Hey you guys, I’m having a problem with my Fd rx7. I had let my car sat for a few months and now it won’t start. It started up a few months ago, I had change the spark plugs and the oil before it sat. Trying to see what could be the problem, I try to deflood it by pulling the egi fuse and crank it a few times then put it back in and still not starting.
Going to try to add more gas in the tank and might try to put a new starter to it and see what happens. Its not the battery already try starting it with cables but no luck. All the light are on and the motor is turning but not firing up. Motor was brand new from Mazda about 5 years ago with not much miles on it.

Update so I try new plus and deflood it again no luck. Spray starter fluid in the intake and it starts up for a second.
New fuel pump relay and its getting power to that, fuse is good.
I hook up the fuel pump to direct power and it turns on, but for some reason its not turning on when I turn the key. I try to hook a empty bottle to the fuel hose and no gas to coming out.
update got a new fuel pump still no start

 

Majority of the time, it’s the safety switch for the clutch. The North America cars require you to hold down the clutch to hit the switch so it can spin the starter.
its a common thing. Chances are high it’s that since you started the car just fine a few months back..

Whenever you are putting the car to sleep for a few months (winter hibernation), I always make sure the fuel tank is topped up, I put in some stabilize addictive (on the last big fill up before putting it away) and then I don’t touch it again until I know I’ll be driving it.
Before I begin to drive it in the new season, I change the oil and the spark plugs. She always fires up. Ready for the new season.

 

Thats the first thing I check, the starter is spining and motor is trying to start

 

How much voltage is the battery showing at rest and during cranking?

 

So we know the fuel pump is new. When you cycle thru the first turn, you can hear the pump working?
If the fuel is flowing and she still doesn’t want to start, it only leaves ignition or the fuel injectors. We can kinda rule out the ignition since you said if you blow ignition fluid down, the engine wants to start.
Gotta be the fuel rail or the injectors?

 

No pump is not turning on with key turn, no prime noise either. I have a feeling my haltech ecu is not turning on the pump

 

battery was new, but has been thur some cranking. Does an bad alternator cause no voltage to pump?

 

What ECU is in the car?
Do you have fuel pumping now? It wasn't quite clear.

 

No. Wiring problem, bad connection or a blown fuse causes no voltage to the fuel pump.

Alternator only works when the car is running.

If the starter is engaging, it is working.

Post a video trying to start the car

 

Check the wiring diagrams for the fuel pump. It is a bit complicated. Any evidence of rats chewing on wires?

It seems there are three fuses that could affect the fuel pump.

Recent article I read said that the introduction of ethanol into the fuel shortens the storage life of the gas.

(Water separation?)

There seems to be a steady appearance of similar threads on this topic and I wonder if ethanol in the fuel may be causing these issues more frequently.

 

https://www.rx7club.com/3rd-generati...issue-1164492/

 

https://petroclear.com/resources/dont-be-phased.php

 

https://www.jdpower.com/cars/shoppin...m%20the%20tank

 

This is important to read and should influence how we handle our fuel systems.

As ethanol was just added to our Chevron 94 supply in August, 2023, local retail stations may not be versed in handling it well. I suspect the tank holding the 94 blend does not get drawn down as quickly, thereby allowing the fuel to sit longer. The night I filled up was one of the coldest rainiest night of the year.

 

It was a good read. Unfortunately the only things we can do about it as end users to try to mitigate the problem is: (1) Try to buy all your fuel from the same trusted gas stations that do a high volume business (meaning their storage tanks don't have much time to accumulate condensation/water between refills), and (2) Keep your gas tank full, especially if you expect your car to be sitting for any lengthy period of time (less air space in the tank means less opportunity for condensation to form inside), and (3) If you're car is being stored, use a fuel stabilizer. #4 would be to avoid ethanol blend fuels entirely, but that's not an option for me, since it seems I can't find ANY gas station in the USA that doesn't sell up to a 10% ethanol blend.

 

It’s true. Can’t find a gas station that doesn’t blend gas with ethanol nowadays.
Since I have to store the vehicle almost 5 months out of the year due to weather, I have no choice but to stick to the method mentioned above.
add fuel stabilizer at the moment you’re going to fill the tank fully before putting g the car away. Thankfully the gas station is about 2-3km’s from my place. Enough time to run the vehicle with the solution before parking her indefinitely in her bed.
I don’t move or start her until the new season. Before I even attempt to start her I make sure to change the oil and change out spark plugs. It has been my procedure for over 20yrs since I’ve owned her.
I learned early on never to start the car and let it idle during the winter months. Letting it sit and idle is the worst thing you can do to any vehicle. Especially rotaries. It was an expensive lesson to learn. But thankfully I have kept to the mentioned routine now and everything has been running smooth ever since.
I do get a kick when I do start and run her for the new season. Looks like I’m firing up a race engine when I go for the first drive. At least I know the OMP is doing its job.

Anyways, so the fuel pump isn’t even going? And you checked the fuses.. no bueno. Better start tracing wiring. It’s possible rodents have gotten in the way..

 

I've got lots of ethanol free close to me since I'm by the coast and its widely used for boating understandably but its only 89 octane when our premium is 93. I use it for my generator and lawn mower and was running it in my pathfinder for a while until the prices went crazy 3 years ago

 

I've been doing a couple of things for years, and haven't had any issues since starting to consistently do them.
1. Storing street vehicles and racecar over winter: full tank, heated garage. The combination has so far prevented excess water absorption.
2. For everything else that sits over winter in an unheated, open to ambient air, location (mower, leaf blower, portable generator, etc.) I completely as possible drain the gasoline. Nothing else seems to be consistently successful.
3. For engines that will sit for more than a month or 2, I use Marvel Mystery Oil to "pickle" the engine before storage. This prevents sticking rings or valves in piston engines and may prevent rotary engine seals from sticking.

I have not had much success using any fuel stabilizer (Stabil, etc.) including ones that say they help prevent phase separation in ethanol-containing fuels.

 

haltech ecu ps1000

no fuel pump is not pumping at all, even with key on theres no prime

 

is there a diagram of the fuel pump wiring? Kinda hard to trace without it

 

do you have a link for the diagram? I have seen a rat in the car a very long time ago. So it could be a chance

 

Some diagrams in the thread.

https://www.rx7club.com/3rd-generati...1164492/page4/