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Author
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Topic: 24 lb injector issue
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partsbob67
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Member # 8836
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posted
 
 
been running 19lb injectors in my race car. switched to 24's and now it wants to start missing at 4'000 rpm and goes way rich on the wideband. any body else have this problem?
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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2BlueGeeTees
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Member # 4702
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posted
What else did you change with the injector swap. MAF, fuel pressure, timing? More info needed!
Posts: 2316 | From: Vacaville | Registered: Jul 2004
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partsbob67
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Member # 8836
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posted
changed maf. everything else i left alone. specs are a 92 5.o, stock intake, tb, stock e7te heads, 38 lbs fuel press.
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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phonso302
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Member # 9260
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posted
quote:
Originally posted by partsbob67:
changed maf. everything else i left alone. specs are a 92 5.o, stock intake, tb, stock e7te heads, 38 lbs fuel press.
Why would you swap to 24lb injectors you don't need them... 19lb injectors are more than enough you have a stock engine
Posts: 1820 | From: PINOLE | Registered: Jun 2009
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partsbob67
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Member # 8836
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posted
not quite stock. cam is 242/248@.050. long tubes also.
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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phonso302
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Member # 9260
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posted
quote:
Originally posted by partsbob67:
not quite stock. cam is 242/248@.050. long tubes also.
I still can't see why you would think those two mods would justify larger injectors... you still have stock heads/tb/intake
Posts: 1820 | From: PINOLE | Registered: Jun 2009
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partsbob67
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Member # 8836
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posted
i see your point. i'll be changing them back tomorrow. thanks.
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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Notch1320
Man Pedal
Member # 2647
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posted
Bob, let me know when you go out next. I run the 24's just because I had new ones. Kind of odd that you are having issues. What MAF?
Posts: 2349 | From: Yuba City, CA | Registered: Mar 2003
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partsbob67
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Member # 8836
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posted
mass air is the brand i think. going to vegas at the end of the month. you ever think that maybe you need 19's in yours? doesn't run real fat on the top side?
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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Notch1320
Man Pedal
Member # 2647
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posted
I may try a set soon if I ever get my car back together.
Posts: 2349 | From: Yuba City, CA | Registered: Mar 2003
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ddarkslayer
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Member # 10688
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posted
did you change the sample tube in the MAF body? my car runs 24 ibs with no issues.
Posts: 307 | From: Folsom | Registered: Feb 2011
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partsbob67
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Member # 8836
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posted
changed maf also. i guess just like they said, not enough air for those injectors. maf is a pro m.
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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ddarkslayer
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Member # 10688
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posted
is it tuned for 24?
Posts: 307 | From: Folsom | Registered: Feb 2011
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partsbob67
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Member # 8836
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posted
yes. at least it says so on top of it.
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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89Rodknocker
CAFords OG
Member # 2951
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posted
Lets all keep in mind when these guys running stock eliminator are running faster than a good amount of people on here with a tons of bolt ons these aern't "stock" cars. I'd go with the 19's but the 24's shouldn't be that overly rich on the top end. Maybe a faulty maf.
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89 lx (stolen and stripped)
94 gt runner (sold)
89 lx Stock(sold)
86 gt T-trim (sold)
73 Camaro BBC
01 5.0 Explorer limited Borlas (sold)
Posts: 2488 | From: Bay Area | Registered: Jun 2003
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Notch1320
Man Pedal
Member # 2647
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posted
quote:
Originally posted by 89Rodknocker:
Lets all keep in mind when these guys running stock eliminator are running faster than a good amount of people on here with a tons of bolt ons these aern't "stock" cars. I'd go with the 19's but the 24's shouldn't be that overly rich on the top end. Maybe a faulty maf.
Hahahah, It's nice to see someone knows a little about this class!
Posts: 2349 | From: Yuba City, CA | Registered: Mar 2003
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ddarkslayer
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Member # 10688
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posted
my best bet is to inspect the MAF. bench test it.http://www.youtube.com/watch?v=NRIDW0xRmYo
Posts: 307 | From: Folsom | Registered: Feb 2011
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partsbob67
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Member # 8836
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posted
thanks. i will try that.
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bob
Posts: 81 | From: rohnert park | Registered: Jan 2009
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