My s14 is running like crap! Please help

[s13 drifta]

Well my s14 with a ka24de just started running like shit out of no where. It idles very low and bounces all over the place, it spuddering when I give it gas and blowing black smoke. I think my mafs might be going bad, but I just wanted to get some extra opinions before I buy a new one.

[nissan240syan]

I got the same problem. it goes pms on me some days its perfect other days its runs like crap

[infinitexsound]

clean the maf, check igntion stuff... i would think those could be the problems...

[contranication]

well for idling I say clean the IACV... clean your throttle body...

Seafoam it, throw some spark plugs in there... blah blah

just tune it up but thats a start

[Z U L8R]

recommend new maf , new plugs, and a 22oz Icehouse

[Evil240]

i had the same issue, i ran fuel injection cleaner.. ran it twice and it cleared up... but yea.. i would probally do a full tune up.

[s13 drifta]

Yeah I already cleaned the mafs and all connectors, changed to iridium plugs, new wires, changed oil, replaced cts, checked timing and I just bought some fuel system cleaner to see if that will help. I was planing on converting my ecu to obd1, so I mine as well just buy a s13 mafs while Im at it.

[pbcstylez]

try this, clean the maf better

http://www.zilvia.net/f/showthread.php?t=139980&highlight=s14+mafs+repair

sr240det did a great writeup, he used a different type of cleaner than I, but in general this will be sufficient. there is also another link somewhere that has a video on how to inpect your MAF. just be real careful removing the 4 small phillips screws.

[ThomasJamal]

i had the same issue, i ran fuel injection cleaner.. ran it twice and it cleared up... but yea.. i would probally do a full tune up.

Just be careful which injector cleaner you use. Some can be very corrosive and can actually hurt the stock injectors.

[s13 drifta]

Yeah Im using that gumout fuel system cleaner.