Maxed out injectors
#25
Junior Member
Thread Starter
Join Date: Aug 2014
Location: Pleasant grove, utah
Posts: 51
Total Cats: -3
No it's no open, that hose just wasn't on. It's an old picture. I was waiting for the Jb weld to cure. I know I need a ms. I'm not going to leave it like this! Engine has almost 300000 on it. Rebuild and proper engine management are in the near future!
#26
Retired Mech Design Engr
iTrader: (3)
Join Date: Jan 2013
Location: Seneca, SC
Posts: 5,009
Total Cats: 857
If that is not a PVC valve from a boosted car, then you are likely pressurizing your crankcase.
It would make more sense to tee the vacuum from the stock FPR port.
Guys, is it normal to leave the stock FPR when adding a Rising Rate FPR?
These are not your problem, just some polish. Speaking of polish, the compartment could use some TLC.
It would make more sense to tee the vacuum from the stock FPR port.
Guys, is it normal to leave the stock FPR when adding a Rising Rate FPR?
These are not your problem, just some polish. Speaking of polish, the compartment could use some TLC.
#28
Sounds like you need either way less boost or way more fuel.
Do yourself a favor and disconnect the wastegate so it's open all the time until you get it sorted out. You should still make a couple psi that way and the car will be considerably quicker and more driveable, plus infinitely safer than it is now. You're seriously going to blow it up very soon how it is now.
Do yourself a favor and disconnect the wastegate so it's open all the time until you get it sorted out. You should still make a couple psi that way and the car will be considerably quicker and more driveable, plus infinitely safer than it is now. You're seriously going to blow it up very soon how it is now.
#29
Retired Mech Design Engr
iTrader: (3)
Join Date: Jan 2013
Location: Seneca, SC
Posts: 5,009
Total Cats: 857
Sorry if I added confusion.
Ben is right, a gauge would tell you what is / is not happening. Pdexta also gives good advice to minimize boost until you find the root cause of lack of fuel.
Again, others have used band aids and know how to fix, I was just trying to proactively address the next set of issues.
#32
Retired Mech Design Engr
iTrader: (3)
Join Date: Jan 2013
Location: Seneca, SC
Posts: 5,009
Total Cats: 857
Props to Ben for genuine concern.
OP, Ben used to run a RRAFR, according to a thread I ran across.
FMU_discussion
OP, Ben used to run a RRAFR, according to a thread I ran across.
FMU_discussion
#33
Junior Member
Thread Starter
Join Date: Aug 2014
Location: Pleasant grove, utah
Posts: 51
Total Cats: -3
I was referring to it going lean at full boost. It still gets pretty lean high 15s low 16s. It's a lot better than the the three dots right? I know I'm on aids and that needs to and will change! But until I get a ms, would the rich idle be caused by the 1.8 injectors?
#35
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,046
Total Cats: 6,607
The one time that I did install an RRFPR, thus is what I did. I prefer that line, or the brake booster hose, not just for FPR but also MAP, mostly because I know that they're wide open inside and give a clean reading. Sometimes (and I'm embarrassed to say that I've never looked into this on a Miata), one or more of the ports near the throttle body are engineered not to yield a signal at the extremes of throttle position.
Yes. Nearly all* RRFPRs are active only at manifold pressures greater than atmospheric, and simply pass through when in vacuum. If you installed one of those and removed or bypassed the stock FPR, then you would have no fuel pressure at all when not in boost.
* = A couple of companies, including Bell, make "multi role" regulators which function similarly to the stock regulator in a factory turbo car, operating in both boost and vacuum. The vast majority of RRFPRs used in aftermarket forced induction applications are not this type.
^ Also this.
* = A couple of companies, including Bell, make "multi role" regulators which function similarly to the stock regulator in a factory turbo car, operating in both boost and vacuum. The vast majority of RRFPRs used in aftermarket forced induction applications are not this type.
^ Also this.
Thread
Thread Starter
Forum
Replies
Last Post