Chiovnidca

I have an intermittent missfire with my d16z6 with Greddy turbo. Sometimes it's minor, sometimes it's pretty bad. Here's a .rec graph of a bad one. Any ideas?

lazerus

it could be your spark plug wires. does it only miss under boost?

Chiovnidca

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lazerus &raquo;</TD></TR><TR><TD CLASS="quote">it could be your spark plug wires. does it only miss under boost?</TD></TR></TABLE>
It will do it under all conditions, but it's most noticable under boost. I don't think it's ignition related. What would make the injector pulse width go ape ****?

ekb18c

what's the gap on your spark plug? Try a smaller gap.

Chiovnidca

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ekb18c &raquo;</TD></TR><TR><TD CLASS="quote">what's the gap on your spark plug? Try a smaller gap.</TD></TR></TABLE>
I tried that.

lazerus

Check your spark plug holes for water, and check for arcing through the plug boots.

how did the misfire start?

BoostedsiR

I had a bad problem once like that and it was my wires they looked fine but on the inside it was like they were grounded out

PM-Performance

mine was backfiring while we were tuning it and having slight blips at like 3800 or so , the backfiring wa sloud like a shotgun , this was when i let off the gas thogh. and the fuel maps were fine . this was tuned on a s200, once we converted the rom over to my 4b everythign worked great.
i think the s series software has some blips to itt whether anyone wants to recognize it or not .

DC2R714

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">mine was backfiring while we were tuning it and having slight blips at like 3800 or so , the backfiring wa sloud like a shotgun , this was when i let off the gas thogh. and the fuel maps were fine . this was tuned on a s200, once we converted the rom over to my 4b everythign worked great.
i think the s series software has some blips to itt whether anyone wants to recognize it or not . </TD></TR></TABLE>

I have to agree. Mine still has blips and it backfires. I dont really mind the backfiring its the blips that are just so ****** annoying. Its only in one area 300 mm/hg. I am using S100b.

PM-Performance

see mine alwyas did it on jeffs s series, he can never find anything wrong with the maps, thne we convert it back to my 4b and all the probs are gone.

dabrown

Ok, mine is doing the same... I have changed the Gap on the plugs to 30, changed the Rotor,Cap and wires. I get a blip while idling.. I know you guys love the Hondata but it appears that there are known issues that I can't get a response on from the Hondata forum. For instance the alternator voltage issue, where you have to cut the Alt-C wire in order to get the alternator to stay on... If possible hopefully this thread can get some answers.. Thanks..

Chiovnidca

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lazerus &raquo;</TD></TR><TR><TD CLASS="quote">

how did the misfire start?</TD></TR></TABLE>
It became alot more noticeable after getting rid of the stock exhaust for a 2.5 inch system. It also has a miss at idle. Compression and leakdown tests good. Ive tried all ignition parts with known good pieces.