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#1
08-12-2009, 12:42 PM
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HELP!!! misssss cant fix
1997 s-15/sonoma 4.3 vortec v6 been setting in a garage for 2 years run great when parked, replaced with a new battery started, had a bad miss, replaced plugs plug wires complete dist. dist.cap,module rotor,,, same miss CAN OBII random/multiple cylinder misfire P0300 cant figure out please HELP !!! Banging head. PS has only 33000 miles
Last edited by bsduncan; 08-12-2009 at 12:46 PM. Reason: add 
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#4
08-14-2009, 12:32 PM
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Re: HELP!!! misssss cant fix
Lets rule out the basic’s.
1. Re-check the plug wire firing order. 2. Double check for vacuum leaks 3. Fuel Pressure reading. Key on 61-65 psi. Key off, pressure leak down not lower then 55psi after 20 minuutes. 4. Check EGR valve for carbon chunks. Re-install with new gasket. Report back your findings.
__________________
1994 1st.Gen. S10 Blazer Tahoe Aloha Gabe My Fleet     
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