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Thread: 1994 Pro Tech System - New Injectors

  1. #1

    Default 1994 Pro Tech System - New Injectors

    Hi. Lately, I had to change my old injectors with the new ones (Injectors RN0153A). I had to change the pod, because of size & shape. Now when everything is done and injectors working, the boat experiencing torque up & down when idling or even when running. Can you please tell me, what should I need to change for instance: (Throttle Position Sensor, I still use old one Holley 543-29) or some other parts in fuel system to make my baby work like she did before? Thanks for help.

  2. #2
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    If you only changed fuel injectors, you may have installed the wrong lb/hr size. I'd check this first.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3

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    What you mean lb/hr size? I've changed only injectors and a pod. Here's the link to the playlist on YouTube. I've recorded videos in which, I hope, is easier to understand what's wrong there. Please check it out: https://www.youtube.com/playlist?lis...yg4ToWm1ZtAQVv

  4. #4
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    Quote Originally Posted by sandro.zaal View Post
    What you mean lb/hr size? I've changed only injectors and a pod.
    I mean did you replace the four injectors with ones of the same size? Injector size is rated in lbs/hr (PPH).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  5. #5

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    I've had a communication with the sales guy from Nautiqueparts.com, who has contacted your team and they recommended what should be replaced. I've just changed injectors and a pod. All of 4 injectors were same size, but completely different from those, which I've used before.

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  6. #6
    Join Date
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    Location
    Connecticut
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    Again, what size (lb/hr) fuel injectors were the old ones, and the new ones. (I understand the injector pod upgrade & new style injectors; that's not what I'm referring to.)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  7. #7

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    Sorry, but I have no information about size of the injectors, but I have part numbers and pictures.
    An old one was Holley 250R-123AA (0907-241):
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    And the new one is RN0153A (not sure about brand):
    Click image for larger version. 

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    As I mentioned already, I purchased them from Nautiqueparts.com and also, the recommendations what to buy and how to change had been provided by them. Thanks and have a good weekend.

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