RX7 S3 Resto in N.Ireland
- Lunawolf044
- Posts: 19
- Joined: Mon Apr 13, 2015 11:17 pm
Re: RX7 S3 Resto in N.Ireland
So update... So found out definitely dead fuel pump just how to change it as looks like whole fuel tank has to go out but I'm not sure, radio wiring is a mess so have to fix it, a/c unit does nothing so needs looked at and the rust is stopped and cleaned up so just needs welded now then after all that it's time to get ready for mot oh great lol hold up has been fixing another project and also looking after daily so yea getting back to her now to hopefully get done.
“The important thing is to keep trying”-Keiichi Tsuchiya
Car List:
1985 Mazda RX7 S3-Rexy (viewtopic.php?f=3&t=3796)
1992 Subaru Legacy 1.8 GL-Big Lady mine now
2007 Mazda 2 TS2-Daily
Car List:
1985 Mazda RX7 S3-Rexy (viewtopic.php?f=3&t=3796)
1992 Subaru Legacy 1.8 GL-Big Lady mine now
2007 Mazda 2 TS2-Daily
-
- VIP User
- Posts: 2268
- Joined: Sat Nov 05, 2011 8:07 pm
- Location: Feltham, Southwest London
- Has thanked: 482 times
- Been thanked: 192 times
Re: RX7 S3 Resto in N.Ireland
Remove the cover with the two holes in and you'll find the fuel pump. (You can see the fuel filter thru the holes).


1985 Sunrise Red S3 TWR
2006 Mercedes CLK 280 Sport AMG
2006 Mercedes CLK 280 Sport AMG
- Casey
- Admin
- Posts: 1322
- Joined: Sat May 07, 2011 5:46 pm
- Location: Colchester, UK
- Has thanked: 505 times
- Been thanked: 451 times
Re: RX7 S3 Resto in N.Ireland
Good to hear this is still progressing Corey.
As has been said, getting to the fuel pump is dead easy.
Before you take that step, I assume you have you checked the electrics first to confirm a dead pump?
There is a 20A fuse to check under the dash that feeds the ignition and pump.
If the fuse is OK, you might want to see if there is power getting to the pump. Under the rear seat, passenger side, you'll find two pin connector feeding power to the pump. Break the connector and check with a multimeter. With ignition on, you should get 12 volts there.
When the pump is working, it makes an audible ticking, which can be easily heard in the cockpit with the ignition on, so you'll know if it's operating.
If power is OK and no sound, then it's likely the pump.
Apologies if you've already done the above steps
As has been said, getting to the fuel pump is dead easy.
Before you take that step, I assume you have you checked the electrics first to confirm a dead pump?
There is a 20A fuse to check under the dash that feeds the ignition and pump.
If the fuse is OK, you might want to see if there is power getting to the pump. Under the rear seat, passenger side, you'll find two pin connector feeding power to the pump. Break the connector and check with a multimeter. With ignition on, you should get 12 volts there.
When the pump is working, it makes an audible ticking, which can be easily heard in the cockpit with the ignition on, so you'll know if it's operating.
If power is OK and no sound, then it's likely the pump.
Apologies if you've already done the above steps

KIMI 1 : 1st Gen, "hybrid" 1983 silver S2 running gear in a 1985 S3 shell, SORN'd, long term resto project
KIMI 2 : 1st Gen, 1983 silver S2 - now sold to Ian Mothersole on here.
KIMI 3 : 1st Gen, 1983 red S3
Plus a 2004 Full Bridgeported RX-8
KIMI 2 : 1st Gen, 1983 silver S2 - now sold to Ian Mothersole on here.
KIMI 3 : 1st Gen, 1983 red S3
Plus a 2004 Full Bridgeported RX-8