Ok, well first off let me give you some background on my motor. I rebuilt it with the RA kit and did a large street port(ito porting template) to be exact. It has ebay hard pipes and kn filters, hks downpipe, and a hks hipower exhaust. I fired it up today and i had a hard time gettin it to go but after giving it some gas i could keep it at 2k. It was loud and kinda rough I let it run longer for about 30min, turned it off to go inside then went back out and turned it on. I checked all fluids and topped everything off. Right now i can keep a steady idle at about 1.5k. Everything appears to be running cool and im pulling 10in of vac. I drove it around the block keeping it under 2.5k and when i came back i had flames while idling. I turned it off and turned it back on and no flames, drove it again and flames again! I reved the engine to like 2.5k and shot like a 4 foot flames, and again little flames while idling. What is going on? Im breaking it in as directed. I think theres also air comming out of my BOV when idling. Do i need a pfc already or what? Im scared to drive this thing around like this. Any help will be appreciated. Thanks!

 

You should definitely get a PFC and get it tuned properly

 

You should get a PFC so you can adjust your timing accordingly to your port job, I wouldnt drive it with those mods without getting it tuned...

 

damn, thought so......

 

hehehe...take a pic of the flame at night!!

 

I think im going to go ahead and get a pfc from japan parts on ebay, $820 for the unit and commander. ALso a LM-1 wideband. I keep getting paranoid i hooked something up wrong, but i guess if i did it wouldnt stay on at all.?

 

there's a thread right now in the 3rd gen classifieds with a few guys (myself included) trying to get a group buy direct from the same company doing the ebay auction. Last time I checked we had 3 and we just started looking for people today. Once we hit 10 that should give us some bargaining power.

 

I ordered mine from them and there is a long wait. Took about a month to get and the directions were in japanese but it works and the controller is in english so why not. good communication too

 

Thinking it through, shouldnt my car be running lean rather than rich with what i have done with it?

 

How long was your car down for before you had it all back together again ?
What does the exhaust smell like ? Color of smoke if any ? Have you checked your fuel pressure at idle ? Actually does it idle at all ? What kind of vacuum are you seeing at idle ?

 

yea get the PFC, well worth it, got mines in and gladly satisfied

 

My car was down for 3 months. The exhaust smoked for a while with light white smoke then it went away. Its smokes for a little bit until it warms up then it goes away. The exhaust smells rich, like really rich, It burns my eyes. It idles ok from around 1.3-1.5k, but only after it warms up. Sometimes it dies right away after starting unless i keep it at like 1.5-2k for a few minutes. Ive been getting 10in of vac at around the lowest idle. Anywhere past 1.7k i start getting boost. I havent checked my fuel pressure.

 

what i didnt understand especially was my stock bov was venting constantly at 2k, and did i mention the constant flames during idle after driving it...even though it was cool

 

After reading this thread, https://www.rx7club.com/3rd-generation-specific-1993-2002-16/still-running-rich-other-problems-401456/ it seems that im running rich because of my porting. Because of the porting, the engine is not pulling as much vacuum as would a non ported engine, therefore the stock ecu is adding fuel to compensate.

 

I believe your blow off valve is venting possibly due to a vacuum leak. Check your map sensor, if it turns out to be the map sensor connect it and then reset your computer.

 

I knew that was coming lol.

A venting BOV will not inhibit flames at idle and enduce even more flames when the engine is revved up. If his map sensor was not connected he wouldn't be able to drive it as long as around a block. He states no comment with having a boggy *** idle and having the car dying out on him.

Jeremy

 

Installing a PFC is not going to fix your problem. Jesus people, he's talking about FLAMES. He's got a basically stock car with a streetport. It should run just fine with the stock ecu. Depending on the size of the port, I suppose it could certainly idle a bit funky, but not anything like what you are experiencing....

You have some issue with the rebuild/reinstall, period. Get back to basics and start troubleshooting.

 

That's not quite true. I was able to drive my car more than around the block with the MAP not connected. It ran like ****, and bucked, but was still able to. I wouldn't rec. doing so though, it's a long story as to why I had to.

-Alex

 

If you ask me you vacuum is low. My guess is as others have stated you have a leak somewhere either vacuum related or perhaps LIM is leaking. Your BOV should not be venting either.

 

stock BOV vents air when vacuum is applied.

your idle at 1.5k and 10in-hg...seems low as far as vacuum goes.

Ito's ports are aggressive.

 

i just realized that the hose going from the turbo inlet to the oil filler isnt connected, i doubt that would make a difference but its possible. any one know? I took off my UIM today and im going to retrace all the vac lines and make sure everything is ok

 

i dont think 10in is out of the question, but at a lower idle

 

^that's why I said what I did.

10in would be fine at 900 rpms.

 

On my first rebuild I messed up too and it sounds like what mine did. I ported everythingIt was only a racing beat template but I did the secondaries and the primaries. The motor still runs today years later on a E6k but still has the idleing fireball problem.
(yes I sold the car like that)
Yes I've learned since then only port the secondaries!

Anyway good luck 209FD

 

I know this is really a late reply but my fuel lines were hooked up backwards...haha go figure but it fixed it!