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Thread: Sniper Injectors Ticking

  1. #1

    Default Sniper Injectors Ticking

    Hi! I'm wondering if everything is OK with this ticking? I have 90 miles on my Sniper, but this started the last 10 miles or so: https://youtu.be/pvcifqfg4OM (Ignore the power steering pump drone.) The noise is definitely coming OUT of the throttle body. When I cover it with my hands, it gets quieter. The ticking is inline with the fuel pressure I feel squeezing both the fuel return & delivery lines (like a heartbeat). Thanks.

  2. #2
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    Check your fuel pressure (key-on/engine-off), it should be 58.5 to 60 psi.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3

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    Quote Originally Posted by Danny Cabral View Post
    Check your fuel pressure (key-on/engine-off), it should be 58.5 to 60 psi.
    What screen do I use to find psi? Base fuel flow key-on/engine-off is 20 lb/hr, and that drops to 5 while running. Here's some gauges while running:



    Last edited by schweigert; 06-18-2017 at 12:25 PM.

  4. #4
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    Quote Originally Posted by schweigert View Post
    What screen do I use to find psi?
    Use a fuel pressure gauge to check fuel pressure (LINK). You can use THIS and one of THESE fuel pressure gauges at the -6AN fuel feed line fitting.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  5. #5

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    Oh OK, got it. So no built in fuel pressure gauge on the Sniper, just a fuel regulator? I'll buy that stuff and report back. Probably hook up a permanent fuel pressure gauge inside the cabin for this then.
    I have the Spectra 22 gallon tank that came with a fuel pump. There's been reports of the interior coating on the tanks gumming up the fuel pumps. Thanks Danny, you're the best moderator I've ever seen on a forum.

  6. #6
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    Quote Originally Posted by schweigert View Post
    Oh OK, got it. So no built in fuel pressure gauge on the Sniper, just a fuel regulator?
    Correct.

    Thanks Danny, you're the best moderator I've ever seen on a forum.
    You're welcome, and thanks for the compliment.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  7. #7

    Default

    Just a quick update. So I'm buying this: https://www.holley.com/products/fuel.../parts/553-129
    And the Holley Tech on the phone says that I can hook it up to the Holley Snipers external gauge connection, and it will show me the pressure.
    So the Sniper DOES have a way to measure the fuel pressure, just that the handheld screen isn't setup to display it! I feel like they should just let me see that from the display! Oh well.

  8. #8
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    Quote Originally Posted by schweigert View Post
    So the Sniper DOES have a way to measure the fuel pressure, just that the handheld screen isn't setup to display it!
    No, it doesn't. There's no fuel pressure sensor.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  9. #9

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    Not sure, but the Holley tech says the ECU has it and can output it to the additional Holley EFI gauges.
    So I can just buy this, and hook it up with just one wire to the Sniper EFI harness.
    https://www.holley.com/products/fuel.../parts/553-129
    Honestly just might go this cheaper route, and see if in an update they let the Sniper handheld screen show the fuel pressure.
    http://www.efisystempro.com/sniper/s...-psi-100187ERL

  10. #10
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    Quote Originally Posted by schweigert View Post
    Not sure, but the Holley tech says the ECU has it and can output it to the additional Holley EFI gauges.
    No, it can't.

    So I can just buy this, and hook it up with just one wire to the Sniper EFI harness.
    https://www.holley.com/products/fuel.../parts/553-129
    I know how it works. The Sniper EFI can use Holley's EFI Analog Gauges (LINK) via the 554-130 Gauge Module.
    http://documents.holley.com/199r11031r.pdf (Sniper EFI Instruction Manual - "10-Pin Connector/Pin H/Tan wire", Page 10)
    However, the Holley EFI ECU has to have an actual fuel pressure sensor input for the Holley EFI CAN Bus gauge to display it.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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