug 2000 09:05:15 -0400 From: "Jeff Augenstein" <jeffanopsamncomputer.com> Subject: Re: 9000 Aero Problem
Since this thread has turned into one about spark plugs I had a question along those lines. At my 65k mileage major service my Saab dealer replaced the NGK BCPR7ES plugs in my 94 Aero with the NGK BCPR6ES plugs. When I questioned this he referred me to a Saab Service Information bulletin 340-2030 which recommends the 6ES plugs. The bulletin referenced the 170hp B235E engine but the mechanic said it applied across the board. The 6ES are hotter plugs that were supposed to address long cranking periods before the engine starts. Should I replace the 6ES with the 7ES? Are there any disadvantages to the hotter plugs in the Aero engine? Thanks, Jeff Mathias <af_RGnopsamnt.ser> wrote in message news:39AAA9C0.78629060nopsamnt.ser... > The first thing to check is the plugs. Use NGK BCPR7ES-11 and gap them > to 1.0mm, nothing more, nothing less. Its important to have them gapped > properly. Even if your plugs are quite new, replace them with new ones. > Do NOT use any other plugs than these NGKs. > > If this does not help, check the DI unit. Replace it with a known good > unit. Dont bother about looking for sparks, that wont be the problem > (wont see the effects of a bad DI until its hot and you push hard). > > If this doesnt help, look for fuel related problems. Most often these > problems are related to the ignition system, not the fuel system. > > /Mathias > > > > Dave Speed wrote: > > > > 1995 9000 Aero > > 40 K miles > > > > Driving west out of San Antonio, TX on I-10 > > Ambient temp 94 deg F; full tank of fuel. > > > > 75 mph / 2500 rpm in 5th gear pulling up a long hill; showing > > just a little boost on the turbo, as I opened the throttle, the > > engine cut out, then picked back up. > > > > Did it again a little later and the engine died. Coasted to a stop > > and it star
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