I need idea's. I am working on a 1998 GMC 3500 5.7L that is running rich on both banks. Here's...
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I need idea's. I am working on a 1998 GMC 3500 5.7L that is running rich on both banks. Here's what's been done so far. Cap, rotor, plugs, and wires were replaced before I got the vehicle. I rechecked the cap and rotor to make sure that signs of ignition contact were on each terminal and also checked wire routing - both are good. Verified key on and engine running Fuel Pressure. Checked for fuel pressure drop - minimal (about 10 PSI in 25 min). Performed injector balance test - normal (all at 13psi drop). I swapped out the Coil and Ignition module with a known good one - no change. Disconnected MAF - no change. Disconnected both #1 O2 sensors - no change. So I finally removed the upper intake plenum to check the fuel pressure regulator. When 20-25 of vacuum was applied no fuel came from regulator, but I can smell fuel vapors from the vacuum hose. I know that this can cause a rich condition but I haven't had vapors cause a vehicle to run this rich (-18% on both banks). Before I tell him to spend 80 bucks on gaskets and a regulator I want to make sure I check everything.
i blew the 4oamp ignition fuse-replaced it and blew the new one on the 1st start attempt. ?is it the...
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i blew the 4oamp ignition fuse-replaced it and blew the new one on the 1st start attempt. ?is it the ignition switch? ? how do i replace it?
the front bearing on the fan housing shaft is broken, how do I get that shaft out, or do I have to...
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the front bearing on the fan housing shaft is broken, how do I get that shaft out, or do I have to take the housing out