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Author
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Topic: Fuel injector question
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Jimbo
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Member # 1456
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posted
 
 
Does anyone know what the ontime at idle for a stock 19lb injector on a pretty stock 92 5.0L should be? Any help would be GREATLY appreciated!
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1965 Mustang Coupe
EFI, 302ci, T-5, 3.70's.
Click for My Mustang Pics
Posts: 352 | From: Castro Valley,CA | Registered: Jun 2002
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mtbaughs
Road Racer
Member # 4052
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posted
What do you mean by ontime at idle?
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R.I.P. Charlie Bruno Dec 2001
Posts: 2019 | From: Boise, Idaho | Registered: Jan 2004
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BlueOvalRacing
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Member # 1531
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posted
At idle, (hot) the pulsewidth should be around 4.6-4.8 ms
Posts: 1159 | From: Pioneer | Registered: Jul 2002
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Fostang
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Member # 3752
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posted
Using tweecer? ![[Razz]](tongue.gif)
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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Fostang
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Member # 3752
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posted
quote:
Originally posted by BlueOvalRacing:
nope, using Ford ![[Wink]](wink.gif)
No I meant is he using the tweecer and thats why he needs the pulse widths to compare to his now modified ones.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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Jimbo
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Member # 1456
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posted
quote:
Originally posted by BlueOvalRacing:
At idle, (hot) the pulsewidth should be around 4.6-4.8 ms
Thank you kindly sir!
Nope no tweecer yet ![[Frown]](frown.gif) but hopefully one day. I've been trying to figure out why I'm getting fairly lousy mileage. Back probed my injectors pulsewidth at idle was 5 ms, seemed a bit high to me but I guess its not too far off spec, my idle is set a bit high right now anyway(900rpm). Mass Air, O2's, ECT, all are operating correctly, think I'll start looking elsewhere like maybe a draging caliper or something.
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1965 Mustang Coupe
EFI, 302ci, T-5, 3.70's.
Click for My Mustang Pics
Posts: 352 | From: Castro Valley,CA | Registered: Jun 2002
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Fostang
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Member # 3752
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posted
Have you tried pulling codes?
Sounds like it's limp home mode where it just dumps fuel into the equation thus making it wast far more gasoline.
Have you eliminated the smog equipment? that would set it in limp home mode.
Get the tweecer and cancell all that crap out.
You'll be happy you got one.
Plus it doesn't need to be an rt.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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