bobbyc Posted July 29, 2009 Share Posted July 29, 2009 im finally to the point where i'm gettin the z running...it's been 3 long years. it starts no problem...but sounds like its running on 4 or 5 cyl....i pulled the #6 plug and it's clean...no signs of firing, i pulled the wire and it's gettin spark, freakin thing traveled all the way through my body and out my toe. can a spark plug be a dud? there's definately fuel, i just had all 6 injectors sent to witchhunter to be flowtested and cleaned. what could be goin on? Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted July 30, 2009 Share Posted July 30, 2009 Pull the plug and unplug the injector to that cylinder. Leave the plug connected to the wire, and touch the body of it to a ground. See if the plug sparks while the motor is running. Quote Link to comment Share on other sites More sharing options...
zedman240 Posted July 30, 2009 Share Posted July 30, 2009 Was the plug wet with fuel? If it was, a plug with fuel "shorts" and doesnt fire making the problem worse. Just grab a spare plug and install. Check the lead connector also. Quote Link to comment Share on other sites More sharing options...
jasper Posted July 30, 2009 Share Posted July 30, 2009 Swap plugs 5&6. See if the problem moves. Also try the wires. Certainly could be injector/electrical. Swap injectors. Stuck valve? Quote Link to comment Share on other sites More sharing options...
bobbyc Posted July 30, 2009 Author Share Posted July 30, 2009 i forgot to add that the plug is wet with fuel...i'm gonna try taking the plug out and unplugging the injector. thanks guys..post back with results Quote Link to comment Share on other sites More sharing options...
roger.svoboda Posted July 31, 2009 Share Posted July 31, 2009 no reason a new plug can't be bad out of the box. Even marginal and will spark under atmospheric pressure but won't go under compression pressure. Try new plug or do the 5,6 swap suggested. Quote Link to comment Share on other sites More sharing options...
bobbyc Posted July 31, 2009 Author Share Posted July 31, 2009 went and got a new plug, tested out of the car...showing spark...installed...same thing...showing no signs of sparking after starting the car and then pulling the plug. switched #5 and #6 plug wires and i get the same thing...that #6 plug looks brand new. i'm running the sds 6f with coil packs.....i'm gettin plenty of spark when i'm pulling the wire off with the car running...like i was saying earlier...traveled all the way down my body and out my toe. what could be going on? i'm stumped....i really want to hear her run normal. i really dont have any way to test the injector...i just got them all back from witchhunter performance though...they provided data sheets showing they were all flowing as they should. Quote Link to comment Share on other sites More sharing options...
roger.svoboda Posted August 2, 2009 Share Posted August 2, 2009 when you say you switched plug wires I hope you swapped both the distributor end and the plug end other wise they would both spark at the wrong time. Next try might be to fire it up in the dark and check for sparky things in the wrong places. Somehow the spark is finding a way to ground that is easier than jumping the gap on the plug. Any carbon tracks or other oddities that can be seen on the dizzy cap? I had a new dizzy cap with the contact point for the plug bent in enough that the rotor was hitting it. Bent it out and all was good. You might have the opposite contact point far enough from the rotor that spark won't get there when engine running. have you tried different dizzy cap and rotor? Remember just cause you get a jolt from the wire doesn't mean that the spark is jumping the gap of the plug. High voltage does strange things. Quote Link to comment Share on other sites More sharing options...
bobbyc Posted August 3, 2009 Author Share Posted August 3, 2009 i switched the wires so they were on the right cylinder. i have the coil pack fromt he sds system...i will turn off the lights and try it...see if i find anything there...thanks for the help! i tried pulling the wire with the car running...and there is a good arc to the plug top.... Quote Link to comment Share on other sites More sharing options...
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