chrismiller5157 Posted December 1, 2009 Share Posted December 1, 2009 Surched around for related cases but nothing helpfull. Some history to start with, 1981 280zx 189,000 miles was sitting for 4 year's, changed all the fluids. This is what I have done sence I got it back from the bodyshop and have started to drive it. Changed the injectiors and injectior pluges (MSA), pallnet fuel rail, spark plug wire's (NGK), and spark plug's (NGK-R), All vacum hose's replaced. At idle the car seem's to have a miss I can hear it and see the RPM guage ticking up and down a little, I checked the spark plug's (80 miles on them) they seem fine. The reson I changed the spark plug's is becuase the old ones fouled out after about 20 miles. Any idea's or pointer's? Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted December 1, 2009 Share Posted December 1, 2009 Clean the AFM, TPS, Head Temp, and ECU connectors with electro-clean spray and use dielectric grease, smeared into the connectors, to assemble them again. It's cheap, easy and should be done regardless of the issue. Idea 2: Stuck injector. Idea 3: Stuck AFM flap Idea 4: Plug wires. Good luck!!! My idle smoothed out incredibly by side-gapping the new set of NGK's. Look it up. Quote Link to comment Share on other sites More sharing options...
chrismiller5157 Posted December 2, 2009 Author Share Posted December 2, 2009 Will do, Thanks. Quote Link to comment Share on other sites More sharing options...
Apex944 Posted December 5, 2009 Share Posted December 5, 2009 Also to add take a look inside your distributor, the E12-80 distributor the previous owner put in my L28 swapped '73 had a bad bearing in it. I found this out by accident as I was trying to figure out why mine also had a slight miss and the #5 cylinder was barely firing. Pulled the cap off to look around and noticed 3 BB's sitting in the distributor housing down below the trigger wheel. The bearing came apart and somehow didn't lock anything up inside the distributor or make any noticeable noise, but the rotor moves up and down a good bit as well as side to side ( the rotor is nice and tight on the rotor shaft )....new distributor here we come. Just an idea for something to check out if you can't find anything else wrong with it. Quote Link to comment Share on other sites More sharing options...
PanzerAce Posted December 5, 2009 Share Posted December 5, 2009 One thing you can also do is run a can of seafoam through the tank. If the injectors are clogging, that might be all you need to clean them out. Quote Link to comment Share on other sites More sharing options...
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