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My 1998 Tahoe was running awful, missing badly and usually cranked for 3 or 4 seconds before starting. Complete tune up (wires, cap, spark plugs ) and it didn't help. Did some research on Youtube and found that the old poppet Central Sequential Fuel Injection style fuel injectors are a horrible...

If it's hard to start and you've already done spark plugs, wires, distributor and fuel filter I can almost guarantee you it is the spider injection which was a bad design to begin with. There is a fuel regulator on the old design spider injector that looks like it should have a hose connected to...

Just went through the same issues with my 1998 2 dr Tahoe. The washing of the intake manifold is a bad sign and mine had the same thing. Replaced the old poppet style injectors with the new style from Delphi and it idles like new now. Also replaced the throttle position sensor, air idle control...