Injectors too big?????
02-19-2012, 02:42 PM
#1
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Year: 88
Model: Cherokee
Engine: 4.0
Injectors too big?????
I just put in some injectors today. They are for a stroker the light blue ford ones I believe they came out of a navigator. anyway they were all new and flow matched and all that. put them it it ran a little rough for the first couple of warm ups but other than that it seems fine. I didn't notice much power difference if any or any real differences for that matter. which is fine I replaced them due to the stock ones being mismatched and two of them were leaking. But I got to looking around and it looks as if these injectors are running much more fuel than most. 24# at 39 psi. So What Im trying to figure out is should I change anything to optimize my setup.
88 cherokee
4.0 short ram intake.
5 spd.
88 cherokee
4.0 short ram intake.
5 spd.
02-19-2012, 07:46 PM
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Did you reset your computer after the injector install its important to do that in order for the computer to adjust to the new injectors
02-19-2012, 07:48 PM
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Yeah I reset the computer. Even though its renix and I dont think the computer stores info for the fuel system I figured it couldnt hurt.
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02-21-2012, 08:42 PM
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Year: 92 XJ (RIP)
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you say the injectors are for a stroker, do you have a stroker engine? If you dont have a stroker, you are getting too much fuel.
02-21-2012, 08:44 PM
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02-21-2012, 08:54 PM
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02-22-2012, 05:20 AM
#12
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Smaller injectors (Bosch 703 from a Neon) or lower fuel pressure. Dropping the fuel pressure will probably cost more and has the additional downside of less atomization of the fuel.
Only other option is to make it a stroker so it needs the extra fuel the injectors are supplying.
Only other option is to make it a stroker so it needs the extra fuel the injectors are supplying.
02-22-2012, 05:20 AM
#13
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Change them with 19 lb injectors and sell the ones you've got to someone doing a stroker.
02-22-2012, 09:22 AM
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Yeah that will probably be what I do. Find some neon injectors. These have gotta go. Sucks too. Lol there new and clean and shiny