Date: Fri, 13 Oct 2006 00:01:08 GMT From: "bozo" <bozonospam.net> Subject: Re: '93 9000 Aero misfire...
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" <h.merrettnospamenworld.com> 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? >
