Check valve adjustment on #5, is cam lobe worn?
Um, number 5 coil pack ok? if no separate coil pack. meaning 1 coil sparks all cylinders, then replace distributor cap and rotor. if after new distributor cap and rotor replacement still no #5 spark, replace distributor.
Use injector node light to check for voltage at harness plug... If there's spark at the wire and fuel pressure, then must be clogged and or partial clogged injector... dose the engine run smooth with miss? Did you use a new injector on 5 ?
SOURCE: wont start has fuel and has spark
RC ralston
Your problem is a leak in the cpi pletium most likely the pressure line has a leak
had same problem with mine $45.00 PRESSURE LINE KIT AND $15.00 GASKET FOR PLETIUM and 2 hours labor problem sovled.
You can remove vortec cover and remove air regulator to look inside pletium. I had gas vapor on driver side . that is where fuel lines are. fuel regulator is on passenger side. turn key on and look in hole and see where fuel is spraying. taking pletium off you can again turn key on and make sure where fuel is coming from.
SOURCE: My 2000 Chevrolet S10 ZR2,
I have done a full engine replacement on these, a zr2 to be exact. I have found that a p0300 (multiple misfire) usually points the the Piece of **** injection spider, then I had a p0301 as well after replacing that with the multiport unit upgrade and found that the spark plug electrode folded over shorting to the center conductor.
Marc Reaves
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