New List Participant - very new

[Jemison Richard]

Gene,

Thanks for your response.  So you're saying the new IAC I put in is not
working correctly?  Just want to make sure I'm understanding my problem.  I
followed the instructions as closely as possible.  Checked the plunger
extension <1.125" prior to installatation.

On the bike (or any engine) - as the only DPFI I have any familiarity with
right now is a Saturn, and as I've noticed that the plenum does a couple of
nice things 1) houses the PPM, TPI and IAC and provide both ports and
mounting points for the actual injectors and 2) these ports are VERY close
to the intake port spacing on the engine I'm initially trying to adapt - I
was thinking this piece would be a good place to start and would solve a
good many of the mechanical problems.  I also believe in UFOs so I'm curious
what your thoughts on this would be.  BTW, very soon I'll be able to scan a
pix of this setup so you can see it better (you're probably not familiar -
or interested terribly) in Saturn DPFI, ha!  

The other question you asked (air cooled is yes on my initial project).
Inline 4 - which is what a good many of the performance bikes are today,
hence important.  If I could get a system to work on this type of engine - I
could get one to work on a good many bikes (with a large user base that
might be interested).

Rick
Indy

> -----Original Message-----
> From:	mrvette [SMTP:mrvette at bellsouth.net]
> Sent:	Wednesday, September 30, 1998 9:55 AM
> To:	diy_efi at efi332.eng.ohio-state.edu
> Subject:	Re: New List Participant - very new
> 
> on the Saturn,,...It most assuredly is the IAC.....on doing DPFI  for any
> engine...the hard part is the mechanicals...getting the injectors mounted
> correctly, and a t-valve (air valve) in place.....if the bike is air
> cooled
> engine, you mite have a problem with an engine temp sensor,   also with
> air
> cleaners-filters,   all of this not so easy for the home mechanic on a
> bike as
> ALOT of metal fabrication is necessary.....GENE
> 
> Jemison Richard wrote:
> > 
> > Hello and let me apologize in advance for the level of my expertise with
> > regard to electronic fuel injection.  I hope to learn much.  I've been
> very
> > impressed with what I've heard in the last few days.  I have two
> questions.
> > 
> > 1)  I have a '92 Saturn coupe with multiport injection.  It won't idle
> very
> > well at all and dies if the air conditioning is turn on (idles worse in
> gear
> > than in neutral also).  It also has a miss (sudden jerking - happens a
> low
> > to moderate speeds in gentle acceleration mode (20-40mph).  Pressing the
> > accelerator enough to go into passing gear eliminates all problems and
> it
> > runs fine - runs very well on top end also (for a Saturn).  I've changed
> the
> > IAC (my codes were pointing to that).  Oh that Idle Air Control Valve (I
> > don't know what acronyms are standard yet!)  This car has a dual
> overhead
> > cam engine 1.9L.
> > 
> > 2)  The real reason I'm here is that I'm a motorcycle enthusiast and
> want to
> > design (or adapt if someone much smarter than me has already done this!
> > This will NOT hurt my feelings any) an electronic fuel injection system
> that
> > would be generic enough in nature to fit many similar engine sized
> Japanese
> > bikes that were carbureted.
> > 
> >      At this point I don't even know where to begin.  Of course, from my
> > perspective, existing units are attractive but reprogramming the control
> > computers is a black box for me.  One thing I've toyed with is single
> board
> > computers (SBCs).  I worked a bit with process control in the
> pharmaceutical
> > industry about 8 years ago and got some experience programming these
> guys.
> > They're cheap and readily available and of late have a lot of
> inexpensive
> > digital and analog sensing options.  Big question is, has anyone gone
> down
> > this path and if so, is it worth looking at?
> > 
> >      I again apologize for what are probably pretty simple (and possibly
> > silly) questions.  I'm just looking for some good initial direction to
> > pursue.  Any help will be gratefully received!
> > 
> > Rick
> > Indy
> 
> -- 
> 
> 
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