2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Need HELP overfueling????

Old May 1, 2003 | 11:52 PM
  #1  
GT4TOY's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Apr 2003
Posts: 13
Likes: 0
From: New Zealand
Exclamation Need HELP overfueling????

I have a series 4. just had the back rotor rebuilt.
Was running on front cylinder ONLY when the back was gone.
Now i'm having real trouble to ,
get it started, only way (when cold) is to vice grip the fuel line and as it gets running let it off,
Heaps of fuel vapour coming out exhaust if you let it crank.
When hot it won't start at all, it does try but wont run.

However when you get it started it goes real well!!
Just won't idle under about 2000rpm,

now this sounds like a vacum leak to me but i can't find it. Is it becase the seals in the back rotor are new,
I have removed all the emission crap.
But how does the auto choke work,
please can someone help me sort this out??
Reply
Old May 2, 2003 | 12:21 AM
  #2  
GT4TOY's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Apr 2003
Posts: 13
Likes: 0
From: New Zealand
bump
please help asap
Reply
Old May 2, 2003 | 11:57 AM
  #3  
Cosmo Donk's Avatar
Queer
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 742
Likes: 0
From: Formerly in the Ass end of the pacific.
Were the injectors tested and cleaned when you had them out? Who put the injectors in? They may have touched some dirt to them and stuck one of them open.

The car should start fine once you have warmed it up so it seems like some fuel is getting in there somehow.

The only fuel trick I know on these cars is when they are cold they injecto more fuel so if you turn them on and then off it will flood the car.

Once it is running and idling take some WD-40 or carb cleaner and spray around the vacuum lines. If the idle goes up you have found a leak. Just be careful where you spray that stuff.
Reply
Old May 2, 2003 | 12:38 PM
  #4  
jon88se's Avatar
Eat, sleep, work, mod.
Tenured Member: 20 Years
 
Joined: Jun 2001
Posts: 2,517
Likes: 0
From: Long Island
car is flooding, your injectors are toast
Reply
Old May 2, 2003 | 03:04 PM
  #5  
Scott 89t2's Avatar
SOLD THE RX-7!
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 7,451
Likes: 0
From: Vancouver, BC, Canada
who rebuilt it? why would they only do one side ??...
Reply
Old May 2, 2003 | 03:08 PM
  #6  
jon88se's Avatar
Eat, sleep, work, mod.
Tenured Member: 20 Years
 
Joined: Jun 2001
Posts: 2,517
Likes: 0
From: Long Island
good question
Reply
Old May 2, 2003 | 03:14 PM
  #7  
GT4TOY's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Apr 2003
Posts: 13
Likes: 0
From: New Zealand
The back rotors spat the apex seals so i went for a quick fix,
I put the injectors in and noticed they sort off fell into there holes!!
Maybe those small seals need replacing??
When i took out the rats nest i plug everything back into the manifold on the nearest fitting...
Things like the BOV, Boost sensor, that diaphram thing (might be the cold start choke)?? and the fuel reg do these have to go to there own fitting or will any do??
I think this might be the problem??
Reply
Old May 2, 2003 | 09:59 PM
  #8  
GT4TOY's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Apr 2003
Posts: 13
Likes: 0
From: New Zealand
bump
Reply
Old May 3, 2003 | 02:36 PM
  #9  
GT4TOY's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Apr 2003
Posts: 13
Likes: 0
From: New Zealand
Bump
Please help.
what do i do to sort the injectors out??
Reply
Old May 3, 2003 | 08:48 PM
  #10  
GT4TOY's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Apr 2003
Posts: 13
Likes: 0
From: New Zealand
Exclamation

Ok took off manifold and recheck again.
Made sure no leaks were present.
Blocked up the bleed thing that runs down the exhaust and that bought the idle down, is it meant to be blocked??

Took both sets of injectors out and checked them no leaks, however the stream out of the primarys is more like a squirt of fuel than a fine atomised spray???
is this right....

There was a crack in the inlet pipe for the turbo so i siloconed it and wraped it in tape....

It is still doing the exact same thing!!!!
Takes alot of cranking to start cold with the fuel blocked by a set of vice grips

And won't start when hot!!!!


HELP!!!!!!!!!!!
Reply
Old May 3, 2003 | 08:58 PM
  #11  
RexRyder's Avatar
Rotary Freak
Tenured Member: 20 Years
iTrader: (11)
 
Joined: Dec 2001
Posts: 2,965
Likes: 6
From: Tucson
im surprised to one has told this fellow rex owner the quik fix too all his problems. The fuel cut-off switch, DER??? hot-start is a common problem among tii's. also probably need new set of primaries if its squirting/dripping.
Reply
Old May 3, 2003 | 11:51 PM
  #12  
GT4TOY's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Apr 2003
Posts: 13
Likes: 0
From: New Zealand
I'
m cutting the fuel off by vice griping the line.
However i don't think this is the problem.
Tow started it about 1/2 hour ago and it foul plugs got it running on 2, there is no boost gauge and it feels like it keeps on spooling, VERY FAST....
Still won't idle
what should the compression measure on my gauge
???

PS it's started beeping at me 3 times pause then 3 again,
what does this mean. it's a beep not a buzz

Last edited by GT4TOY; May 3, 2003 at 11:54 PM.
Reply
Old May 4, 2003 | 12:10 AM
  #13  
SonicRaT's Avatar
Super Raterhater
Tenured Member: 20 Years
iTrader: (6)
 
Joined: Dec 2001
Posts: 10,630
Likes: 3
From: NY, MA, MI, OR, TX, and now LA or AZ!
Well, if you're using new apex seals, it's going to be hard starting. And since you're injector is just pissing fuel rather than spraying, that's not helping any. You're going to want the idle up around 1,000-1,500rpm for a while, and don't boost either. Check out http://www.rotaryresurrection.com about starting rebuilds and breaking them in, even though you've only got one new set of seals on one rotor, it's still going to apply. Btw, get your injectors cleaned or install a fuel cut switch, you're going to fry your pump just crimping the line.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Blastfastrotary
Build Threads
1
Jul 8, 2015 09:48 PM
Dell'orto
3rd Generation Specific (1993-2002)
3
Jun 2, 2015 07:41 PM
AndyMac
3rd Generation Specific (1993-2002)
6
Jan 5, 2009 11:00 AM
Integrals
3rd Generation Specific (1993-2002)
6
Oct 1, 2007 02:21 PM
Grizzly
3rd Generation Specific (1993-2002)
10
Jun 18, 2007 01:01 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 05:49 AM.