Date: Thu, 12 Oct 2006 21:21:28 -0400
From: "Steve E." <>
Subject: Re: '93 9000 Aero misfire...

"bozo" <> wrote in message news:8HAXg.11019$ > Check your vacuum hoses - > > - from the fuel pressure regulator (little can about size of stack of > quarters sitting on the passenger side end of the fuel rail feeding the > injectors) vacuum line runs about 6" to the intake manifold. > > - from the charge air bypass control valve on the drivers side wheel well > by the battery - 3 hoses run down behind the relay box by the battery and > then - 1 branches off to the nipple on the 'hooter' and the other two run > alongside the bottom of the batter - 1 to a 'wye' connector with a line > feeding into the aquarium (and then into the dash for the boost gauge, I > think) and one up to the underside of the throttle body (at least this is > the setup on the electric throttle body for a '95 w/ TCS system) > > - from the boost pressure controller at the upper drivers side of the > radiator, 3 lines - 1 to the turbo waste gate, 1 to the intake manifold > and 1 to the turbo > > look at quasimotors site for photos that show the connections of the hoses > to the BPC > > it could be other things, but the vacuum lines tend to rot in the engine > compartment heat and are the easiest culprits to check and replace > > if they are all good - when was the last time the plugs were changed or > re-gapped, was dielectric grease used to keep the spark from arcing down > the plug insulators and and how's the direct ignition cassette doing? > > "Hywel" <> wrote in message > news:zoedndppDrYKJLPYRVnyvwnospamom... >>I have a'93 9000 Aero with about 130,000 miles on the clock. If I >>accelerate hard the car seems to misfire violently at about 3500 - >>4000rpm. This just happens for an instant and then it carries on >>accelerating hard as it should. >> I say 'misfire' because that's all I can think it is (maybe something >> else), but otherwise the car drives perfectly at all other times. >> Any ideas anyone? >> > > What about the DI cassette?

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