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yahrt
08-25-2022, 07:45 AM
Car passed inspection yesterday and I went for my first real road test. 347 BP with a Sniper EFI controlling the fuel pump. After a couple of miles I arrived at a stop sign and it stopped running. Tried to start and the fuel pump was not running. Pushed the car to the side of the road, after about 5 minutes tried to start again and it fired right up. Drove for a few more minutes and it happened again. Same issue, fuel pump not running. This time waiting didn't work, loaded car onto a trailer to get it back home. Still no fuel pump when I arrived home. This morning it worked fine. Any thoughts? Thanks, Tim

Jim1855
08-25-2022, 09:27 AM
How is it wired? Pumps need current and skinny wires don't supply it well.
There's way more to it than that. I run a mechanical, so I fail on all of the particulars.
Jim

Blitzboy54
08-25-2022, 09:35 AM
Can you share details about your setup?

1. Sniper Relay or RF
2. In tank or external
3. Where is your inertia switch on your setup.

narly1
08-25-2022, 09:42 AM
I'm a big fan of troubleshooting by substitution in many cases. You've got 3 major components to look at here, the Sniper EFI, the wiring (which likely also includes a fuel pump relay) and the pump itself.

After looking at the wiring to make sure everything checks out there, it would be trivial to run a fused/switched wire back to the fuel pump. If it works fine like that then you know the pump is OK.

From there you could use the same temporary wire to energize the wiring in the car to eliminate that.

So if the pump and wiring are good than the only thing left to look at would be the EFI.

That being said my money would be on the wiring/fuel pump relay.

Earl

yahrt
08-25-2022, 10:27 AM
Can you share details about your setup?

1. Sniper Relay or RF
I am using the Sniper relay
2. In tank or external
In tank from breeze
3. Where is your inertia switch on your setup.
In the typical Ron Francis configuration

Jhinkemeyer
08-25-2022, 10:36 AM
If that breeze pump uses the OEM style fuel pump connection those can be a little sketchy. I though I had mind pushed on, but it wasn't REALLY pushed on correctly and could pop/off loose quite easily. Eventually I got it seated well and it has been fine, but it wasn't the most foolproof electrical connection I've ever encountered.

yahrt
08-25-2022, 11:12 AM
Yes I had that same issue during go carting, ended up drilling a few holes in in the male and female parts of the plastic connector and securing with a few zip ties. I do plan to examine that tonight but don't expect that to be be the issue.

yahrt
08-25-2022, 06:38 PM
Ok, the problem was simple, plug to fuel pump not seated all of the way, despite my zip tie approach, what else have other done, a dab of silocone or RTV?