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Author Topic: 19# injector problem  (Read 1530 times)

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batman13

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19# injector problem
« on: January 25, 2010, 12:42:15 PM »
well im sure you guys have heard all the problems, but i couldnt find mine with the search
i got a set of ford 19# injectors, they work great, until i tighten the fuel rail down, then they leak from the top

my initial idea is that maybe i need a washer or 2 under the rail to keep it from getting all the way tight, but i'm gonna see what you guys have to offer first

its a 97 2.5l if the year makes a difference
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Offline sharpxmen

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Re: 19# injector problem
« Reply #1 on: January 25, 2010, 01:54:05 PM »
Quote from: batman13 on January 25, 2010, 12:42:15 PM
well im sure you guys have heard all the problems, but i couldnt find mine with the search
i got a set of ford 19# injectors, they work great, until i tighten the fuel rail down, then they leak from the top

my initial idea is that maybe i need a washer or 2 under the rail to keep it from getting all the way tight, but i'm gonna see what you guys have to offer first

its a 97 2.5l if the year makes a difference

it does make a difference: 19# injectors are the wrong size for your motor, you need bigger ones - don't drive it with these on. These injectors are fine for the 91-95 mpfi engines.

EDIT: when i say bigger I mean more fuel flow and not the physical dimensions, you will end up with your mixture too lean. 19 is the flow in lb/hr, your engine's PCM requires 23.2lb/hr at 49psi.
« Last Edit: January 25, 2010, 01:58:29 PM by sharpxmen »
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'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
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batman13

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Re: 19# injector problem
« Reply #2 on: January 25, 2010, 02:11:05 PM »
ok, what engines am i gonna find the higher psi injectors
im already running too lean with the stockers
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Offline sharpxmen

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Re: 19# injector problem
« Reply #3 on: January 25, 2010, 02:34:55 PM »
Quote from: batman13 on January 25, 2010, 02:11:05 PM
ok, what engines am i gonna find the higher psi injectors
im already running too lean with the stockers

dunno on top of my head but there have been a few threads regarding this with the appropriate P/N info. You need to look for an injector that will flow close to what you need at 49psi - make sure you figure out the flow based on the specs as they are rated at different pressure (some are at 43.5, some at 39) - there was another member (mystangt or something like that) found some ford injectors that were close to the required flow, so do a search for his posts related to injectors and give that a read.
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'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
Latest: Corbeau BajaRS heated seats :dance: keeping warm the rear end

batman13

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Re: 19# injector problem
« Reply #4 on: January 25, 2010, 02:38:16 PM »
will do that thanks,
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melbill

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Re: 19# injector problem
« Reply #5 on: January 25, 2010, 04:42:11 PM »
There is the link to the FAQ section that explains all about the different injectors for different Jeeps. Jeffy and others collaborated on a great write up.

Bill
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batman13

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Re: 19# injector problem
« Reply #6 on: January 25, 2010, 05:53:18 PM »
ok found it, the 24#s out of a ford truck...

been a long time since ive seen a write up that in depth
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Offline sharpxmen

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Re: 19# injector problem
« Reply #7 on: January 26, 2010, 10:45:28 AM »
Quote from: batman13 on January 25, 2010, 05:53:18 PM
ok found it, the 24#s out of a ford truck...

been a long time since ive seen a write up that in depth

send a PM to mystang (he's also got his email in one of the Garage Sales ads) and ask him about the injectors he found - they were like $35 or so and from what i remember were slightly higher flow than stockers - he didn't buy them as he got a set of OEMs so he might hook you up with the person that had them for sale - if you get them and install them make sure you report back here with results :)
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'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
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Offline bootguy

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Re: 19# injector problem
« Reply #8 on: February 07, 2010, 08:41:25 PM »
Let me know what you are going to do with the Injectors, I have been looking to do this mod here shortly.
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1994 Jeep Wrangler, 2.5L, automatic, 2.5" lift, 4:88 gearing, 33" tires, 2.5" exhaust from manifold back, air restrictor removed.

batman13

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Re: 19# injector problem
« Reply #9 on: February 08, 2010, 02:28:23 PM »
Quote from: bootguy on February 07, 2010, 08:41:25 PM
Let me know what you are going to do with the Injectors, I have been looking to do this mod here shortly.
they're up fer sale to whoever wants them
i got the set of 8 but there are 2 or 3 that are missing parts, like o rings, the rubber tips around the nozzle
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