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EFI Sniper |
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apannizzo
AMC Nut Joined: Jun/08/2015 Location: NY Status: Offline Points: 335 |
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Posted: May/25/2018 at 10:18am |
I have a 74 AMX with a 360 Motor. An EFI Sniper was put on Car and I noticed that the Carburetor seemed very loud. There was Rythmic Ticking going on that seemed to get worse when Car was Warm. Also the Display Screen blacks out and comes on and off Intermittently. I thought it was way to loud so my Mechanic sent it Back to Holley. They said everything was normal and could not find anything wrong and It was just a louder than normal injector. My question is, is there something my Mechanic isn’t Seeing that could lessen noise and fix Display? Just looking for feedback as I do not know what else to do!
Thanks! Edited by apannizzo - May/25/2018 at 2:35pm |
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Allan Pannizzo
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gremlinsteve
AMC Addicted Joined: Dec/16/2008 Location: houston Status: Offline Points: 884 |
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It's not wired correctly
The display should not go blank |
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Trader
AMC Addicted Joined: May/15/2018 Location: Ontario Status: Offline Points: 6881 |
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Just wondering if the two problems may be connected. A poor power supply will cause an injector to be louder and the blacking out screen seems like it may also be a power issue.
First take a look at the EFI connections. Try hooking up a digital volt meter to the power and taking it out for a drive. You should see 14.2 to 14.4 V pretty steady. May drop to 13.8 V at idle depending on your options. Engine off battery should be 13.6 V to 13.8 V settling after a run.
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bcsideshow
Supporter of TheAMCForum Joined: May/19/2010 Location: Kenosha Status: Offline Points: 1228 |
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I have a Holley Terminator EFI. Its similar. It's not quiet.
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1969 SCRambler "B"
1970 AMX 390 Auto 1968 AMX 390 Auto 1970 Rebel Machine Project 1969 AMX 390 4SPD Project 1969 AMX 390 Auto Project 1969 Javelin 390 project 1997 Cherokee lifted 1998 TJ Lifted |
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WesternRed
AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799 |
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I have the sniper as well, the injectors are quite noisy, I thought this came up recently?
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apannizzo
AMC Nut Joined: Jun/08/2015 Location: NY Status: Offline Points: 335 |
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Yes it did, by me!!! Figured I would relay the Info that Holley says this was Normal. If I knew it was this loud before I Installed, I would have passed. Thought it would be good info for the Forum and to Give my experience with it. I cannot see how anybody with a stock Engine would want to deal with this Annoying Noise. Maybe I am wrong, but I now wish I had rebuilt my stock Carburetor. Live and Learn!
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Allan Pannizzo
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69 ambassador 390
Supporter of TheAMCForum Joined: Nov/22/2009 Location: Peoria, AZ Status: Offline Points: 3539 |
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I just installed the Sniper on a customers car. It is very noisy compared to any other system I have installed. It is not true fuel injection and more similar to CFI systems from the 80's. It seems to be easy to tune but is not as sophisticated as the MSD system I usually install. The MSD has true fuel injectors on rails, the Holley has a single solenoid and annular discharge like a carb. It works OK but I prefer the less clunky and much quieter MSD. The noise you hear is normal. Every Sniper I have seen has a screen that goes dormant after a while.
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Steve Brown
Algonac, Mi. 69 Ambassador sst 390 84 Grand Wagoneer 69 Cougar XR7 65 Fairlaine 500XL 79 F-350 Super Camper Special |
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Mopar_guy
Supporter of TheAMCForum Joined: Jun/07/2009 Location: Ohio Status: Online Points: 4828 |
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I've installed and seen several FAST systems and they're almost silent. You get what you paid for I guess.
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"Hemilina" My 1973, 5.7 Hemi swapped Javelin |
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