cyl 4 misfire

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slyhog022056

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Back again. Got a cylinder 4 misfire, been trying off anf on to fix it. No luck so far. Have changed all coil packs, plug wires, plugs, I do have spark at cyl 4.No knocking like a stuck lifter. Should I swap a couple of fuel injectors around or is there a way to check the wiring plug for getting a firing command. Where do I go next before tearing off the intake manifold for a stuck lifter. I pretty much stopped driving it because fully floored it takes better than 1/4 mile to get up to 50 and 70 at WOT
 

Geotrash

Dave
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Back again. Got a cylinder 4 misfire, been trying off anf on to fix it. No luck so far. Have changed all coil packs, plug wires, plugs, I do have spark at cyl 4.No knocking like a stuck lifter. Should I swap a couple of fuel injectors around or is there a way to check the wiring plug for getting a firing command. Where do I go next before tearing off the intake manifold for a stuck lifter. I pretty much stopped driving it because fully floored it takes better than 1/4 mile to get up to 50 and 70 at WOT
Pull the pax side valve cover and crank it over. If the #4 rocker(s) don't move, you've found your problem.
 

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