RX7Club.com - Mazda RX7 Forum - General Rotary Tech Support

Where can I get this connector

Ehaban — Sun, 17 May 2026 01:58:48 GMT

What's the part number for this connector off an FD fuel rail sensor? I need to replace mine as I'm finally getting the new fuel rails installed

Thanks in advance.

Replaced fuel filter, lots of sediment. What next?

funkyjonx — Thu, 14 May 2026 23:59:29 GMT

Hi All -

1994 RX7, I've had it since late last year. It looks like it had sat for quite some time and I've been chasing a few bugs. One issue is an occasional lean "blip" while driving. Not always when under load, but more often under boost than when cruising.

I previously tested fuel pressure at the FPR under simulated boost and the needle wasn't steady, so I went hunting for a restriction. Replaced the FPR in case that was an issue (it wasn't). Then opened the tank and the pump looked pretty crusty.

Replaced the fuel pump with a Walbro 450 (overkill, yes) and swapped out the fuel filter. The fuel filter dumped out some pretty nasty stuff.

When I saw that I drained probably almost a pint from the tank drain plug and the fuel looked clean.

How bad is this and does this mean I need to dig into the injectors and get them tested/cleaned? When I swapped out the FPR I ran the pump for a few secs and captured some fuel. I didn't notice any sediment at the time. It certainly wasn't as bad as what came out of the filter.

Oil Filter Sandwich Plate

FD96 — Fri, 08 May 2026 14:56:13 GMT

Anyone run into the issue of the filter hitting the TPS when using a sandwich plate? Please disregard the damaged filter. Just using for mock up.

Rotor Housing Freeze Plug Installation

Fletch1971 — Sun, 03 May 2026 20:39:48 GMT

As I have indicated on previous posts, I am building an all new engine for my 1990 RX-7. I am using two rear turbo housings, (T2), in this build, so I need to do something about those coolant holes. Of course, I purchased two rotor housing-to-intake manifold freeze plugs that are intended to close off those passages. Can anyone advise me on the best way to install these freeze plugs? I have installed freeze plugs in the past on a cast iron engine block and cylinder head, but considering that the rotor housing is made of aluminum, I am concerned that driving the freeze plug in with an appropriate-sized socket and hammer may deform the housing. According to Mazdatrix, these holes are 19.5 mm in diameter, while the freeze plugs are 20.5 mm in diameter; As a result, I am expecting some force to be required.

As an alternative, would it be advisable to fill these coolant holes with epoxy such as JB weld instead?

Engine compression test for 2024 RX 7

Barry Hurwitz — Tue, 28 Apr 2026 19:24:20 GMT

I have a 3rd generation RX7 bought new with about 40000 miles in running condition and I am looking to have an engine compression test done in the Baltimore area. I would appreciate advice.

I mistakenly put the incorrect model year for my RX7. What I have is a 1994 RX7 that I might want to sell after the compression test results.

FD Oil in Intercooler Piping

FD96 — Tue, 28 Apr 2026 07:41:39 GMT

96 79,000KM Doing some routine service. Plugs, wires, power steering reservoir replacement and noticed some buildup in the intercooler piping. I have recently developed a flooding issue and also noticed an oil leak from what looks to be the turbo oil return. Could just be the gasket but can�t really tell if it�s coming from higher up. What y�all think?

Buzzer going off in my fc not the add coolant buzzer

Sloshymold — Fri, 24 Apr 2026 01:20:26 GMT

So I bought an '87 FC GXL a while back, and I've been working on getting it drivable. It does drive now, but the "add coolant" buzzer was going off, and the light on the dash was on. I sorted that out a mouse chewed the wire. The light on the dash is gone, and the buzzer has changed. It was very annoying before, but now it's pretty polite, not nearly as loud, and there are no lights on the dashboard. I was wondering what would be a good place to start looking.